./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:40:57,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:40:57,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:40:57,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:40:57,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:40:57,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:40:57,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:40:57,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:40:57,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:40:57,755 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:40:57,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:40:57,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:40:57,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:40:57,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:40:57,758 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:40:57,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:40:57,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:40:57,758 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:40:57,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:40:57,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:40:57,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:40:57,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:40:57,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:40:57,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:40:57,760 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:40:57,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:40:57,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:40:57,761 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:40:57,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:40:57,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:40:57,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:40:57,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:40:57,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:40:57,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:40:57,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:40:57,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:40:57,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:40:57,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:40:57,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:40:57,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:40:57,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:40:57,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:40:57,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:40:57,768 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:40:58,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:40:58,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:40:58,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:40:58,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:40:58,068 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:40:58,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:40:59,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:40:59,546 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:40:59,547 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:40:59,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723f7bf13/c8eef80348904972907b405607d04918/FLAG98174fde3 [2024-06-27 20:40:59,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723f7bf13/c8eef80348904972907b405607d04918 [2024-06-27 20:40:59,576 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:40:59,576 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:40:59,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 20:40:59,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:40:59,704 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:40:59,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:40:59,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:40:59,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:40:59,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:40:59" (1/2) ... [2024-06-27 20:40:59,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1288e3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:40:59, skipping insertion in model container [2024-06-27 20:40:59,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:40:59" (1/2) ... [2024-06-27 20:40:59,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@678a2183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:40:59, skipping insertion in model container [2024-06-27 20:40:59,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:59" (2/2) ... [2024-06-27 20:40:59,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1288e3ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:59, skipping insertion in model container [2024-06-27 20:40:59,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:59" (2/2) ... [2024-06-27 20:40:59,717 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:40:59,777 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:40:59,778 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-27 20:40:59,778 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-27 20:40:59,778 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:40:59,778 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-27 20:40:59,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:41:00,218 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:41:00,229 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:41:00,338 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:41:00,369 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:41:00,370 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00 WrapperNode [2024-06-27 20:41:00,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:41:00,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:41:00,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:41:00,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:41:00,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,433 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-27 20:41:00,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:41:00,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:41:00,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:41:00,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:41:00,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,482 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 20:41:00,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:41:00,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:41:00,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:41:00,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:41:00,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (1/1) ... [2024-06-27 20:41:00,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:41:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:41:00,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 20:41:00,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 20:41:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:41:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:41:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:41:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:41:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:41:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:41:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:41:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:41:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:41:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:41:00,579 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 20:41:00,714 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:41:00,717 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:41:01,053 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:41:01,058 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:41:01,228 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:41:01,228 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:41:01,231 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:41:01 BoogieIcfgContainer [2024-06-27 20:41:01,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:41:01,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:41:01,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:41:01,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:41:01,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:40:59" (1/4) ... [2024-06-27 20:41:01,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a476988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:41:01, skipping insertion in model container [2024-06-27 20:41:01,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:59" (2/4) ... [2024-06-27 20:41:01,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a476988 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:41:01, skipping insertion in model container [2024-06-27 20:41:01,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:00" (3/4) ... [2024-06-27 20:41:01,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a476988 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:41:01, skipping insertion in model container [2024-06-27 20:41:01,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:41:01" (4/4) ... [2024-06-27 20:41:01,246 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:41:01,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:41:01,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:41:01,262 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:41:01,315 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:41:01,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:41:01,392 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 20:41:01,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:41:01,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:41:01,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:41:01,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 20:41:01,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:41:01,415 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30333562, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:41:01,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:41:01,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:41:01,421 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:41:01,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:41:01,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:01,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:41:01,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:01,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-27 20:41:01,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:01,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575578924] [2024-06-27 20:41:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:01,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:02,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575578924] [2024-06-27 20:41:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575578924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:02,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:41:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533912532] [2024-06-27 20:41:02,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:41:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:02,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:41:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:41:02,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:41:02,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:02,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:02,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:41:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:02,858 INFO L124 PetriNetUnfolderBase]: 162/320 cut-off events. [2024-06-27 20:41:02,858 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 20:41:02,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 320 events. 162/320 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1209 event pairs, 97 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 620. Up to 288 conditions per place. [2024-06-27 20:41:02,865 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 20:41:02,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-27 20:41:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:41:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:41:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-27 20:41:02,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-27 20:41:02,879 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-27 20:41:02,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-27 20:41:02,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:41:02,884 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 20:41:02,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 20:41:02,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 20:41:02,889 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 20:41:02,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:02,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:02,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:02,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:41:02,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:02,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-27 20:41:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550216104] [2024-06-27 20:41:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550216104] [2024-06-27 20:41:03,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550216104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:41:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357859130] [2024-06-27 20:41:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:41:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:41:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:41:03,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 20:41:03,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:03,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:03,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 20:41:03,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:03,925 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-27 20:41:03,925 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-27 20:41:03,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1262 event pairs, 94 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-27 20:41:03,932 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 20:41:03,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-27 20:41:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:41:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:41:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-27 20:41:03,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-27 20:41:03,936 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-27 20:41:03,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-27 20:41:03,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:41:03,941 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 20:41:03,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 20:41:03,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 20:41:03,942 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 20:41:03,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:03,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:03,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:41:03,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:03,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-27 20:41:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:03,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045790925] [2024-06-27 20:41:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045790925] [2024-06-27 20:41:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045790925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:04,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:41:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144826745] [2024-06-27 20:41:04,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:04,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:41:04,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:41:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:41:05,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 20:41:05,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:05,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:05,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 20:41:05,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:05,128 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-27 20:41:05,128 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-27 20:41:05,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1230 event pairs, 52 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-27 20:41:05,130 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 20:41:05,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-27 20:41:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:41:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:41:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-27 20:41:05,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-27 20:41:05,133 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-27 20:41:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-27 20:41:05,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:41:05,135 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-27 20:41:05,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-27 20:41:05,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-27 20:41:05,136 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-27 20:41:05,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:05,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:05,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:41:05,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:05,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-27 20:41:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564656378] [2024-06-27 20:41:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:06,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564656378] [2024-06-27 20:41:06,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564656378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849635724] [2024-06-27 20:41:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:06,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:06,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 20:41:06,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:06,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:06,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 20:41:06,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:06,821 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-27 20:41:06,821 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-06-27 20:41:06,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1159 event pairs, 30 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-27 20:41:06,824 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 20:41:06,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-27 20:41:06,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-27 20:41:06,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-27 20:41:06,826 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-27 20:41:06,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-27 20:41:06,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:06,828 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-27 20:41:06,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-27 20:41:06,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 20:41:06,830 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-27 20:41:06,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:06,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:06,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:06,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:41:06,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-27 20:41:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267615958] [2024-06-27 20:41:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267615958] [2024-06-27 20:41:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267615958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:07,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:41:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111322063] [2024-06-27 20:41:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:41:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:41:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:41:07,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:41:07,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:07,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:07,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:41:07,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:07,536 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2024-06-27 20:41:07,537 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-27 20:41:07,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 294 events. 147/294 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1061 event pairs, 53 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-27 20:41:07,539 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-27 20:41:07,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 196 flow [2024-06-27 20:41:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:41:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:41:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-06-27 20:41:07,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 20:41:07,541 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 63 transitions. [2024-06-27 20:41:07,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 196 flow [2024-06-27 20:41:07,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 176 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:07,547 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-27 20:41:07,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-27 20:41:07,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-27 20:41:07,551 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-27 20:41:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:07,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:07,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:07,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:41:07,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:07,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash 29843198, now seen corresponding path program 1 times [2024-06-27 20:41:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:07,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299158394] [2024-06-27 20:41:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299158394] [2024-06-27 20:41:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299158394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680830449] [2024-06-27 20:41:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:08,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:08,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:08,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:08,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:08,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:08,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:08,381 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-27 20:41:08,382 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-06-27 20:41:08,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 329 events. 172/329 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 64 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 953. Up to 298 conditions per place. [2024-06-27 20:41:08,384 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-27 20:41:08,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 215 flow [2024-06-27 20:41:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-27 20:41:08,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:41:08,386 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 68 transitions. [2024-06-27 20:41:08,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 215 flow [2024-06-27 20:41:08,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:08,388 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-27 20:41:08,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-27 20:41:08,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-27 20:41:08,389 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-27 20:41:08,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:08,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:08,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:08,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:41:08,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:08,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:08,390 INFO L85 PathProgramCache]: Analyzing trace with hash 697773711, now seen corresponding path program 1 times [2024-06-27 20:41:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598355004] [2024-06-27 20:41:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:08,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598355004] [2024-06-27 20:41:08,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598355004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:08,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:08,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533481910] [2024-06-27 20:41:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:08,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:08,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:09,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:09,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:09,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:09,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:09,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:09,212 INFO L124 PetriNetUnfolderBase]: 188/348 cut-off events. [2024-06-27 20:41:09,213 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-27 20:41:09,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 348 events. 188/348 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1221 event pairs, 71 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1111. Up to 311 conditions per place. [2024-06-27 20:41:09,216 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 20:41:09,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 253 flow [2024-06-27 20:41:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 20:41:09,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 20:41:09,217 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 71 transitions. [2024-06-27 20:41:09,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 253 flow [2024-06-27 20:41:09,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 236 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:09,220 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-27 20:41:09,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-27 20:41:09,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 20:41:09,221 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-27 20:41:09,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:09,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:09,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:09,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:41:09,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:09,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash 703487631, now seen corresponding path program 2 times [2024-06-27 20:41:09,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685903775] [2024-06-27 20:41:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:09,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:09,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:09,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685903775] [2024-06-27 20:41:09,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685903775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:09,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900181321] [2024-06-27 20:41:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:09,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:09,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:09,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:09,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:09,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:10,112 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-27 20:41:10,112 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2024-06-27 20:41:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 346 events. 186/346 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1220 event pairs, 72 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1174. Up to 302 conditions per place. [2024-06-27 20:41:10,115 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 27 selfloop transitions, 13 changer transitions 0/44 dead transitions. [2024-06-27 20:41:10,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 283 flow [2024-06-27 20:41:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 20:41:10,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-27 20:41:10,116 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 7 states and 78 transitions. [2024-06-27 20:41:10,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 283 flow [2024-06-27 20:41:10,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 262 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:10,119 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 204 flow [2024-06-27 20:41:10,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-27 20:41:10,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-27 20:41:10,120 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 204 flow [2024-06-27 20:41:10,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:10,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:10,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:10,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:41:10,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-27 20:41:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844367781] [2024-06-27 20:41:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844367781] [2024-06-27 20:41:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844367781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:10,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858242575] [2024-06-27 20:41:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:10,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:10,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:10,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:10,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:10,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:11,141 INFO L124 PetriNetUnfolderBase]: 171/326 cut-off events. [2024-06-27 20:41:11,142 INFO L125 PetriNetUnfolderBase]: For 1269/1269 co-relation queries the response was YES. [2024-06-27 20:41:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 326 events. 171/326 cut-off events. For 1269/1269 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1162 event pairs, 101 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1147. Up to 294 conditions per place. [2024-06-27 20:41:11,144 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 33 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2024-06-27 20:41:11,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 329 flow [2024-06-27 20:41:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:41:11,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:41:11,146 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 204 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:41:11,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 329 flow [2024-06-27 20:41:11,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 305 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:11,149 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 239 flow [2024-06-27 20:41:11,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-06-27 20:41:11,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-27 20:41:11,150 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 239 flow [2024-06-27 20:41:11,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:11,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:11,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:11,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:41:11,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:11,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:11,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1399700031, now seen corresponding path program 1 times [2024-06-27 20:41:11,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926078573] [2024-06-27 20:41:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:11,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926078573] [2024-06-27 20:41:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926078573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917633617] [2024-06-27 20:41:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:11,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:11,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:11,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:11,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:11,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:12,017 INFO L124 PetriNetUnfolderBase]: 191/357 cut-off events. [2024-06-27 20:41:12,018 INFO L125 PetriNetUnfolderBase]: For 1918/1919 co-relation queries the response was YES. [2024-06-27 20:41:12,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 357 events. 191/357 cut-off events. For 1918/1919 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1279 event pairs, 53 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1338. Up to 292 conditions per place. [2024-06-27 20:41:12,020 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-06-27 20:41:12,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 423 flow [2024-06-27 20:41:12,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 20:41:12,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 20:41:12,022 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 239 flow. Second operand 8 states and 95 transitions. [2024-06-27 20:41:12,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 423 flow [2024-06-27 20:41:12,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 398 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:12,027 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 299 flow [2024-06-27 20:41:12,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=299, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-06-27 20:41:12,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-27 20:41:12,031 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 299 flow [2024-06-27 20:41:12,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:12,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:12,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:12,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:41:12,032 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:12,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:12,033 INFO L85 PathProgramCache]: Analyzing trace with hash 898968699, now seen corresponding path program 2 times [2024-06-27 20:41:12,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81943583] [2024-06-27 20:41:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81943583] [2024-06-27 20:41:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81943583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:12,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:12,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77773551] [2024-06-27 20:41:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:12,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:12,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:12,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:12,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:12,927 INFO L124 PetriNetUnfolderBase]: 210/390 cut-off events. [2024-06-27 20:41:12,927 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2024-06-27 20:41:12,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 390 events. 210/390 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1421 event pairs, 50 based on Foata normal form. 2/392 useless extension candidates. Maximal degree in co-relation 1615. Up to 312 conditions per place. [2024-06-27 20:41:12,930 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 45 selfloop transitions, 21 changer transitions 0/70 dead transitions. [2024-06-27 20:41:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 534 flow [2024-06-27 20:41:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 20:41:12,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:41:12,932 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 299 flow. Second operand 8 states and 96 transitions. [2024-06-27 20:41:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 534 flow [2024-06-27 20:41:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 506 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:12,936 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 416 flow [2024-06-27 20:41:12,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=416, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-27 20:41:12,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-27 20:41:12,938 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 416 flow [2024-06-27 20:41:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:12,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:12,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:12,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:41:12,939 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:12,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash 899088855, now seen corresponding path program 1 times [2024-06-27 20:41:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:12,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308658485] [2024-06-27 20:41:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:13,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:13,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308658485] [2024-06-27 20:41:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308658485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:13,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572884114] [2024-06-27 20:41:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:13,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:13,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:13,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 416 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:13,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:13,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:13,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:13,881 INFO L124 PetriNetUnfolderBase]: 230/416 cut-off events. [2024-06-27 20:41:13,882 INFO L125 PetriNetUnfolderBase]: For 2953/2953 co-relation queries the response was YES. [2024-06-27 20:41:13,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 416 events. 230/416 cut-off events. For 2953/2953 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1503 event pairs, 82 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1826. Up to 386 conditions per place. [2024-06-27 20:41:13,885 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-06-27 20:41:13,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 602 flow [2024-06-27 20:41:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-27 20:41:13,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-27 20:41:13,887 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 416 flow. Second operand 8 states and 83 transitions. [2024-06-27 20:41:13,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 602 flow [2024-06-27 20:41:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 72 transitions, 567 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:13,893 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 447 flow [2024-06-27 20:41:13,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-06-27 20:41:13,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-27 20:41:13,894 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 447 flow [2024-06-27 20:41:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:13,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:13,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:13,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:41:13,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:13,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash 906238509, now seen corresponding path program 3 times [2024-06-27 20:41:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814706029] [2024-06-27 20:41:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814706029] [2024-06-27 20:41:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814706029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:14,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:14,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328783038] [2024-06-27 20:41:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:14,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:14,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:14,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:14,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:14,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:14,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:14,790 INFO L124 PetriNetUnfolderBase]: 229/420 cut-off events. [2024-06-27 20:41:14,791 INFO L125 PetriNetUnfolderBase]: For 3645/3645 co-relation queries the response was YES. [2024-06-27 20:41:14,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 420 events. 229/420 cut-off events. For 3645/3645 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1541 event pairs, 50 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1931. Up to 321 conditions per place. [2024-06-27 20:41:14,794 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 27 changer transitions 0/79 dead transitions. [2024-06-27 20:41:14,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 699 flow [2024-06-27 20:41:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 20:41:14,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 20:41:14,796 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 447 flow. Second operand 8 states and 98 transitions. [2024-06-27 20:41:14,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 699 flow [2024-06-27 20:41:14,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 658 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:14,805 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 509 flow [2024-06-27 20:41:14,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-06-27 20:41:14,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-27 20:41:14,806 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 509 flow [2024-06-27 20:41:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:14,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:14,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:14,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:41:14,807 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:14,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 326847593, now seen corresponding path program 4 times [2024-06-27 20:41:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:14,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21564971] [2024-06-27 20:41:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:14,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:15,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:15,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21564971] [2024-06-27 20:41:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21564971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:15,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766609000] [2024-06-27 20:41:15,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:15,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:15,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:15,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 509 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:15,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:15,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:15,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:15,644 INFO L124 PetriNetUnfolderBase]: 236/431 cut-off events. [2024-06-27 20:41:15,645 INFO L125 PetriNetUnfolderBase]: For 4380/4381 co-relation queries the response was YES. [2024-06-27 20:41:15,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2124 conditions, 431 events. 236/431 cut-off events. For 4380/4381 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1613 event pairs, 53 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2090. Up to 340 conditions per place. [2024-06-27 20:41:15,648 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-27 20:41:15,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 713 flow [2024-06-27 20:41:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 20:41:15,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 20:41:15,650 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 509 flow. Second operand 7 states and 85 transitions. [2024-06-27 20:41:15,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 713 flow [2024-06-27 20:41:15,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 674 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:15,656 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 561 flow [2024-06-27 20:41:15,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-06-27 20:41:15,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-27 20:41:15,657 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 561 flow [2024-06-27 20:41:15,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:15,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:15,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:15,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:41:15,658 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:15,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash 326852429, now seen corresponding path program 2 times [2024-06-27 20:41:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111253469] [2024-06-27 20:41:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111253469] [2024-06-27 20:41:16,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111253469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:16,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:16,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587812873] [2024-06-27 20:41:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:16,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:16,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 561 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:16,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:16,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:16,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:16,562 INFO L124 PetriNetUnfolderBase]: 250/449 cut-off events. [2024-06-27 20:41:16,562 INFO L125 PetriNetUnfolderBase]: For 4843/4843 co-relation queries the response was YES. [2024-06-27 20:41:16,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 449 events. 250/449 cut-off events. For 4843/4843 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1656 event pairs, 82 based on Foata normal form. 1/450 useless extension candidates. Maximal degree in co-relation 2276. Up to 413 conditions per place. [2024-06-27 20:41:16,566 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 58 selfloop transitions, 18 changer transitions 0/78 dead transitions. [2024-06-27 20:41:16,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 749 flow [2024-06-27 20:41:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 20:41:16,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-27 20:41:16,567 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 561 flow. Second operand 7 states and 74 transitions. [2024-06-27 20:41:16,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 749 flow [2024-06-27 20:41:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 698 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:16,576 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 574 flow [2024-06-27 20:41:16,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=574, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2024-06-27 20:41:16,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-27 20:41:16,577 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 574 flow [2024-06-27 20:41:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:16,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:16,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:41:16,577 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:16,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 10615389, now seen corresponding path program 5 times [2024-06-27 20:41:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907749666] [2024-06-27 20:41:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907749666] [2024-06-27 20:41:17,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907749666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:17,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:17,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:17,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091328797] [2024-06-27 20:41:17,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:17,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:17,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 574 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:17,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:17,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:17,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:17,451 INFO L124 PetriNetUnfolderBase]: 249/453 cut-off events. [2024-06-27 20:41:17,451 INFO L125 PetriNetUnfolderBase]: For 5758/5758 co-relation queries the response was YES. [2024-06-27 20:41:17,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 453 events. 249/453 cut-off events. For 5758/5758 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1692 event pairs, 51 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2384. Up to 333 conditions per place. [2024-06-27 20:41:17,455 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 32 changer transitions 0/85 dead transitions. [2024-06-27 20:41:17,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 852 flow [2024-06-27 20:41:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 20:41:17,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-27 20:41:17,458 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 574 flow. Second operand 7 states and 86 transitions. [2024-06-27 20:41:17,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 852 flow [2024-06-27 20:41:17,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 806 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:17,465 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 662 flow [2024-06-27 20:41:17,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-06-27 20:41:17,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-27 20:41:17,466 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 662 flow [2024-06-27 20:41:17,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:17,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:17,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:17,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:41:17,467 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:17,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1385656833, now seen corresponding path program 3 times [2024-06-27 20:41:17,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:17,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488233770] [2024-06-27 20:41:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:17,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:18,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488233770] [2024-06-27 20:41:18,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488233770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:18,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638096644] [2024-06-27 20:41:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:18,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:18,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:18,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 662 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:18,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:18,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:18,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:18,362 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-27 20:41:18,363 INFO L125 PetriNetUnfolderBase]: For 5974/5974 co-relation queries the response was YES. [2024-06-27 20:41:18,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 472 events. 264/472 cut-off events. For 5974/5974 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1755 event pairs, 86 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2519. Up to 420 conditions per place. [2024-06-27 20:41:18,367 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2024-06-27 20:41:18,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 906 flow [2024-06-27 20:41:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-27 20:41:18,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35023041474654376 [2024-06-27 20:41:18,368 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 662 flow. Second operand 7 states and 76 transitions. [2024-06-27 20:41:18,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 906 flow [2024-06-27 20:41:18,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 858 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:18,379 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 703 flow [2024-06-27 20:41:18,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-06-27 20:41:18,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-27 20:41:18,380 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 703 flow [2024-06-27 20:41:18,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:18,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:18,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:18,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:41:18,381 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:18,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 160791443, now seen corresponding path program 6 times [2024-06-27 20:41:18,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:18,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134942097] [2024-06-27 20:41:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:19,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134942097] [2024-06-27 20:41:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134942097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:19,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473667990] [2024-06-27 20:41:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:19,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:19,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:19,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 703 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:19,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:19,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:19,276 INFO L124 PetriNetUnfolderBase]: 247/452 cut-off events. [2024-06-27 20:41:19,277 INFO L125 PetriNetUnfolderBase]: For 5634/5634 co-relation queries the response was YES. [2024-06-27 20:41:19,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 452 events. 247/452 cut-off events. For 5634/5634 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1712 event pairs, 58 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 2393. Up to 317 conditions per place. [2024-06-27 20:41:19,281 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 34 changer transitions 0/89 dead transitions. [2024-06-27 20:41:19,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 951 flow [2024-06-27 20:41:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 20:41:19,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 20:41:19,282 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 703 flow. Second operand 7 states and 85 transitions. [2024-06-27 20:41:19,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 951 flow [2024-06-27 20:41:19,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 918 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:19,294 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 775 flow [2024-06-27 20:41:19,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=775, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-06-27 20:41:19,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-27 20:41:19,295 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 775 flow [2024-06-27 20:41:19,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:19,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:19,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:41:19,296 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:19,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1385419683, now seen corresponding path program 4 times [2024-06-27 20:41:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187804171] [2024-06-27 20:41:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:19,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187804171] [2024-06-27 20:41:19,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187804171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:19,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615976477] [2024-06-27 20:41:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:19,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:20,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:20,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 775 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:20,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:20,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:20,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:20,196 INFO L124 PetriNetUnfolderBase]: 258/464 cut-off events. [2024-06-27 20:41:20,197 INFO L125 PetriNetUnfolderBase]: For 6190/6190 co-relation queries the response was YES. [2024-06-27 20:41:20,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2602 conditions, 464 events. 258/464 cut-off events. For 6190/6190 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1739 event pairs, 85 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 2561. Up to 412 conditions per place. [2024-06-27 20:41:20,201 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2024-06-27 20:41:20,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 86 transitions, 957 flow [2024-06-27 20:41:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 20:41:20,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-27 20:41:20,205 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 775 flow. Second operand 7 states and 74 transitions. [2024-06-27 20:41:20,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 86 transitions, 957 flow [2024-06-27 20:41:20,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 858 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:20,218 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 731 flow [2024-06-27 20:41:20,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=731, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 20:41:20,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-27 20:41:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 731 flow [2024-06-27 20:41:20,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:20,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:20,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:20,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:41:20,220 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash -321809998, now seen corresponding path program 1 times [2024-06-27 20:41:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:20,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464497255] [2024-06-27 20:41:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:20,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:21,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464497255] [2024-06-27 20:41:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464497255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:21,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:21,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:21,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185986579] [2024-06-27 20:41:21,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:21,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:21,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:21,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:21,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:21,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:21,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:21,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:21,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:21,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:21,481 INFO L124 PetriNetUnfolderBase]: 255/465 cut-off events. [2024-06-27 20:41:21,481 INFO L125 PetriNetUnfolderBase]: For 6847/6849 co-relation queries the response was YES. [2024-06-27 20:41:21,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 465 events. 255/465 cut-off events. For 6847/6849 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1803 event pairs, 70 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2558. Up to 377 conditions per place. [2024-06-27 20:41:21,485 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-06-27 20:41:21,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 993 flow [2024-06-27 20:41:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 20:41:21,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:41:21,488 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 731 flow. Second operand 8 states and 96 transitions. [2024-06-27 20:41:21,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 993 flow [2024-06-27 20:41:21,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 938 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:21,499 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 784 flow [2024-06-27 20:41:21,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-06-27 20:41:21,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-27 20:41:21,500 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 784 flow [2024-06-27 20:41:21,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:21,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:21,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:21,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:41:21,501 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:21,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 441038739, now seen corresponding path program 1 times [2024-06-27 20:41:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317455654] [2024-06-27 20:41:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:22,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317455654] [2024-06-27 20:41:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317455654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:22,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:22,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479160891] [2024-06-27 20:41:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:22,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:22,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:22,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:22,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:22,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:22,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:22,486 INFO L124 PetriNetUnfolderBase]: 271/483 cut-off events. [2024-06-27 20:41:22,486 INFO L125 PetriNetUnfolderBase]: For 7266/7266 co-relation queries the response was YES. [2024-06-27 20:41:22,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 483 events. 271/483 cut-off events. For 7266/7266 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1826 event pairs, 55 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2686. Up to 412 conditions per place. [2024-06-27 20:41:22,491 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 27 changer transitions 0/101 dead transitions. [2024-06-27 20:41:22,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 1050 flow [2024-06-27 20:41:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:41:22,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:41:22,492 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 784 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:41:22,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 1050 flow [2024-06-27 20:41:22,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 996 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:22,503 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 815 flow [2024-06-27 20:41:22,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=815, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-06-27 20:41:22,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-27 20:41:22,504 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 815 flow [2024-06-27 20:41:22,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:22,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:22,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:41:22,505 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:22,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:22,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2081539160, now seen corresponding path program 2 times [2024-06-27 20:41:22,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:22,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686475548] [2024-06-27 20:41:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:23,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686475548] [2024-06-27 20:41:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686475548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:23,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:23,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:23,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173682458] [2024-06-27 20:41:23,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:23,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:23,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 815 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:23,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:23,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:23,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:23,762 INFO L124 PetriNetUnfolderBase]: 259/470 cut-off events. [2024-06-27 20:41:23,762 INFO L125 PetriNetUnfolderBase]: For 7827/7827 co-relation queries the response was YES. [2024-06-27 20:41:23,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 470 events. 259/470 cut-off events. For 7827/7827 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1798 event pairs, 49 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 2674. Up to 378 conditions per place. [2024-06-27 20:41:23,767 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-27 20:41:23,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 1029 flow [2024-06-27 20:41:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 20:41:23,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 20:41:23,769 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 815 flow. Second operand 8 states and 97 transitions. [2024-06-27 20:41:23,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 1029 flow [2024-06-27 20:41:23,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 954 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:23,780 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 796 flow [2024-06-27 20:41:23,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-27 20:41:23,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-27 20:41:23,781 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 796 flow [2024-06-27 20:41:23,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:23,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:23,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:23,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:41:23,782 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:23,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2098227331, now seen corresponding path program 2 times [2024-06-27 20:41:23,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:23,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962608914] [2024-06-27 20:41:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:23,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962608914] [2024-06-27 20:41:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962608914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:24,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190979334] [2024-06-27 20:41:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:24,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:24,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:24,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 796 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:24,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:24,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:24,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:24,693 INFO L124 PetriNetUnfolderBase]: 275/490 cut-off events. [2024-06-27 20:41:24,694 INFO L125 PetriNetUnfolderBase]: For 8629/8629 co-relation queries the response was YES. [2024-06-27 20:41:24,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 490 events. 275/490 cut-off events. For 8629/8629 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1859 event pairs, 53 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2781. Up to 419 conditions per place. [2024-06-27 20:41:24,702 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2024-06-27 20:41:24,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1066 flow [2024-06-27 20:41:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:41:24,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:41:24,703 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 796 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:41:24,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1066 flow [2024-06-27 20:41:24,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 1003 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:24,716 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 818 flow [2024-06-27 20:41:24,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=818, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-06-27 20:41:24,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 20:41:24,717 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 818 flow [2024-06-27 20:41:24,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:24,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:24,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:24,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:41:24,718 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:24,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1971370275, now seen corresponding path program 3 times [2024-06-27 20:41:24,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:24,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170327842] [2024-06-27 20:41:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:24,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170327842] [2024-06-27 20:41:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170327842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:25,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:25,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677299676] [2024-06-27 20:41:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:25,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:25,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 818 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:25,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:25,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:25,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:25,780 INFO L124 PetriNetUnfolderBase]: 291/516 cut-off events. [2024-06-27 20:41:25,781 INFO L125 PetriNetUnfolderBase]: For 9998/9998 co-relation queries the response was YES. [2024-06-27 20:41:25,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 516 events. 291/516 cut-off events. For 9998/9998 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1980 event pairs, 53 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3038. Up to 392 conditions per place. [2024-06-27 20:41:25,786 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 40 changer transitions 0/107 dead transitions. [2024-06-27 20:41:25,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 1178 flow [2024-06-27 20:41:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 20:41:25,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 20:41:25,788 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 818 flow. Second operand 9 states and 101 transitions. [2024-06-27 20:41:25,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 1178 flow [2024-06-27 20:41:25,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 1109 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:25,802 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 898 flow [2024-06-27 20:41:25,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-06-27 20:41:25,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-27 20:41:25,804 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 898 flow [2024-06-27 20:41:25,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:25,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:25,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:25,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:41:25,804 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:25,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1546422848, now seen corresponding path program 1 times [2024-06-27 20:41:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438706605] [2024-06-27 20:41:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438706605] [2024-06-27 20:41:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438706605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:26,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674139964] [2024-06-27 20:41:26,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:26,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:26,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:26,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:26,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:26,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:26,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:26,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:26,753 INFO L124 PetriNetUnfolderBase]: 294/523 cut-off events. [2024-06-27 20:41:26,753 INFO L125 PetriNetUnfolderBase]: For 10785/10785 co-relation queries the response was YES. [2024-06-27 20:41:26,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3195 conditions, 523 events. 294/523 cut-off events. For 10785/10785 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2048 event pairs, 85 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 3148. Up to 490 conditions per place. [2024-06-27 20:41:26,766 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-06-27 20:41:26,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 1146 flow [2024-06-27 20:41:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 20:41:26,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-27 20:41:26,769 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 898 flow. Second operand 9 states and 91 transitions. [2024-06-27 20:41:26,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 1146 flow [2024-06-27 20:41:26,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 1077 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:26,786 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 886 flow [2024-06-27 20:41:26,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=886, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2024-06-27 20:41:26,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 20:41:26,787 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 886 flow [2024-06-27 20:41:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:26,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:26,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:26,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:41:26,788 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:26,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1546428645, now seen corresponding path program 4 times [2024-06-27 20:41:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167646728] [2024-06-27 20:41:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:27,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:27,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167646728] [2024-06-27 20:41:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167646728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:27,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279134191] [2024-06-27 20:41:27,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:27,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:27,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:27,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:27,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:27,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:27,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:27,693 INFO L124 PetriNetUnfolderBase]: 295/523 cut-off events. [2024-06-27 20:41:27,693 INFO L125 PetriNetUnfolderBase]: For 11213/11213 co-relation queries the response was YES. [2024-06-27 20:41:27,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 523 events. 295/523 cut-off events. For 11213/11213 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2014 event pairs, 56 based on Foata normal form. 2/525 useless extension candidates. Maximal degree in co-relation 3195. Up to 400 conditions per place. [2024-06-27 20:41:27,698 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 38 changer transitions 0/111 dead transitions. [2024-06-27 20:41:27,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 1230 flow [2024-06-27 20:41:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:41:27,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:41:27,705 INFO L175 Difference]: Start difference. First operand has 108 places, 94 transitions, 886 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:41:27,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 1230 flow [2024-06-27 20:41:27,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 1189 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:27,722 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 958 flow [2024-06-27 20:41:27,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-27 20:41:27,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-27 20:41:27,722 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 958 flow [2024-06-27 20:41:27,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:27,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:27,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:27,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:41:27,723 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:27,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash 325269062, now seen corresponding path program 3 times [2024-06-27 20:41:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:27,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211374952] [2024-06-27 20:41:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:28,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211374952] [2024-06-27 20:41:28,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211374952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:28,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:28,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625132067] [2024-06-27 20:41:28,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:28,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:28,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:28,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 958 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:28,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:28,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:28,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:28,912 INFO L124 PetriNetUnfolderBase]: 282/511 cut-off events. [2024-06-27 20:41:28,913 INFO L125 PetriNetUnfolderBase]: For 12723/12725 co-relation queries the response was YES. [2024-06-27 20:41:28,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3270 conditions, 511 events. 282/511 cut-off events. For 12723/12725 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2052 event pairs, 70 based on Foata normal form. 1/509 useless extension candidates. Maximal degree in co-relation 3220. Up to 389 conditions per place. [2024-06-27 20:41:28,919 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 63 selfloop transitions, 31 changer transitions 0/107 dead transitions. [2024-06-27 20:41:28,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 1178 flow [2024-06-27 20:41:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 20:41:28,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 20:41:28,921 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 958 flow. Second operand 7 states and 85 transitions. [2024-06-27 20:41:28,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 1178 flow [2024-06-27 20:41:28,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 1093 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:28,937 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 955 flow [2024-06-27 20:41:28,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=955, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2024-06-27 20:41:28,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-27 20:41:28,938 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 955 flow [2024-06-27 20:41:28,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:28,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:28,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:41:28,939 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:28,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash 620539290, now seen corresponding path program 1 times [2024-06-27 20:41:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:28,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523202931] [2024-06-27 20:41:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:29,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:29,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523202931] [2024-06-27 20:41:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523202931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:29,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:29,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083959322] [2024-06-27 20:41:29,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:29,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:29,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:29,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:29,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 955 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:29,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:29,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:29,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:29,909 INFO L124 PetriNetUnfolderBase]: 299/530 cut-off events. [2024-06-27 20:41:29,910 INFO L125 PetriNetUnfolderBase]: For 12842/12842 co-relation queries the response was YES. [2024-06-27 20:41:29,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 530 events. 299/530 cut-off events. For 12842/12842 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2043 event pairs, 54 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3310. Up to 451 conditions per place. [2024-06-27 20:41:29,915 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 85 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-27 20:41:29,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 1255 flow [2024-06-27 20:41:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:41:29,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:41:29,916 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 955 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:41:29,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 1255 flow [2024-06-27 20:41:29,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 1169 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:29,935 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 956 flow [2024-06-27 20:41:29,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=956, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-27 20:41:29,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-27 20:41:29,936 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 956 flow [2024-06-27 20:41:29,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:29,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:29,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:29,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:41:29,937 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:29,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1512609929, now seen corresponding path program 5 times [2024-06-27 20:41:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:29,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073235252] [2024-06-27 20:41:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:29,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:30,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073235252] [2024-06-27 20:41:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073235252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:30,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:30,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:30,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507277336] [2024-06-27 20:41:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:30,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:30,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:30,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:30,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 956 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:30,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:30,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:30,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:30,807 INFO L124 PetriNetUnfolderBase]: 305/541 cut-off events. [2024-06-27 20:41:30,807 INFO L125 PetriNetUnfolderBase]: For 11995/11995 co-relation queries the response was YES. [2024-06-27 20:41:30,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 541 events. 305/541 cut-off events. For 11995/11995 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2118 event pairs, 56 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 3348. Up to 441 conditions per place. [2024-06-27 20:41:30,812 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 34 changer transitions 0/113 dead transitions. [2024-06-27 20:41:30,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1254 flow [2024-06-27 20:41:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:41:30,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:41:30,813 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 956 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:41:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1254 flow [2024-06-27 20:41:30,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 1183 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:30,829 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 1004 flow [2024-06-27 20:41:30,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1004, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-06-27 20:41:30,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-27 20:41:30,830 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 1004 flow [2024-06-27 20:41:30,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:30,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:30,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:30,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:41:30,831 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:30,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash 329084077, now seen corresponding path program 6 times [2024-06-27 20:41:30,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:30,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854215887] [2024-06-27 20:41:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:30,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:31,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854215887] [2024-06-27 20:41:31,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854215887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:31,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:31,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056370568] [2024-06-27 20:41:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:31,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:31,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:31,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 1004 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:31,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:31,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:31,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:31,692 INFO L124 PetriNetUnfolderBase]: 321/566 cut-off events. [2024-06-27 20:41:31,692 INFO L125 PetriNetUnfolderBase]: For 14173/14173 co-relation queries the response was YES. [2024-06-27 20:41:31,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3728 conditions, 566 events. 321/566 cut-off events. For 14173/14173 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2234 event pairs, 52 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 3677. Up to 395 conditions per place. [2024-06-27 20:41:31,697 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 54 changer transitions 0/117 dead transitions. [2024-06-27 20:41:31,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 1406 flow [2024-06-27 20:41:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 20:41:31,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 20:41:31,698 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 1004 flow. Second operand 8 states and 90 transitions. [2024-06-27 20:41:31,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 1406 flow [2024-06-27 20:41:31,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1327 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:31,718 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 1125 flow [2024-06-27 20:41:31,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1125, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-27 20:41:31,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-27 20:41:31,719 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 1125 flow [2024-06-27 20:41:31,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:31,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:31,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:41:31,719 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:31,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1512759876, now seen corresponding path program 2 times [2024-06-27 20:41:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488799028] [2024-06-27 20:41:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:31,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488799028] [2024-06-27 20:41:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488799028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:32,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312013505] [2024-06-27 20:41:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:32,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:32,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:32,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 1125 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:32,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:32,633 INFO L124 PetriNetUnfolderBase]: 324/573 cut-off events. [2024-06-27 20:41:32,634 INFO L125 PetriNetUnfolderBase]: For 15111/15111 co-relation queries the response was YES. [2024-06-27 20:41:32,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 573 events. 324/573 cut-off events. For 15111/15111 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2290 event pairs, 91 based on Foata normal form. 1/574 useless extension candidates. Maximal degree in co-relation 3820. Up to 531 conditions per place. [2024-06-27 20:41:32,639 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 91 selfloop transitions, 22 changer transitions 0/115 dead transitions. [2024-06-27 20:41:32,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 1393 flow [2024-06-27 20:41:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 20:41:32,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 20:41:32,641 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 1125 flow. Second operand 8 states and 82 transitions. [2024-06-27 20:41:32,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 1393 flow [2024-06-27 20:41:32,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 1305 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:32,664 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 1113 flow [2024-06-27 20:41:32,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1113, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-06-27 20:41:32,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-27 20:41:32,665 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 1113 flow [2024-06-27 20:41:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:32,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:32,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:32,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:41:32,665 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:32,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:32,666 INFO L85 PathProgramCache]: Analyzing trace with hash 329078497, now seen corresponding path program 7 times [2024-06-27 20:41:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:32,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77974283] [2024-06-27 20:41:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:32,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77974283] [2024-06-27 20:41:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77974283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674971460] [2024-06-27 20:41:33,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:33,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:33,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 1113 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:33,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:33,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:33,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:33,609 INFO L124 PetriNetUnfolderBase]: 325/574 cut-off events. [2024-06-27 20:41:33,609 INFO L125 PetriNetUnfolderBase]: For 14604/14604 co-relation queries the response was YES. [2024-06-27 20:41:33,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 574 events. 325/574 cut-off events. For 14604/14604 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2272 event pairs, 58 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3804. Up to 403 conditions per place. [2024-06-27 20:41:33,613 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 50 changer transitions 0/121 dead transitions. [2024-06-27 20:41:33,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 121 transitions, 1487 flow [2024-06-27 20:41:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 20:41:33,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-27 20:41:33,614 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 1113 flow. Second operand 8 states and 91 transitions. [2024-06-27 20:41:33,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 121 transitions, 1487 flow [2024-06-27 20:41:33,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 1429 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:33,629 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 1207 flow [2024-06-27 20:41:33,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1207, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2024-06-27 20:41:33,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-27 20:41:33,630 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 1207 flow [2024-06-27 20:41:33,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:33,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:33,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:33,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:41:33,630 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:33,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:33,630 INFO L85 PathProgramCache]: Analyzing trace with hash -5687611, now seen corresponding path program 8 times [2024-06-27 20:41:33,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:33,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851744480] [2024-06-27 20:41:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:33,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851744480] [2024-06-27 20:41:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851744480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892207592] [2024-06-27 20:41:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:34,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:34,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:34,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 1207 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:34,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:34,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:34,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:34,666 INFO L124 PetriNetUnfolderBase]: 341/599 cut-off events. [2024-06-27 20:41:34,667 INFO L125 PetriNetUnfolderBase]: For 15999/15999 co-relation queries the response was YES. [2024-06-27 20:41:34,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4149 conditions, 599 events. 341/599 cut-off events. For 15999/15999 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2411 event pairs, 71 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 4095. Up to 382 conditions per place. [2024-06-27 20:41:34,670 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 57 changer transitions 0/128 dead transitions. [2024-06-27 20:41:34,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 1781 flow [2024-06-27 20:41:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 20:41:34,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 20:41:34,672 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 1207 flow. Second operand 8 states and 95 transitions. [2024-06-27 20:41:34,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 1781 flow [2024-06-27 20:41:34,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 1676 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:34,693 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 1351 flow [2024-06-27 20:41:34,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1351, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-06-27 20:41:34,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-27 20:41:34,694 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 1351 flow [2024-06-27 20:41:34,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:34,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:34,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:34,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:41:34,694 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:34,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:34,695 INFO L85 PathProgramCache]: Analyzing trace with hash -5687394, now seen corresponding path program 3 times [2024-06-27 20:41:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185640837] [2024-06-27 20:41:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:35,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:35,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185640837] [2024-06-27 20:41:35,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185640837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:35,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:35,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:35,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70785496] [2024-06-27 20:41:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:35,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:35,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:35,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:35,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:35,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 1351 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:35,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:35,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:35,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:35,608 INFO L124 PetriNetUnfolderBase]: 344/607 cut-off events. [2024-06-27 20:41:35,608 INFO L125 PetriNetUnfolderBase]: For 16021/16021 co-relation queries the response was YES. [2024-06-27 20:41:35,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 607 events. 344/607 cut-off events. For 16021/16021 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2473 event pairs, 99 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 4150. Up to 537 conditions per place. [2024-06-27 20:41:35,614 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-27 20:41:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 128 transitions, 1723 flow [2024-06-27 20:41:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 20:41:35,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 20:41:35,616 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 1351 flow. Second operand 8 states and 86 transitions. [2024-06-27 20:41:35,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 128 transitions, 1723 flow [2024-06-27 20:41:35,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 128 transitions, 1583 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:35,644 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 1345 flow [2024-06-27 20:41:35,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1345, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2024-06-27 20:41:35,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-27 20:41:35,645 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 1345 flow [2024-06-27 20:41:35,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:35,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:35,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:35,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:41:35,646 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:35,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash -5693191, now seen corresponding path program 9 times [2024-06-27 20:41:35,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:35,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673373824] [2024-06-27 20:41:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:36,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673373824] [2024-06-27 20:41:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673373824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:36,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734680022] [2024-06-27 20:41:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:36,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:36,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:36,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:36,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 1345 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:36,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:36,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:36,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:36,551 INFO L124 PetriNetUnfolderBase]: 340/599 cut-off events. [2024-06-27 20:41:36,551 INFO L125 PetriNetUnfolderBase]: For 15903/15903 co-relation queries the response was YES. [2024-06-27 20:41:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4062 conditions, 599 events. 340/599 cut-off events. For 15903/15903 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2408 event pairs, 71 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 4006. Up to 384 conditions per place. [2024-06-27 20:41:36,555 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 72 selfloop transitions, 58 changer transitions 0/132 dead transitions. [2024-06-27 20:41:36,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 1751 flow [2024-06-27 20:41:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 20:41:36,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:41:36,557 INFO L175 Difference]: Start difference. First operand has 127 places, 120 transitions, 1345 flow. Second operand 8 states and 92 transitions. [2024-06-27 20:41:36,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 1751 flow [2024-06-27 20:41:36,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 1693 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:36,581 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 1408 flow [2024-06-27 20:41:36,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1408, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2024-06-27 20:41:36,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-27 20:41:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 1408 flow [2024-06-27 20:41:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:36,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:36,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:41:36,582 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:36,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1931166, now seen corresponding path program 4 times [2024-06-27 20:41:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587822742] [2024-06-27 20:41:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:37,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587822742] [2024-06-27 20:41:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587822742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416912250] [2024-06-27 20:41:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:37,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:37,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 1408 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:37,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:37,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:37,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:37,438 INFO L124 PetriNetUnfolderBase]: 343/606 cut-off events. [2024-06-27 20:41:37,439 INFO L125 PetriNetUnfolderBase]: For 16850/16850 co-relation queries the response was YES. [2024-06-27 20:41:37,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 606 events. 343/606 cut-off events. For 16850/16850 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2495 event pairs, 98 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 4168. Up to 535 conditions per place. [2024-06-27 20:41:37,444 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 92 selfloop transitions, 36 changer transitions 0/130 dead transitions. [2024-06-27 20:41:37,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1762 flow [2024-06-27 20:41:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:41:37,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:41:37,445 INFO L175 Difference]: Start difference. First operand has 132 places, 120 transitions, 1408 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:41:37,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1762 flow [2024-06-27 20:41:37,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1648 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:37,473 INFO L231 Difference]: Finished difference. Result has 134 places, 122 transitions, 1395 flow [2024-06-27 20:41:37,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1395, PETRI_PLACES=134, PETRI_TRANSITIONS=122} [2024-06-27 20:41:37,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-27 20:41:37,473 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 122 transitions, 1395 flow [2024-06-27 20:41:37,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:37,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:37,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:41:37,474 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:37,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1749145616, now seen corresponding path program 5 times [2024-06-27 20:41:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634327705] [2024-06-27 20:41:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634327705] [2024-06-27 20:41:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634327705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:38,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:38,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080828351] [2024-06-27 20:41:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:38,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:38,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:38,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 122 transitions, 1395 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:38,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:38,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:38,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:38,381 INFO L124 PetriNetUnfolderBase]: 341/603 cut-off events. [2024-06-27 20:41:38,381 INFO L125 PetriNetUnfolderBase]: For 17141/17141 co-relation queries the response was YES. [2024-06-27 20:41:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 603 events. 341/603 cut-off events. For 17141/17141 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2464 event pairs, 98 based on Foata normal form. 1/604 useless extension candidates. Maximal degree in co-relation 4081. Up to 533 conditions per place. [2024-06-27 20:41:38,384 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 94 selfloop transitions, 33 changer transitions 0/129 dead transitions. [2024-06-27 20:41:38,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 129 transitions, 1665 flow [2024-06-27 20:41:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:41:38,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:41:38,385 INFO L175 Difference]: Start difference. First operand has 134 places, 122 transitions, 1395 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:41:38,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 129 transitions, 1665 flow [2024-06-27 20:41:38,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 129 transitions, 1579 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:38,405 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 1380 flow [2024-06-27 20:41:38,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1380, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2024-06-27 20:41:38,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-27 20:41:38,406 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 1380 flow [2024-06-27 20:41:38,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:38,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:38,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:41:38,407 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:38,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1664039, now seen corresponding path program 10 times [2024-06-27 20:41:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271529573] [2024-06-27 20:41:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:39,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:39,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271529573] [2024-06-27 20:41:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271529573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:39,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:39,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:39,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118217408] [2024-06-27 20:41:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:39,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:39,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:39,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 122 transitions, 1380 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:39,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:39,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:39,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:39,274 INFO L124 PetriNetUnfolderBase]: 337/595 cut-off events. [2024-06-27 20:41:39,275 INFO L125 PetriNetUnfolderBase]: For 17605/17605 co-relation queries the response was YES. [2024-06-27 20:41:39,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 595 events. 337/595 cut-off events. For 17605/17605 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2408 event pairs, 60 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 3996. Up to 383 conditions per place. [2024-06-27 20:41:39,278 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 67 changer transitions 0/133 dead transitions. [2024-06-27 20:41:39,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1738 flow [2024-06-27 20:41:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 20:41:39,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 20:41:39,285 INFO L175 Difference]: Start difference. First operand has 137 places, 122 transitions, 1380 flow. Second operand 8 states and 90 transitions. [2024-06-27 20:41:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1738 flow [2024-06-27 20:41:39,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1655 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:39,316 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1436 flow [2024-06-27 20:41:39,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1436, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-06-27 20:41:39,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 20:41:39,316 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1436 flow [2024-06-27 20:41:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:39,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:39,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:41:39,317 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:39,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-27 20:41:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217094368] [2024-06-27 20:41:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217094368] [2024-06-27 20:41:40,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217094368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:40,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:40,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:40,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393840464] [2024-06-27 20:41:40,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:40,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:40,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:40,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:40,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:40,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:40,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:40,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:40,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:40,452 INFO L124 PetriNetUnfolderBase]: 335/593 cut-off events. [2024-06-27 20:41:40,452 INFO L125 PetriNetUnfolderBase]: For 17873/17873 co-relation queries the response was YES. [2024-06-27 20:41:40,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4131 conditions, 593 events. 335/593 cut-off events. For 17873/17873 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2440 event pairs, 117 based on Foata normal form. 1/594 useless extension candidates. Maximal degree in co-relation 4070. Up to 565 conditions per place. [2024-06-27 20:41:40,455 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 15 changer transitions 0/132 dead transitions. [2024-06-27 20:41:40,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1726 flow [2024-06-27 20:41:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 20:41:40,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:41:40,457 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1436 flow. Second operand 9 states and 87 transitions. [2024-06-27 20:41:40,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1726 flow [2024-06-27 20:41:40,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 132 transitions, 1576 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:40,485 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 1337 flow [2024-06-27 20:41:40,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1337, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-06-27 20:41:40,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-27 20:41:40,485 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 1337 flow [2024-06-27 20:41:40,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:40,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:40,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:41:40,486 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:40,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1387546912, now seen corresponding path program 1 times [2024-06-27 20:41:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:40,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786121969] [2024-06-27 20:41:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786121969] [2024-06-27 20:41:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786121969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:41,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984218349] [2024-06-27 20:41:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:41,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:41,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 1337 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:41,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:41,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:41,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:41,515 INFO L124 PetriNetUnfolderBase]: 321/589 cut-off events. [2024-06-27 20:41:41,515 INFO L125 PetriNetUnfolderBase]: For 20295/20297 co-relation queries the response was YES. [2024-06-27 20:41:41,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 589 events. 321/589 cut-off events. For 20295/20297 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2571 event pairs, 55 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3981. Up to 439 conditions per place. [2024-06-27 20:41:41,519 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 23 changer transitions 0/142 dead transitions. [2024-06-27 20:41:41,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 142 transitions, 1643 flow [2024-06-27 20:41:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:41:41,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:41:41,531 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 1337 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:41:41,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 142 transitions, 1643 flow [2024-06-27 20:41:41,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 142 transitions, 1545 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:41:41,561 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1313 flow [2024-06-27 20:41:41,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1313, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2024-06-27 20:41:41,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 20:41:41,562 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1313 flow [2024-06-27 20:41:41,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:41,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:41,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:41,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:41:41,563 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:41,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash 927591744, now seen corresponding path program 2 times [2024-06-27 20:41:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:41,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442179489] [2024-06-27 20:41:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:42,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442179489] [2024-06-27 20:41:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442179489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:42,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:42,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527357562] [2024-06-27 20:41:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:42,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:42,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:42,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1313 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:42,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:42,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:42,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:42,612 INFO L124 PetriNetUnfolderBase]: 328/606 cut-off events. [2024-06-27 20:41:42,613 INFO L125 PetriNetUnfolderBase]: For 20271/20271 co-relation queries the response was YES. [2024-06-27 20:41:42,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 606 events. 328/606 cut-off events. For 20271/20271 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2661 event pairs, 83 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 4020. Up to 475 conditions per place. [2024-06-27 20:41:42,616 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 101 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-06-27 20:41:42,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 1629 flow [2024-06-27 20:41:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 20:41:42,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:41:42,618 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1313 flow. Second operand 9 states and 105 transitions. [2024-06-27 20:41:42,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 1629 flow [2024-06-27 20:41:42,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 144 transitions, 1550 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:42,647 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 1316 flow [2024-06-27 20:41:42,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1316, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2024-06-27 20:41:42,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-27 20:41:42,648 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 1316 flow [2024-06-27 20:41:42,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:42,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:42,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:42,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:41:42,649 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:42,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash 927672654, now seen corresponding path program 3 times [2024-06-27 20:41:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:42,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158993896] [2024-06-27 20:41:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:42,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:43,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:43,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158993896] [2024-06-27 20:41:43,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158993896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:43,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:43,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:43,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141576796] [2024-06-27 20:41:43,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:43,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:43,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:43,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 1316 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:43,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:43,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:43,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:43,735 INFO L124 PetriNetUnfolderBase]: 336/618 cut-off events. [2024-06-27 20:41:43,736 INFO L125 PetriNetUnfolderBase]: For 24199/24202 co-relation queries the response was YES. [2024-06-27 20:41:43,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4259 conditions, 618 events. 336/618 cut-off events. For 24199/24202 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2745 event pairs, 81 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 4197. Up to 491 conditions per place. [2024-06-27 20:41:43,740 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 26 changer transitions 0/144 dead transitions. [2024-06-27 20:41:43,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 1628 flow [2024-06-27 20:41:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 20:41:43,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:41:43,742 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 1316 flow. Second operand 9 states and 105 transitions. [2024-06-27 20:41:43,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 1628 flow [2024-06-27 20:41:43,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 144 transitions, 1568 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:43,769 INFO L231 Difference]: Finished difference. Result has 144 places, 129 transitions, 1337 flow [2024-06-27 20:41:43,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1337, PETRI_PLACES=144, PETRI_TRANSITIONS=129} [2024-06-27 20:41:43,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 20:41:43,770 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 129 transitions, 1337 flow [2024-06-27 20:41:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:43,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:43,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:41:43,771 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash -694473290, now seen corresponding path program 2 times [2024-06-27 20:41:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973230417] [2024-06-27 20:41:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:43,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:44,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:44,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973230417] [2024-06-27 20:41:44,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973230417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:44,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695155014] [2024-06-27 20:41:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:44,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:44,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:44,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:44,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:44,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 129 transitions, 1337 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:44,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:44,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:44,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:44,712 INFO L124 PetriNetUnfolderBase]: 383/681 cut-off events. [2024-06-27 20:41:44,712 INFO L125 PetriNetUnfolderBase]: For 25458/25458 co-relation queries the response was YES. [2024-06-27 20:41:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 681 events. 383/681 cut-off events. For 25458/25458 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2957 event pairs, 57 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4595. Up to 510 conditions per place. [2024-06-27 20:41:44,716 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 47 changer transitions 0/153 dead transitions. [2024-06-27 20:41:44,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 153 transitions, 1933 flow [2024-06-27 20:41:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:41:44,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:41:44,717 INFO L175 Difference]: Start difference. First operand has 144 places, 129 transitions, 1337 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:41:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 153 transitions, 1933 flow [2024-06-27 20:41:44,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 153 transitions, 1864 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:44,746 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 1467 flow [2024-06-27 20:41:44,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1467, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2024-06-27 20:41:44,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 20:41:44,746 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 1467 flow [2024-06-27 20:41:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:44,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:44,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:44,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:41:44,747 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:44,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash 920263468, now seen corresponding path program 1 times [2024-06-27 20:41:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:44,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862185609] [2024-06-27 20:41:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:44,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:45,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:45,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862185609] [2024-06-27 20:41:45,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862185609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:45,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:45,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:45,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059122669] [2024-06-27 20:41:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:45,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:45,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:45,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:45,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 1467 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:45,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:45,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:45,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:45,790 INFO L124 PetriNetUnfolderBase]: 386/686 cut-off events. [2024-06-27 20:41:45,790 INFO L125 PetriNetUnfolderBase]: For 26348/26348 co-relation queries the response was YES. [2024-06-27 20:41:45,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 686 events. 386/686 cut-off events. For 26348/26348 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2982 event pairs, 92 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 4730. Up to 607 conditions per place. [2024-06-27 20:41:45,794 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 29 changer transitions 0/152 dead transitions. [2024-06-27 20:41:45,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 152 transitions, 1855 flow [2024-06-27 20:41:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:41:45,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:41:45,795 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 1467 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:41:45,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 152 transitions, 1855 flow [2024-06-27 20:41:45,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 1780 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:45,827 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 1504 flow [2024-06-27 20:41:45,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1504, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2024-06-27 20:41:45,827 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-27 20:41:45,827 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 1504 flow [2024-06-27 20:41:45,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:45,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:45,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:45,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:41:45,828 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:45,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash 787310720, now seen corresponding path program 3 times [2024-06-27 20:41:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185498133] [2024-06-27 20:41:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:46,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:46,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185498133] [2024-06-27 20:41:46,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185498133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:46,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:46,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445555940] [2024-06-27 20:41:46,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:46,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:46,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:46,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:46,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 137 transitions, 1504 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:46,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:46,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:46,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:46,757 INFO L124 PetriNetUnfolderBase]: 392/696 cut-off events. [2024-06-27 20:41:46,757 INFO L125 PetriNetUnfolderBase]: For 28038/28038 co-relation queries the response was YES. [2024-06-27 20:41:46,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 696 events. 392/696 cut-off events. For 28038/28038 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3039 event pairs, 72 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 4844. Up to 615 conditions per place. [2024-06-27 20:41:46,761 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 29 changer transitions 0/156 dead transitions. [2024-06-27 20:41:46,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 156 transitions, 1900 flow [2024-06-27 20:41:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:41:46,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:41:46,762 INFO L175 Difference]: Start difference. First operand has 151 places, 137 transitions, 1504 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:41:46,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 156 transitions, 1900 flow [2024-06-27 20:41:46,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 156 transitions, 1828 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:46,799 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 1533 flow [2024-06-27 20:41:46,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1533, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2024-06-27 20:41:46,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-27 20:41:46,800 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 1533 flow [2024-06-27 20:41:46,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:46,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:46,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:46,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:41:46,801 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:46,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -872408442, now seen corresponding path program 4 times [2024-06-27 20:41:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634073306] [2024-06-27 20:41:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634073306] [2024-06-27 20:41:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634073306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:47,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:47,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:47,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733390025] [2024-06-27 20:41:47,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:47,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:47,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:47,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:47,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:47,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 1533 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:47,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:47,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:47,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:47,909 INFO L124 PetriNetUnfolderBase]: 366/678 cut-off events. [2024-06-27 20:41:47,909 INFO L125 PetriNetUnfolderBase]: For 30008/30010 co-relation queries the response was YES. [2024-06-27 20:41:47,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 678 events. 366/678 cut-off events. For 30008/30010 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3128 event pairs, 61 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4811. Up to 545 conditions per place. [2024-06-27 20:41:47,914 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 113 selfloop transitions, 22 changer transitions 0/156 dead transitions. [2024-06-27 20:41:47,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 156 transitions, 1873 flow [2024-06-27 20:41:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:41:47,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:41:47,915 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 1533 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:41:47,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 156 transitions, 1873 flow [2024-06-27 20:41:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 156 transitions, 1792 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:47,948 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 1536 flow [2024-06-27 20:41:47,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1536, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2024-06-27 20:41:47,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-27 20:41:47,948 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 1536 flow [2024-06-27 20:41:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:47,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:47,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:47,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:41:47,949 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:47,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash -987696822, now seen corresponding path program 5 times [2024-06-27 20:41:47,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:47,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612801354] [2024-06-27 20:41:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:47,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:48,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612801354] [2024-06-27 20:41:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612801354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:48,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165694070] [2024-06-27 20:41:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:48,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:48,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 1536 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:48,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:48,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:48,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:49,049 INFO L124 PetriNetUnfolderBase]: 370/684 cut-off events. [2024-06-27 20:41:49,049 INFO L125 PetriNetUnfolderBase]: For 31849/31853 co-relation queries the response was YES. [2024-06-27 20:41:49,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4934 conditions, 684 events. 370/684 cut-off events. For 31849/31853 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3163 event pairs, 61 based on Foata normal form. 2/682 useless extension candidates. Maximal degree in co-relation 4865. Up to 554 conditions per place. [2024-06-27 20:41:49,053 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 110 selfloop transitions, 25 changer transitions 0/156 dead transitions. [2024-06-27 20:41:49,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 156 transitions, 1872 flow [2024-06-27 20:41:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:41:49,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:41:49,055 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 1536 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:41:49,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 156 transitions, 1872 flow [2024-06-27 20:41:49,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 156 transitions, 1808 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:49,102 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 1555 flow [2024-06-27 20:41:49,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2024-06-27 20:41:49,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-27 20:41:49,103 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 1555 flow [2024-06-27 20:41:49,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:49,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:49,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:41:49,103 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:49,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 617737944, now seen corresponding path program 2 times [2024-06-27 20:41:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197092160] [2024-06-27 20:41:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:49,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197092160] [2024-06-27 20:41:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197092160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:49,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:49,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930504024] [2024-06-27 20:41:49,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:49,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:49,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:49,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:49,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 1555 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:49,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:49,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:49,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:50,182 INFO L124 PetriNetUnfolderBase]: 403/720 cut-off events. [2024-06-27 20:41:50,183 INFO L125 PetriNetUnfolderBase]: For 31298/31298 co-relation queries the response was YES. [2024-06-27 20:41:50,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5065 conditions, 720 events. 403/720 cut-off events. For 31298/31298 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3210 event pairs, 67 based on Foata normal form. 1/721 useless extension candidates. Maximal degree in co-relation 4995. Up to 641 conditions per place. [2024-06-27 20:41:50,187 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 28 changer transitions 0/156 dead transitions. [2024-06-27 20:41:50,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 156 transitions, 1907 flow [2024-06-27 20:41:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:41:50,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:41:50,188 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 1555 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:41:50,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 156 transitions, 1907 flow [2024-06-27 20:41:50,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 156 transitions, 1824 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:50,226 INFO L231 Difference]: Finished difference. Result has 161 places, 142 transitions, 1536 flow [2024-06-27 20:41:50,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1536, PETRI_PLACES=161, PETRI_TRANSITIONS=142} [2024-06-27 20:41:50,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-27 20:41:50,227 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 1536 flow [2024-06-27 20:41:50,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:50,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:50,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:41:50,227 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:50,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash 736009950, now seen corresponding path program 4 times [2024-06-27 20:41:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:50,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394634480] [2024-06-27 20:41:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394634480] [2024-06-27 20:41:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394634480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:50,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:50,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813029055] [2024-06-27 20:41:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:50,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:50,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 142 transitions, 1536 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:50,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:50,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:50,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:51,140 INFO L124 PetriNetUnfolderBase]: 399/714 cut-off events. [2024-06-27 20:41:51,141 INFO L125 PetriNetUnfolderBase]: For 31620/31620 co-relation queries the response was YES. [2024-06-27 20:41:51,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 714 events. 399/714 cut-off events. For 31620/31620 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3179 event pairs, 61 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4877. Up to 541 conditions per place. [2024-06-27 20:41:51,145 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 55 changer transitions 0/159 dead transitions. [2024-06-27 20:41:51,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 159 transitions, 1988 flow [2024-06-27 20:41:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:51,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:41:51,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:41:51,146 INFO L175 Difference]: Start difference. First operand has 161 places, 142 transitions, 1536 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:41:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 159 transitions, 1988 flow [2024-06-27 20:41:51,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 1866 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:51,188 INFO L231 Difference]: Finished difference. Result has 162 places, 142 transitions, 1529 flow [2024-06-27 20:41:51,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=162, PETRI_TRANSITIONS=142} [2024-06-27 20:41:51,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-27 20:41:51,189 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 142 transitions, 1529 flow [2024-06-27 20:41:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:51,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:51,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:41:51,189 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:51,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -982928154, now seen corresponding path program 1 times [2024-06-27 20:41:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696836155] [2024-06-27 20:41:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696836155] [2024-06-27 20:41:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696836155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143543007] [2024-06-27 20:41:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:51,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:51,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 142 transitions, 1529 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:51,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:51,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:51,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:52,110 INFO L124 PetriNetUnfolderBase]: 402/719 cut-off events. [2024-06-27 20:41:52,110 INFO L125 PetriNetUnfolderBase]: For 32023/32023 co-relation queries the response was YES. [2024-06-27 20:41:52,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5030 conditions, 719 events. 402/719 cut-off events. For 32023/32023 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3234 event pairs, 106 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 4958. Up to 683 conditions per place. [2024-06-27 20:41:52,115 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2024-06-27 20:41:52,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 156 transitions, 1887 flow [2024-06-27 20:41:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:41:52,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-27 20:41:52,116 INFO L175 Difference]: Start difference. First operand has 162 places, 142 transitions, 1529 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:41:52,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 156 transitions, 1887 flow [2024-06-27 20:41:52,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1787 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:52,161 INFO L231 Difference]: Finished difference. Result has 164 places, 144 transitions, 1496 flow [2024-06-27 20:41:52,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=164, PETRI_TRANSITIONS=144} [2024-06-27 20:41:52,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-27 20:41:52,162 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 144 transitions, 1496 flow [2024-06-27 20:41:52,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:52,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:52,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:52,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:41:52,163 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:52,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -983112852, now seen corresponding path program 6 times [2024-06-27 20:41:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038699758] [2024-06-27 20:41:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038699758] [2024-06-27 20:41:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038699758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:53,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:53,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:53,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463111556] [2024-06-27 20:41:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:53,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:53,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:53,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:53,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 144 transitions, 1496 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:53,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:53,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:53,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:53,336 INFO L124 PetriNetUnfolderBase]: 371/690 cut-off events. [2024-06-27 20:41:53,336 INFO L125 PetriNetUnfolderBase]: For 34594/34596 co-relation queries the response was YES. [2024-06-27 20:41:53,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 690 events. 371/690 cut-off events. For 34594/34596 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3223 event pairs, 61 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4832. Up to 543 conditions per place. [2024-06-27 20:41:53,341 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 106 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2024-06-27 20:41:53,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 159 transitions, 1842 flow [2024-06-27 20:41:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:41:53,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:41:53,342 INFO L175 Difference]: Start difference. First operand has 164 places, 144 transitions, 1496 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:41:53,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 159 transitions, 1842 flow [2024-06-27 20:41:53,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 1791 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:53,389 INFO L231 Difference]: Finished difference. Result has 165 places, 145 transitions, 1543 flow [2024-06-27 20:41:53,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1543, PETRI_PLACES=165, PETRI_TRANSITIONS=145} [2024-06-27 20:41:53,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-27 20:41:53,389 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 145 transitions, 1543 flow [2024-06-27 20:41:53,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:53,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:53,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:53,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:41:53,390 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:53,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -983107892, now seen corresponding path program 5 times [2024-06-27 20:41:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990026525] [2024-06-27 20:41:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:53,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990026525] [2024-06-27 20:41:54,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990026525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:54,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:54,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:54,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825781318] [2024-06-27 20:41:54,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:54,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:54,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:54,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:54,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:54,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 145 transitions, 1543 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:54,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:54,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:54,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:54,345 INFO L124 PetriNetUnfolderBase]: 407/729 cut-off events. [2024-06-27 20:41:54,345 INFO L125 PetriNetUnfolderBase]: For 34953/34953 co-relation queries the response was YES. [2024-06-27 20:41:54,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5128 conditions, 729 events. 407/729 cut-off events. For 34953/34953 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3270 event pairs, 72 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 5054. Up to 557 conditions per place. [2024-06-27 20:41:54,349 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 48 changer transitions 0/164 dead transitions. [2024-06-27 20:41:54,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 164 transitions, 2049 flow [2024-06-27 20:41:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:41:54,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:41:54,350 INFO L175 Difference]: Start difference. First operand has 165 places, 145 transitions, 1543 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:41:54,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 164 transitions, 2049 flow [2024-06-27 20:41:54,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 1961 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:54,403 INFO L231 Difference]: Finished difference. Result has 168 places, 147 transitions, 1594 flow [2024-06-27 20:41:54,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1594, PETRI_PLACES=168, PETRI_TRANSITIONS=147} [2024-06-27 20:41:54,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-27 20:41:54,404 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 1594 flow [2024-06-27 20:41:54,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:54,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:54,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:54,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:41:54,404 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:54,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash -381992110, now seen corresponding path program 7 times [2024-06-27 20:41:54,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648345381] [2024-06-27 20:41:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648345381] [2024-06-27 20:41:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648345381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:55,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:55,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:55,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600758509] [2024-06-27 20:41:55,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:55,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 147 transitions, 1594 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:55,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:55,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:55,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:55,585 INFO L124 PetriNetUnfolderBase]: 377/701 cut-off events. [2024-06-27 20:41:55,586 INFO L125 PetriNetUnfolderBase]: For 38581/38585 co-relation queries the response was YES. [2024-06-27 20:41:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 701 events. 377/701 cut-off events. For 38581/38585 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3321 event pairs, 59 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 5069. Up to 512 conditions per place. [2024-06-27 20:41:55,593 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 113 selfloop transitions, 27 changer transitions 0/161 dead transitions. [2024-06-27 20:41:55,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 161 transitions, 1936 flow [2024-06-27 20:41:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 20:41:55,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:41:55,594 INFO L175 Difference]: Start difference. First operand has 168 places, 147 transitions, 1594 flow. Second operand 8 states and 92 transitions. [2024-06-27 20:41:55,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 161 transitions, 1936 flow [2024-06-27 20:41:55,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 161 transitions, 1838 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:55,649 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1592 flow [2024-06-27 20:41:55,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1592, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-06-27 20:41:55,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-27 20:41:55,649 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1592 flow [2024-06-27 20:41:55,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:55,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:55,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:41:55,650 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:55,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash -381931660, now seen corresponding path program 8 times [2024-06-27 20:41:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920473839] [2024-06-27 20:41:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920473839] [2024-06-27 20:41:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920473839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458312120] [2024-06-27 20:41:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:56,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:41:56,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1592 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:56,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:56,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:41:56,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:56,779 INFO L124 PetriNetUnfolderBase]: 381/707 cut-off events. [2024-06-27 20:41:56,779 INFO L125 PetriNetUnfolderBase]: For 40095/40098 co-relation queries the response was YES. [2024-06-27 20:41:56,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 707 events. 381/707 cut-off events. For 40095/40098 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3333 event pairs, 78 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 5096. Up to 545 conditions per place. [2024-06-27 20:41:56,784 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 107 selfloop transitions, 34 changer transitions 0/162 dead transitions. [2024-06-27 20:41:56,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 162 transitions, 1942 flow [2024-06-27 20:41:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 20:41:56,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:41:56,785 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1592 flow. Second operand 8 states and 94 transitions. [2024-06-27 20:41:56,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 162 transitions, 1942 flow [2024-06-27 20:41:56,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1856 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:56,845 INFO L231 Difference]: Finished difference. Result has 171 places, 149 transitions, 1619 flow [2024-06-27 20:41:56,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1619, PETRI_PLACES=171, PETRI_TRANSITIONS=149} [2024-06-27 20:41:56,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-27 20:41:56,846 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 149 transitions, 1619 flow [2024-06-27 20:41:56,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:56,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:56,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:41:56,846 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:56,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1970008549, now seen corresponding path program 1 times [2024-06-27 20:41:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381599244] [2024-06-27 20:41:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:57,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381599244] [2024-06-27 20:41:57,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381599244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:57,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:57,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:57,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008832165] [2024-06-27 20:41:57,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:57,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:57,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:57,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:57,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 149 transitions, 1619 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:57,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:57,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:57,988 INFO L124 PetriNetUnfolderBase]: 418/750 cut-off events. [2024-06-27 20:41:57,988 INFO L125 PetriNetUnfolderBase]: For 34109/34109 co-relation queries the response was YES. [2024-06-27 20:41:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 750 events. 418/750 cut-off events. For 34109/34109 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3404 event pairs, 69 based on Foata normal form. 1/751 useless extension candidates. Maximal degree in co-relation 5173. Up to 660 conditions per place. [2024-06-27 20:41:57,993 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-27 20:41:57,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 167 transitions, 2041 flow [2024-06-27 20:41:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:41:57,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:41:57,994 INFO L175 Difference]: Start difference. First operand has 171 places, 149 transitions, 1619 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:41:57,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 167 transitions, 2041 flow [2024-06-27 20:41:58,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 167 transitions, 1954 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:58,050 INFO L231 Difference]: Finished difference. Result has 175 places, 151 transitions, 1648 flow [2024-06-27 20:41:58,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1648, PETRI_PLACES=175, PETRI_TRANSITIONS=151} [2024-06-27 20:41:58,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-27 20:41:58,050 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 151 transitions, 1648 flow [2024-06-27 20:41:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:58,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:58,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:58,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:41:58,051 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:58,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -381931536, now seen corresponding path program 3 times [2024-06-27 20:41:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914986372] [2024-06-27 20:41:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:58,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914986372] [2024-06-27 20:41:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914986372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:58,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:58,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:58,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447812727] [2024-06-27 20:41:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:58,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:58,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:58,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:58,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 151 transitions, 1648 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:58,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:58,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:58,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:59,203 INFO L124 PetriNetUnfolderBase]: 416/747 cut-off events. [2024-06-27 20:41:59,203 INFO L125 PetriNetUnfolderBase]: For 31573/31573 co-relation queries the response was YES. [2024-06-27 20:41:59,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 747 events. 416/747 cut-off events. For 31573/31573 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3397 event pairs, 86 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 5035. Up to 628 conditions per place. [2024-06-27 20:41:59,208 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 43 changer transitions 0/164 dead transitions. [2024-06-27 20:41:59,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 164 transitions, 2012 flow [2024-06-27 20:41:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:41:59,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:41:59,209 INFO L175 Difference]: Start difference. First operand has 175 places, 151 transitions, 1648 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:41:59,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 164 transitions, 2012 flow [2024-06-27 20:41:59,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 1916 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:59,269 INFO L231 Difference]: Finished difference. Result has 175 places, 151 transitions, 1658 flow [2024-06-27 20:41:59,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1658, PETRI_PLACES=175, PETRI_TRANSITIONS=151} [2024-06-27 20:41:59,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-27 20:41:59,269 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 151 transitions, 1658 flow [2024-06-27 20:41:59,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:59,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:59,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:59,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:41:59,270 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:59,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -379130190, now seen corresponding path program 6 times [2024-06-27 20:41:59,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:59,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19799609] [2024-06-27 20:41:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:59,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19799609] [2024-06-27 20:41:59,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19799609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:59,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:59,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042800798] [2024-06-27 20:41:59,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:59,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:59,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:59,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:59,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:59,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 151 transitions, 1658 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:59,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:59,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:59,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:00,226 INFO L124 PetriNetUnfolderBase]: 422/757 cut-off events. [2024-06-27 20:42:00,226 INFO L125 PetriNetUnfolderBase]: For 33745/33745 co-relation queries the response was YES. [2024-06-27 20:42:00,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 757 events. 422/757 cut-off events. For 33745/33745 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3453 event pairs, 67 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 5160. Up to 632 conditions per place. [2024-06-27 20:42:00,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 40 changer transitions 0/168 dead transitions. [2024-06-27 20:42:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 168 transitions, 2074 flow [2024-06-27 20:42:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:42:00,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:42:00,232 INFO L175 Difference]: Start difference. First operand has 175 places, 151 transitions, 1658 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:42:00,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 168 transitions, 2074 flow [2024-06-27 20:42:00,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 168 transitions, 1924 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:00,293 INFO L231 Difference]: Finished difference. Result has 174 places, 153 transitions, 1639 flow [2024-06-27 20:42:00,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1639, PETRI_PLACES=174, PETRI_TRANSITIONS=153} [2024-06-27 20:42:00,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-27 20:42:00,294 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 153 transitions, 1639 flow [2024-06-27 20:42:00,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:00,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:00,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:00,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:42:00,294 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:00,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash -263666040, now seen corresponding path program 7 times [2024-06-27 20:42:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:00,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686580644] [2024-06-27 20:42:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686580644] [2024-06-27 20:42:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686580644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:00,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:00,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966713728] [2024-06-27 20:42:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:00,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:01,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:01,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 153 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:01,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:01,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:01,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:01,232 INFO L124 PetriNetUnfolderBase]: 448/799 cut-off events. [2024-06-27 20:42:01,232 INFO L125 PetriNetUnfolderBase]: For 36760/36760 co-relation queries the response was YES. [2024-06-27 20:42:01,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 799 events. 448/799 cut-off events. For 36760/36760 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3682 event pairs, 61 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5583. Up to 539 conditions per place. [2024-06-27 20:42:01,240 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 74 changer transitions 0/175 dead transitions. [2024-06-27 20:42:01,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 175 transitions, 2329 flow [2024-06-27 20:42:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:42:01,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:42:01,241 INFO L175 Difference]: Start difference. First operand has 174 places, 153 transitions, 1639 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:42:01,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 175 transitions, 2329 flow [2024-06-27 20:42:01,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 175 transitions, 2234 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:01,308 INFO L231 Difference]: Finished difference. Result has 176 places, 159 transitions, 1824 flow [2024-06-27 20:42:01,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=176, PETRI_TRANSITIONS=159} [2024-06-27 20:42:01,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 20:42:01,309 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 159 transitions, 1824 flow [2024-06-27 20:42:01,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:01,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:01,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:01,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:42:01,309 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:01,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -263659530, now seen corresponding path program 8 times [2024-06-27 20:42:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:01,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656190434] [2024-06-27 20:42:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:01,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656190434] [2024-06-27 20:42:01,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656190434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:01,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:01,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:01,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350585952] [2024-06-27 20:42:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:01,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:01,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:01,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:02,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:02,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 159 transitions, 1824 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:02,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:02,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:02,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:02,258 INFO L124 PetriNetUnfolderBase]: 444/793 cut-off events. [2024-06-27 20:42:02,258 INFO L125 PetriNetUnfolderBase]: For 36861/36861 co-relation queries the response was YES. [2024-06-27 20:42:02,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 793 events. 444/793 cut-off events. For 36861/36861 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3649 event pairs, 60 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 5596. Up to 536 conditions per place. [2024-06-27 20:42:02,263 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 82 changer transitions 0/174 dead transitions. [2024-06-27 20:42:02,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 174 transitions, 2306 flow [2024-06-27 20:42:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:42:02,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:42:02,264 INFO L175 Difference]: Start difference. First operand has 176 places, 159 transitions, 1824 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:42:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 174 transitions, 2306 flow [2024-06-27 20:42:02,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 2186 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 20:42:02,325 INFO L231 Difference]: Finished difference. Result has 180 places, 159 transitions, 1878 flow [2024-06-27 20:42:02,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1878, PETRI_PLACES=180, PETRI_TRANSITIONS=159} [2024-06-27 20:42:02,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-27 20:42:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 159 transitions, 1878 flow [2024-06-27 20:42:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:02,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:02,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:02,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:42:02,326 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:02,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -263659282, now seen corresponding path program 2 times [2024-06-27 20:42:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:02,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099544804] [2024-06-27 20:42:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:02,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099544804] [2024-06-27 20:42:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099544804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:02,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506287794] [2024-06-27 20:42:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:02,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:02,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:03,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:03,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 159 transitions, 1878 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:03,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:03,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:03,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:03,230 INFO L124 PetriNetUnfolderBase]: 447/798 cut-off events. [2024-06-27 20:42:03,231 INFO L125 PetriNetUnfolderBase]: For 35438/35438 co-relation queries the response was YES. [2024-06-27 20:42:03,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5796 conditions, 798 events. 447/798 cut-off events. For 35438/35438 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3687 event pairs, 116 based on Foata normal form. 1/799 useless extension candidates. Maximal degree in co-relation 5716. Up to 750 conditions per place. [2024-06-27 20:42:03,236 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2024-06-27 20:42:03,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 171 transitions, 2264 flow [2024-06-27 20:42:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-27 20:42:03,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:42:03,237 INFO L175 Difference]: Start difference. First operand has 180 places, 159 transitions, 1878 flow. Second operand 9 states and 90 transitions. [2024-06-27 20:42:03,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 171 transitions, 2264 flow [2024-06-27 20:42:03,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 171 transitions, 2119 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:03,297 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1821 flow [2024-06-27 20:42:03,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1821, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2024-06-27 20:42:03,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-27 20:42:03,298 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1821 flow [2024-06-27 20:42:03,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:03,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:03,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:03,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:42:03,298 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:03,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:03,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1611495324, now seen corresponding path program 9 times [2024-06-27 20:42:03,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:03,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839123197] [2024-06-27 20:42:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:04,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839123197] [2024-06-27 20:42:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839123197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:04,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563003890] [2024-06-27 20:42:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:04,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:04,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:42:04,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1821 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:04,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:04,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:42:04,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:04,455 INFO L124 PetriNetUnfolderBase]: 409/760 cut-off events. [2024-06-27 20:42:04,455 INFO L125 PetriNetUnfolderBase]: For 38127/38133 co-relation queries the response was YES. [2024-06-27 20:42:04,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5622 conditions, 760 events. 409/760 cut-off events. For 38127/38133 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3662 event pairs, 57 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 5542. Up to 590 conditions per place. [2024-06-27 20:42:04,459 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 115 selfloop transitions, 38 changer transitions 0/174 dead transitions. [2024-06-27 20:42:04,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 174 transitions, 2187 flow [2024-06-27 20:42:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:42:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:42:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 20:42:04,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:42:04,460 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1821 flow. Second operand 8 states and 94 transitions. [2024-06-27 20:42:04,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 174 transitions, 2187 flow [2024-06-27 20:42:04,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 174 transitions, 2119 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:04,517 INFO L231 Difference]: Finished difference. Result has 182 places, 162 transitions, 1861 flow [2024-06-27 20:42:04,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1861, PETRI_PLACES=182, PETRI_TRANSITIONS=162} [2024-06-27 20:42:04,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-27 20:42:04,518 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 162 transitions, 1861 flow [2024-06-27 20:42:04,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:04,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:04,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:04,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:42:04,518 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:04,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1611500284, now seen corresponding path program 9 times [2024-06-27 20:42:04,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:04,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085859244] [2024-06-27 20:42:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:05,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:05,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085859244] [2024-06-27 20:42:05,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085859244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:05,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:05,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:05,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953110510] [2024-06-27 20:42:05,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:05,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:05,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:05,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:05,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 162 transitions, 1861 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:05,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:05,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:05,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:05,462 INFO L124 PetriNetUnfolderBase]: 452/808 cut-off events. [2024-06-27 20:42:05,462 INFO L125 PetriNetUnfolderBase]: For 35753/35753 co-relation queries the response was YES. [2024-06-27 20:42:05,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 808 events. 452/808 cut-off events. For 35753/35753 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3752 event pairs, 76 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5676. Up to 552 conditions per place. [2024-06-27 20:42:05,469 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 70 changer transitions 0/179 dead transitions. [2024-06-27 20:42:05,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 179 transitions, 2395 flow [2024-06-27 20:42:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:42:05,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:42:05,471 INFO L175 Difference]: Start difference. First operand has 182 places, 162 transitions, 1861 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:42:05,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 179 transitions, 2395 flow [2024-06-27 20:42:05,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 179 transitions, 2297 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:05,534 INFO L231 Difference]: Finished difference. Result has 185 places, 164 transitions, 1955 flow [2024-06-27 20:42:05,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1955, PETRI_PLACES=185, PETRI_TRANSITIONS=164} [2024-06-27 20:42:05,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-27 20:42:05,534 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 164 transitions, 1955 flow [2024-06-27 20:42:05,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:05,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:05,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:05,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:42:05,534 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:05,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 29831038, now seen corresponding path program 10 times [2024-06-27 20:42:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559540065] [2024-06-27 20:42:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:06,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:06,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559540065] [2024-06-27 20:42:06,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559540065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:06,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:06,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:06,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781138313] [2024-06-27 20:42:06,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:06,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:06,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:06,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 164 transitions, 1955 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:06,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:06,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:06,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:06,498 INFO L124 PetriNetUnfolderBase]: 478/850 cut-off events. [2024-06-27 20:42:06,498 INFO L125 PetriNetUnfolderBase]: For 40194/40194 co-relation queries the response was YES. [2024-06-27 20:42:06,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6268 conditions, 850 events. 478/850 cut-off events. For 40194/40194 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3999 event pairs, 92 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 6186. Up to 498 conditions per place. [2024-06-27 20:42:06,504 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 105 selfloop transitions, 82 changer transitions 0/189 dead transitions. [2024-06-27 20:42:06,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2897 flow [2024-06-27 20:42:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 20:42:06,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 20:42:06,505 INFO L175 Difference]: Start difference. First operand has 185 places, 164 transitions, 1955 flow. Second operand 9 states and 109 transitions. [2024-06-27 20:42:06,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2897 flow [2024-06-27 20:42:06,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 189 transitions, 2762 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:06,562 INFO L231 Difference]: Finished difference. Result has 187 places, 172 transitions, 2161 flow [2024-06-27 20:42:06,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2161, PETRI_PLACES=187, PETRI_TRANSITIONS=172} [2024-06-27 20:42:06,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-27 20:42:06,562 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 172 transitions, 2161 flow [2024-06-27 20:42:06,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:06,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:06,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:06,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:42:06,563 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:06,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1777319156, now seen corresponding path program 3 times [2024-06-27 20:42:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:06,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583729004] [2024-06-27 20:42:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:06,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:07,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:07,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583729004] [2024-06-27 20:42:07,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583729004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:07,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:07,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:07,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965540870] [2024-06-27 20:42:07,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:07,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:07,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:07,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:07,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 172 transitions, 2161 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:07,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:07,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:07,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:07,524 INFO L124 PetriNetUnfolderBase]: 481/856 cut-off events. [2024-06-27 20:42:07,524 INFO L125 PetriNetUnfolderBase]: For 39859/39859 co-relation queries the response was YES. [2024-06-27 20:42:07,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 856 events. 481/856 cut-off events. For 39859/39859 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4048 event pairs, 127 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 6259. Up to 766 conditions per place. [2024-06-27 20:42:07,532 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-06-27 20:42:07,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 185 transitions, 2683 flow [2024-06-27 20:42:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:42:07,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:42:07,533 INFO L175 Difference]: Start difference. First operand has 187 places, 172 transitions, 2161 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:42:07,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 185 transitions, 2683 flow [2024-06-27 20:42:07,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 185 transitions, 2502 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 20:42:07,612 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 2109 flow [2024-06-27 20:42:07,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2109, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2024-06-27 20:42:07,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 20:42:07,613 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 2109 flow [2024-06-27 20:42:07,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:07,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:07,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:42:07,613 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:07,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 29653098, now seen corresponding path program 10 times [2024-06-27 20:42:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034043639] [2024-06-27 20:42:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:08,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034043639] [2024-06-27 20:42:08,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034043639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:08,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:08,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:08,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66510137] [2024-06-27 20:42:08,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:08,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:08,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:08,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:42:08,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 176 transitions, 2109 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:08,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:08,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:42:08,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:08,679 INFO L124 PetriNetUnfolderBase]: 426/791 cut-off events. [2024-06-27 20:42:08,679 INFO L125 PetriNetUnfolderBase]: For 40329/40337 co-relation queries the response was YES. [2024-06-27 20:42:08,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 791 events. 426/791 cut-off events. For 40329/40337 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3885 event pairs, 64 based on Foata normal form. 2/784 useless extension candidates. Maximal degree in co-relation 5775. Up to 614 conditions per place. [2024-06-27 20:42:08,688 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 126 selfloop transitions, 39 changer transitions 0/186 dead transitions. [2024-06-27 20:42:08,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 186 transitions, 2469 flow [2024-06-27 20:42:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:42:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:42:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:42:08,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:42:08,689 INFO L175 Difference]: Start difference. First operand has 192 places, 176 transitions, 2109 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:42:08,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 186 transitions, 2469 flow [2024-06-27 20:42:08,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 186 transitions, 2416 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 20:42:08,754 INFO L231 Difference]: Finished difference. Result has 195 places, 176 transitions, 2138 flow [2024-06-27 20:42:08,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2138, PETRI_PLACES=195, PETRI_TRANSITIONS=176} [2024-06-27 20:42:08,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-27 20:42:08,754 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 176 transitions, 2138 flow [2024-06-27 20:42:08,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:08,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:08,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:08,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:42:08,755 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:08,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash 51586678, now seen corresponding path program 11 times [2024-06-27 20:42:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176389022] [2024-06-27 20:42:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176389022] [2024-06-27 20:42:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176389022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730355453] [2024-06-27 20:42:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:09,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:09,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 176 transitions, 2138 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:09,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:09,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:09,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:09,682 INFO L124 PetriNetUnfolderBase]: 484/861 cut-off events. [2024-06-27 20:42:09,682 INFO L125 PetriNetUnfolderBase]: For 41396/41396 co-relation queries the response was YES. [2024-06-27 20:42:09,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6277 conditions, 861 events. 484/861 cut-off events. For 41396/41396 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4056 event pairs, 71 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 6192. Up to 504 conditions per place. [2024-06-27 20:42:09,688 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 95 changer transitions 0/192 dead transitions. [2024-06-27 20:42:09,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 192 transitions, 2786 flow [2024-06-27 20:42:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:42:09,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:42:09,689 INFO L175 Difference]: Start difference. First operand has 195 places, 176 transitions, 2138 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:42:09,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 192 transitions, 2786 flow [2024-06-27 20:42:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 192 transitions, 2652 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:09,759 INFO L231 Difference]: Finished difference. Result has 197 places, 178 transitions, 2237 flow [2024-06-27 20:42:09,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2237, PETRI_PLACES=197, PETRI_TRANSITIONS=178} [2024-06-27 20:42:09,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 20:42:09,760 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 178 transitions, 2237 flow [2024-06-27 20:42:09,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:09,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:09,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:42:09,760 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:09,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1611059252, now seen corresponding path program 4 times [2024-06-27 20:42:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699007028] [2024-06-27 20:42:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:10,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:10,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699007028] [2024-06-27 20:42:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699007028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:10,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:10,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:10,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379088982] [2024-06-27 20:42:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:10,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:10,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 178 transitions, 2237 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:10,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:10,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:10,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:10,796 INFO L124 PetriNetUnfolderBase]: 487/866 cut-off events. [2024-06-27 20:42:10,797 INFO L125 PetriNetUnfolderBase]: For 42191/42191 co-relation queries the response was YES. [2024-06-27 20:42:10,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 866 events. 487/866 cut-off events. For 42191/42191 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4085 event pairs, 126 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6343. Up to 775 conditions per place. [2024-06-27 20:42:10,802 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 40 changer transitions 0/189 dead transitions. [2024-06-27 20:42:10,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 2753 flow [2024-06-27 20:42:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 20:42:10,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-27 20:42:10,803 INFO L175 Difference]: Start difference. First operand has 197 places, 178 transitions, 2237 flow. Second operand 9 states and 95 transitions. [2024-06-27 20:42:10,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 2753 flow [2024-06-27 20:42:10,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 189 transitions, 2503 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:10,872 INFO L231 Difference]: Finished difference. Result has 198 places, 180 transitions, 2100 flow [2024-06-27 20:42:10,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=198, PETRI_TRANSITIONS=180} [2024-06-27 20:42:10,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 20:42:10,873 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 180 transitions, 2100 flow [2024-06-27 20:42:10,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:10,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:10,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:10,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:42:10,873 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:10,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:10,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1838960650, now seen corresponding path program 12 times [2024-06-27 20:42:10,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:10,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440507123] [2024-06-27 20:42:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:10,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:11,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:11,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440507123] [2024-06-27 20:42:11,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440507123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:11,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:11,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851224435] [2024-06-27 20:42:11,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:11,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:11,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:11,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:11,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 180 transitions, 2100 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:11,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:11,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:11,826 INFO L124 PetriNetUnfolderBase]: 483/860 cut-off events. [2024-06-27 20:42:11,827 INFO L125 PetriNetUnfolderBase]: For 41684/41684 co-relation queries the response was YES. [2024-06-27 20:42:11,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6060 conditions, 860 events. 483/860 cut-off events. For 41684/41684 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4071 event pairs, 90 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 5974. Up to 506 conditions per place. [2024-06-27 20:42:11,835 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 85 changer transitions 0/196 dead transitions. [2024-06-27 20:42:11,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 196 transitions, 2830 flow [2024-06-27 20:42:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 20:42:11,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 20:42:11,837 INFO L175 Difference]: Start difference. First operand has 198 places, 180 transitions, 2100 flow. Second operand 9 states and 107 transitions. [2024-06-27 20:42:11,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 196 transitions, 2830 flow [2024-06-27 20:42:11,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 196 transitions, 2702 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:11,912 INFO L231 Difference]: Finished difference. Result has 200 places, 180 transitions, 2147 flow [2024-06-27 20:42:11,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=200, PETRI_TRANSITIONS=180} [2024-06-27 20:42:11,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 20:42:11,913 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 180 transitions, 2147 flow [2024-06-27 20:42:11,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:11,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:11,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:11,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:42:11,914 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:11,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1839140140, now seen corresponding path program 13 times [2024-06-27 20:42:11,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:11,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985009949] [2024-06-27 20:42:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985009949] [2024-06-27 20:42:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985009949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994851679] [2024-06-27 20:42:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:12,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:12,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:12,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 180 transitions, 2147 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:12,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:12,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:12,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:12,895 INFO L124 PetriNetUnfolderBase]: 479/854 cut-off events. [2024-06-27 20:42:12,895 INFO L125 PetriNetUnfolderBase]: For 41188/41188 co-relation queries the response was YES. [2024-06-27 20:42:12,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 854 events. 479/854 cut-off events. For 41188/41188 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4052 event pairs, 92 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5958. Up to 503 conditions per place. [2024-06-27 20:42:12,901 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 105 selfloop transitions, 87 changer transitions 0/194 dead transitions. [2024-06-27 20:42:12,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 194 transitions, 2773 flow [2024-06-27 20:42:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 20:42:12,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 20:42:12,902 INFO L175 Difference]: Start difference. First operand has 200 places, 180 transitions, 2147 flow. Second operand 9 states and 104 transitions. [2024-06-27 20:42:12,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 194 transitions, 2773 flow [2024-06-27 20:42:12,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 194 transitions, 2579 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:12,971 INFO L231 Difference]: Finished difference. Result has 202 places, 180 transitions, 2132 flow [2024-06-27 20:42:12,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2132, PETRI_PLACES=202, PETRI_TRANSITIONS=180} [2024-06-27 20:42:12,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:42:12,972 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 180 transitions, 2132 flow [2024-06-27 20:42:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:12,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:12,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:42:12,972 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:12,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash 51593188, now seen corresponding path program 14 times [2024-06-27 20:42:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457342058] [2024-06-27 20:42:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:13,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:13,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457342058] [2024-06-27 20:42:13,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457342058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:13,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620244311] [2024-06-27 20:42:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:13,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:13,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 180 transitions, 2132 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:13,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:13,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:13,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:13,949 INFO L124 PetriNetUnfolderBase]: 485/864 cut-off events. [2024-06-27 20:42:13,949 INFO L125 PetriNetUnfolderBase]: For 42805/42805 co-relation queries the response was YES. [2024-06-27 20:42:13,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6126 conditions, 864 events. 485/864 cut-off events. For 42805/42805 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4092 event pairs, 70 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 6038. Up to 509 conditions per place. [2024-06-27 20:42:13,955 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 96 changer transitions 0/197 dead transitions. [2024-06-27 20:42:13,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 197 transitions, 2814 flow [2024-06-27 20:42:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 20:42:13,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:42:13,956 INFO L175 Difference]: Start difference. First operand has 202 places, 180 transitions, 2132 flow. Second operand 9 states and 105 transitions. [2024-06-27 20:42:13,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 197 transitions, 2814 flow [2024-06-27 20:42:14,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 197 transitions, 2620 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:14,035 INFO L231 Difference]: Finished difference. Result has 202 places, 182 transitions, 2175 flow [2024-06-27 20:42:14,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2175, PETRI_PLACES=202, PETRI_TRANSITIONS=182} [2024-06-27 20:42:14,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:42:14,036 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 182 transitions, 2175 flow [2024-06-27 20:42:14,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:14,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:14,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:42:14,036 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 59867646, now seen corresponding path program 5 times [2024-06-27 20:42:14,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:14,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659781371] [2024-06-27 20:42:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:14,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:14,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:14,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659781371] [2024-06-27 20:42:14,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659781371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:14,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:14,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22252475] [2024-06-27 20:42:14,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:14,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:14,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:14,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 182 transitions, 2175 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:14,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:14,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:14,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:14,994 INFO L124 PetriNetUnfolderBase]: 488/869 cut-off events. [2024-06-27 20:42:14,995 INFO L125 PetriNetUnfolderBase]: For 43194/43194 co-relation queries the response was YES. [2024-06-27 20:42:15,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 869 events. 488/869 cut-off events. For 43194/43194 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4138 event pairs, 124 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 6116. Up to 777 conditions per place. [2024-06-27 20:42:15,002 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 45 changer transitions 0/193 dead transitions. [2024-06-27 20:42:15,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 193 transitions, 2707 flow [2024-06-27 20:42:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 20:42:15,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-27 20:42:15,004 INFO L175 Difference]: Start difference. First operand has 202 places, 182 transitions, 2175 flow. Second operand 9 states and 94 transitions. [2024-06-27 20:42:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 193 transitions, 2707 flow [2024-06-27 20:42:15,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 193 transitions, 2498 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:15,087 INFO L231 Difference]: Finished difference. Result has 205 places, 184 transitions, 2089 flow [2024-06-27 20:42:15,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2089, PETRI_PLACES=205, PETRI_TRANSITIONS=184} [2024-06-27 20:42:15,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 20:42:15,087 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 184 transitions, 2089 flow [2024-06-27 20:42:15,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:15,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:15,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:15,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:42:15,088 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:15,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash 60164316, now seen corresponding path program 6 times [2024-06-27 20:42:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:15,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305183608] [2024-06-27 20:42:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:15,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305183608] [2024-06-27 20:42:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305183608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:15,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123068257] [2024-06-27 20:42:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:15,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:15,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:15,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 184 transitions, 2089 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:15,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:15,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:15,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:16,224 INFO L124 PetriNetUnfolderBase]: 486/865 cut-off events. [2024-06-27 20:42:16,224 INFO L125 PetriNetUnfolderBase]: For 42706/42706 co-relation queries the response was YES. [2024-06-27 20:42:16,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5985 conditions, 865 events. 486/865 cut-off events. For 42706/42706 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4118 event pairs, 163 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 5895. Up to 837 conditions per place. [2024-06-27 20:42:16,230 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 15 changer transitions 0/192 dead transitions. [2024-06-27 20:42:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 192 transitions, 2487 flow [2024-06-27 20:42:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 20:42:16,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:42:16,231 INFO L175 Difference]: Start difference. First operand has 205 places, 184 transitions, 2089 flow. Second operand 9 states and 87 transitions. [2024-06-27 20:42:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 192 transitions, 2487 flow [2024-06-27 20:42:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 192 transitions, 2358 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:16,319 INFO L231 Difference]: Finished difference. Result has 207 places, 184 transitions, 1995 flow [2024-06-27 20:42:16,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1995, PETRI_PLACES=207, PETRI_TRANSITIONS=184} [2024-06-27 20:42:16,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 20:42:16,320 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 184 transitions, 1995 flow [2024-06-27 20:42:16,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:16,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:16,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:16,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:42:16,320 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:16,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 59867398, now seen corresponding path program 15 times [2024-06-27 20:42:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254790162] [2024-06-27 20:42:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254790162] [2024-06-27 20:42:17,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254790162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:17,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:17,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109618297] [2024-06-27 20:42:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:17,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:17,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:17,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:17,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 184 transitions, 1995 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:17,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:17,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:17,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:17,271 INFO L124 PetriNetUnfolderBase]: 482/859 cut-off events. [2024-06-27 20:42:17,271 INFO L125 PetriNetUnfolderBase]: For 42591/42591 co-relation queries the response was YES. [2024-06-27 20:42:17,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5780 conditions, 859 events. 482/859 cut-off events. For 42591/42591 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4079 event pairs, 63 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 5689. Up to 508 conditions per place. [2024-06-27 20:42:17,277 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 111 changer transitions 0/197 dead transitions. [2024-06-27 20:42:17,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2535 flow [2024-06-27 20:42:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 20:42:17,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 20:42:17,278 INFO L175 Difference]: Start difference. First operand has 207 places, 184 transitions, 1995 flow. Second operand 9 states and 101 transitions. [2024-06-27 20:42:17,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2535 flow [2024-06-27 20:42:17,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 197 transitions, 2474 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:17,364 INFO L231 Difference]: Finished difference. Result has 208 places, 184 transitions, 2161 flow [2024-06-27 20:42:17,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2161, PETRI_PLACES=208, PETRI_TRANSITIONS=184} [2024-06-27 20:42:17,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-27 20:42:17,365 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 184 transitions, 2161 flow [2024-06-27 20:42:17,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:17,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:17,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:17,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:42:17,365 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:17,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:17,366 INFO L85 PathProgramCache]: Analyzing trace with hash 60175228, now seen corresponding path program 1 times [2024-06-27 20:42:17,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:17,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497837407] [2024-06-27 20:42:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:17,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:18,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497837407] [2024-06-27 20:42:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497837407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:18,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351907382] [2024-06-27 20:42:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:18,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:18,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:18,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 184 transitions, 2161 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:18,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:18,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:18,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:18,780 INFO L124 PetriNetUnfolderBase]: 479/854 cut-off events. [2024-06-27 20:42:18,780 INFO L125 PetriNetUnfolderBase]: For 41590/41590 co-relation queries the response was YES. [2024-06-27 20:42:18,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 854 events. 479/854 cut-off events. For 41590/41590 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4076 event pairs, 161 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5820. Up to 820 conditions per place. [2024-06-27 20:42:18,786 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2024-06-27 20:42:18,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 194 transitions, 2567 flow [2024-06-27 20:42:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 20:42:18,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-27 20:42:18,786 INFO L175 Difference]: Start difference. First operand has 208 places, 184 transitions, 2161 flow. Second operand 10 states and 94 transitions. [2024-06-27 20:42:18,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 194 transitions, 2567 flow [2024-06-27 20:42:18,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 194 transitions, 2329 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:18,863 INFO L231 Difference]: Finished difference. Result has 209 places, 184 transitions, 1959 flow [2024-06-27 20:42:18,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=209, PETRI_TRANSITIONS=184} [2024-06-27 20:42:18,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-27 20:42:18,863 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 184 transitions, 1959 flow [2024-06-27 20:42:18,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:18,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:18,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:18,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:42:18,864 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:18,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -64279874, now seen corresponding path program 1 times [2024-06-27 20:42:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:18,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443915818] [2024-06-27 20:42:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:18,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:19,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443915818] [2024-06-27 20:42:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443915818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:19,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609121753] [2024-06-27 20:42:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:19,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:19,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:19,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 184 transitions, 1959 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:19,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:19,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:19,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:20,122 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-06-27 20:42:20,122 INFO L125 PetriNetUnfolderBase]: For 42877/42877 co-relation queries the response was YES. [2024-06-27 20:42:20,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5718 conditions, 862 events. 483/862 cut-off events. For 42877/42877 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4111 event pairs, 76 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5625. Up to 742 conditions per place. [2024-06-27 20:42:20,131 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-27 20:42:20,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 203 transitions, 2421 flow [2024-06-27 20:42:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:42:20,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-27 20:42:20,132 INFO L175 Difference]: Start difference. First operand has 209 places, 184 transitions, 1959 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:42:20,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 203 transitions, 2421 flow [2024-06-27 20:42:20,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 203 transitions, 2381 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:20,236 INFO L231 Difference]: Finished difference. Result has 211 places, 185 transitions, 1993 flow [2024-06-27 20:42:20,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1993, PETRI_PLACES=211, PETRI_TRANSITIONS=185} [2024-06-27 20:42:20,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-27 20:42:20,236 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 185 transitions, 1993 flow [2024-06-27 20:42:20,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:20,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:20,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:42:20,237 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:20,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1661801260, now seen corresponding path program 2 times [2024-06-27 20:42:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:20,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994518102] [2024-06-27 20:42:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994518102] [2024-06-27 20:42:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994518102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:20,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529855873] [2024-06-27 20:42:20,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:20,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:21,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:21,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 185 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:21,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:21,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:21,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:21,303 INFO L124 PetriNetUnfolderBase]: 487/870 cut-off events. [2024-06-27 20:42:21,303 INFO L125 PetriNetUnfolderBase]: For 44067/44067 co-relation queries the response was YES. [2024-06-27 20:42:21,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5821 conditions, 870 events. 487/870 cut-off events. For 44067/44067 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4156 event pairs, 111 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 5727. Up to 785 conditions per place. [2024-06-27 20:42:21,309 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 24 changer transitions 0/204 dead transitions. [2024-06-27 20:42:21,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 204 transitions, 2461 flow [2024-06-27 20:42:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:42:21,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:42:21,310 INFO L175 Difference]: Start difference. First operand has 211 places, 185 transitions, 1993 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:42:21,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 204 transitions, 2461 flow [2024-06-27 20:42:21,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 204 transitions, 2397 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:21,402 INFO L231 Difference]: Finished difference. Result has 213 places, 186 transitions, 2001 flow [2024-06-27 20:42:21,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=213, PETRI_TRANSITIONS=186} [2024-06-27 20:42:21,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-27 20:42:21,403 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 186 transitions, 2001 flow [2024-06-27 20:42:21,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:21,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:21,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:21,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:42:21,404 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:21,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1306917360, now seen corresponding path program 3 times [2024-06-27 20:42:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:21,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655044049] [2024-06-27 20:42:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:22,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655044049] [2024-06-27 20:42:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655044049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41528587] [2024-06-27 20:42:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:22,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:22,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 186 transitions, 2001 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:22,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:22,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:22,627 INFO L124 PetriNetUnfolderBase]: 498/891 cut-off events. [2024-06-27 20:42:22,628 INFO L125 PetriNetUnfolderBase]: For 49675/49675 co-relation queries the response was YES. [2024-06-27 20:42:22,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 891 events. 498/891 cut-off events. For 49675/49675 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4308 event pairs, 108 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 5972. Up to 785 conditions per place. [2024-06-27 20:42:22,636 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 30 changer transitions 0/206 dead transitions. [2024-06-27 20:42:22,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 206 transitions, 2611 flow [2024-06-27 20:42:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:42:22,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:42:22,638 INFO L175 Difference]: Start difference. First operand has 213 places, 186 transitions, 2001 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:42:22,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 206 transitions, 2611 flow [2024-06-27 20:42:22,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 206 transitions, 2549 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:22,747 INFO L231 Difference]: Finished difference. Result has 215 places, 188 transitions, 2045 flow [2024-06-27 20:42:22,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2045, PETRI_PLACES=215, PETRI_TRANSITIONS=188} [2024-06-27 20:42:22,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-27 20:42:22,748 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 188 transitions, 2045 flow [2024-06-27 20:42:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:22,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:22,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:42:22,748 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:22,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1306614955, now seen corresponding path program 2 times [2024-06-27 20:42:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795538243] [2024-06-27 20:42:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:23,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:23,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795538243] [2024-06-27 20:42:23,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795538243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:23,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331460225] [2024-06-27 20:42:23,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:23,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:23,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:23,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 188 transitions, 2045 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:23,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:23,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:23,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:23,880 INFO L124 PetriNetUnfolderBase]: 496/888 cut-off events. [2024-06-27 20:42:23,880 INFO L125 PetriNetUnfolderBase]: For 48019/48019 co-relation queries the response was YES. [2024-06-27 20:42:23,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6009 conditions, 888 events. 496/888 cut-off events. For 48019/48019 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4299 event pairs, 109 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 5913. Up to 798 conditions per place. [2024-06-27 20:42:23,886 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 33 changer transitions 0/205 dead transitions. [2024-06-27 20:42:23,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 205 transitions, 2505 flow [2024-06-27 20:42:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:42:23,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:42:23,888 INFO L175 Difference]: Start difference. First operand has 215 places, 188 transitions, 2045 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:42:23,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 205 transitions, 2505 flow [2024-06-27 20:42:23,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 205 transitions, 2430 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:23,998 INFO L231 Difference]: Finished difference. Result has 219 places, 188 transitions, 2044 flow [2024-06-27 20:42:23,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=219, PETRI_TRANSITIONS=188} [2024-06-27 20:42:23,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-27 20:42:23,999 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 188 transitions, 2044 flow [2024-06-27 20:42:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:23,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:42:23,999 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:23,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1658995450, now seen corresponding path program 4 times [2024-06-27 20:42:23,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:23,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103023742] [2024-06-27 20:42:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:24,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:24,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103023742] [2024-06-27 20:42:24,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103023742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:24,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:24,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:24,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180969489] [2024-06-27 20:42:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:24,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:24,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:24,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 188 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:24,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:24,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:24,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:25,205 INFO L124 PetriNetUnfolderBase]: 493/883 cut-off events. [2024-06-27 20:42:25,205 INFO L125 PetriNetUnfolderBase]: For 47349/47349 co-relation queries the response was YES. [2024-06-27 20:42:25,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 883 events. 493/883 cut-off events. For 47349/47349 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4264 event pairs, 109 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5796. Up to 796 conditions per place. [2024-06-27 20:42:25,211 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-27 20:42:25,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 205 transitions, 2500 flow [2024-06-27 20:42:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:42:25,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:42:25,212 INFO L175 Difference]: Start difference. First operand has 219 places, 188 transitions, 2044 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:42:25,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 205 transitions, 2500 flow [2024-06-27 20:42:25,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 205 transitions, 2342 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-27 20:42:25,312 INFO L231 Difference]: Finished difference. Result has 218 places, 188 transitions, 1951 flow [2024-06-27 20:42:25,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1951, PETRI_PLACES=218, PETRI_TRANSITIONS=188} [2024-06-27 20:42:25,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 20:42:25,313 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 188 transitions, 1951 flow [2024-06-27 20:42:25,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:25,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:25,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:25,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:42:25,313 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:25,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1010794266, now seen corresponding path program 1 times [2024-06-27 20:42:25,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:25,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996388532] [2024-06-27 20:42:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:25,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:25,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996388532] [2024-06-27 20:42:25,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996388532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:25,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:25,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:25,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197600254] [2024-06-27 20:42:25,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:25,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:25,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:25,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:25,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:26,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:26,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 188 transitions, 1951 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:26,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:26,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:26,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:26,311 INFO L124 PetriNetUnfolderBase]: 499/893 cut-off events. [2024-06-27 20:42:26,311 INFO L125 PetriNetUnfolderBase]: For 47093/47093 co-relation queries the response was YES. [2024-06-27 20:42:26,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 893 events. 499/893 cut-off events. For 47093/47093 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4322 event pairs, 86 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 5770. Up to 804 conditions per place. [2024-06-27 20:42:26,317 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 176 selfloop transitions, 31 changer transitions 0/209 dead transitions. [2024-06-27 20:42:26,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 209 transitions, 2461 flow [2024-06-27 20:42:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 20:42:26,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 20:42:26,318 INFO L175 Difference]: Start difference. First operand has 218 places, 188 transitions, 1951 flow. Second operand 11 states and 115 transitions. [2024-06-27 20:42:26,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 209 transitions, 2461 flow [2024-06-27 20:42:26,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 209 transitions, 2398 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:26,416 INFO L231 Difference]: Finished difference. Result has 220 places, 190 transitions, 1993 flow [2024-06-27 20:42:26,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=220, PETRI_TRANSITIONS=190} [2024-06-27 20:42:26,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-27 20:42:26,416 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 190 transitions, 1993 flow [2024-06-27 20:42:26,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:26,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:26,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:26,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:42:26,417 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:26,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1093795398, now seen corresponding path program 5 times [2024-06-27 20:42:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:26,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730214461] [2024-06-27 20:42:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:27,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:27,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730214461] [2024-06-27 20:42:27,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730214461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:27,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:27,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:27,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288134083] [2024-06-27 20:42:27,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:27,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:27,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:27,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:27,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:27,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 190 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:27,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:27,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:27,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:27,570 INFO L124 PetriNetUnfolderBase]: 503/901 cut-off events. [2024-06-27 20:42:27,570 INFO L125 PetriNetUnfolderBase]: For 48655/48655 co-relation queries the response was YES. [2024-06-27 20:42:27,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5986 conditions, 901 events. 503/901 cut-off events. For 48655/48655 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4366 event pairs, 86 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 5886. Up to 816 conditions per place. [2024-06-27 20:42:27,576 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 23 changer transitions 0/208 dead transitions. [2024-06-27 20:42:27,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 208 transitions, 2471 flow [2024-06-27 20:42:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:42:27,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:42:27,577 INFO L175 Difference]: Start difference. First operand has 220 places, 190 transitions, 1993 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:42:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 208 transitions, 2471 flow [2024-06-27 20:42:27,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 208 transitions, 2382 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:27,682 INFO L231 Difference]: Finished difference. Result has 221 places, 191 transitions, 1978 flow [2024-06-27 20:42:27,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1978, PETRI_PLACES=221, PETRI_TRANSITIONS=191} [2024-06-27 20:42:27,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-27 20:42:27,682 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 191 transitions, 1978 flow [2024-06-27 20:42:27,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:27,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:27,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:27,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:42:27,683 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:27,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2053121564, now seen corresponding path program 6 times [2024-06-27 20:42:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:27,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047230718] [2024-06-27 20:42:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047230718] [2024-06-27 20:42:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047230718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:28,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:28,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:28,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087380271] [2024-06-27 20:42:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:28,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:28,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:28,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:28,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 191 transitions, 1978 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:28,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:28,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:28,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:28,849 INFO L124 PetriNetUnfolderBase]: 514/922 cut-off events. [2024-06-27 20:42:28,849 INFO L125 PetriNetUnfolderBase]: For 54528/54528 co-relation queries the response was YES. [2024-06-27 20:42:28,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6237 conditions, 922 events. 514/922 cut-off events. For 54528/54528 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4533 event pairs, 87 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6136. Up to 816 conditions per place. [2024-06-27 20:42:28,855 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 29 changer transitions 0/210 dead transitions. [2024-06-27 20:42:28,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 210 transitions, 2610 flow [2024-06-27 20:42:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:42:28,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:42:28,856 INFO L175 Difference]: Start difference. First operand has 221 places, 191 transitions, 1978 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:42:28,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 210 transitions, 2610 flow [2024-06-27 20:42:28,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 210 transitions, 2546 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:28,977 INFO L231 Difference]: Finished difference. Result has 223 places, 193 transitions, 2026 flow [2024-06-27 20:42:28,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2026, PETRI_PLACES=223, PETRI_TRANSITIONS=193} [2024-06-27 20:42:28,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 20:42:28,978 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 193 transitions, 2026 flow [2024-06-27 20:42:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:28,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:28,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:28,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:42:28,978 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:28,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1970008394, now seen corresponding path program 7 times [2024-06-27 20:42:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:28,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330430477] [2024-06-27 20:42:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:28,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330430477] [2024-06-27 20:42:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330430477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:29,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286843450] [2024-06-27 20:42:29,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:29,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:29,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 193 transitions, 2026 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:29,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:29,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:29,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:30,234 INFO L124 PetriNetUnfolderBase]: 511/917 cut-off events. [2024-06-27 20:42:30,234 INFO L125 PetriNetUnfolderBase]: For 52371/52371 co-relation queries the response was YES. [2024-06-27 20:42:30,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6096 conditions, 917 events. 511/917 cut-off events. For 52371/52371 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4501 event pairs, 86 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 5994. Up to 830 conditions per place. [2024-06-27 20:42:30,244 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 29 changer transitions 0/209 dead transitions. [2024-06-27 20:42:30,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 209 transitions, 2488 flow [2024-06-27 20:42:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:42:30,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:42:30,245 INFO L175 Difference]: Start difference. First operand has 223 places, 193 transitions, 2026 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:42:30,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 209 transitions, 2488 flow [2024-06-27 20:42:30,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 209 transitions, 2409 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:30,362 INFO L231 Difference]: Finished difference. Result has 227 places, 193 transitions, 2010 flow [2024-06-27 20:42:30,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2010, PETRI_PLACES=227, PETRI_TRANSITIONS=193} [2024-06-27 20:42:30,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-27 20:42:30,363 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 193 transitions, 2010 flow [2024-06-27 20:42:30,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:30,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:30,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:42:30,363 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:30,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2056850306, now seen corresponding path program 2 times [2024-06-27 20:42:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:30,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628562422] [2024-06-27 20:42:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:31,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628562422] [2024-06-27 20:42:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628562422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:31,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:31,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160361090] [2024-06-27 20:42:31,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:31,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:31,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:31,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:31,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 193 transitions, 2010 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:31,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:31,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:31,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:31,627 INFO L124 PetriNetUnfolderBase]: 517/927 cut-off events. [2024-06-27 20:42:31,627 INFO L125 PetriNetUnfolderBase]: For 53483/53483 co-relation queries the response was YES. [2024-06-27 20:42:31,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6153 conditions, 927 events. 517/927 cut-off events. For 53483/53483 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4545 event pairs, 88 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 6049. Up to 838 conditions per place. [2024-06-27 20:42:31,634 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 182 selfloop transitions, 29 changer transitions 0/213 dead transitions. [2024-06-27 20:42:31,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 213 transitions, 2530 flow [2024-06-27 20:42:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:42:31,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:42:31,635 INFO L175 Difference]: Start difference. First operand has 227 places, 193 transitions, 2010 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:42:31,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 213 transitions, 2530 flow [2024-06-27 20:42:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 213 transitions, 2469 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:31,759 INFO L231 Difference]: Finished difference. Result has 229 places, 195 transitions, 2054 flow [2024-06-27 20:42:31,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2054, PETRI_PLACES=229, PETRI_TRANSITIONS=195} [2024-06-27 20:42:31,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-27 20:42:31,760 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 195 transitions, 2054 flow [2024-06-27 20:42:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:31,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:31,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:31,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:42:31,761 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:31,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash -406215652, now seen corresponding path program 8 times [2024-06-27 20:42:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623838260] [2024-06-27 20:42:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623838260] [2024-06-27 20:42:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623838260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:32,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505466658] [2024-06-27 20:42:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:32,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:32,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 195 transitions, 2054 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:32,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:32,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:32,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:32,974 INFO L124 PetriNetUnfolderBase]: 521/935 cut-off events. [2024-06-27 20:42:32,974 INFO L125 PetriNetUnfolderBase]: For 55644/55644 co-relation queries the response was YES. [2024-06-27 20:42:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 935 events. 521/935 cut-off events. For 55644/55644 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4621 event pairs, 78 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 6166. Up to 804 conditions per place. [2024-06-27 20:42:32,982 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 45 changer transitions 0/212 dead transitions. [2024-06-27 20:42:32,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 212 transitions, 2550 flow [2024-06-27 20:42:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:32,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:42:32,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:42:32,983 INFO L175 Difference]: Start difference. First operand has 229 places, 195 transitions, 2054 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:42:32,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 212 transitions, 2550 flow [2024-06-27 20:42:33,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 212 transitions, 2461 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:33,126 INFO L231 Difference]: Finished difference. Result has 230 places, 196 transitions, 2087 flow [2024-06-27 20:42:33,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2087, PETRI_PLACES=230, PETRI_TRANSITIONS=196} [2024-06-27 20:42:33,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 20:42:33,127 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 196 transitions, 2087 flow [2024-06-27 20:42:33,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:33,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:33,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:42:33,128 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:33,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash -406000171, now seen corresponding path program 1 times [2024-06-27 20:42:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917728497] [2024-06-27 20:42:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:33,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917728497] [2024-06-27 20:42:33,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917728497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:33,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:33,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681474715] [2024-06-27 20:42:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:33,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:34,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:34,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 196 transitions, 2087 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:34,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:34,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:34,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:34,367 INFO L124 PetriNetUnfolderBase]: 542/970 cut-off events. [2024-06-27 20:42:34,367 INFO L125 PetriNetUnfolderBase]: For 63756/63756 co-relation queries the response was YES. [2024-06-27 20:42:34,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 970 events. 542/970 cut-off events. For 63756/63756 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4808 event pairs, 75 based on Foata normal form. 3/973 useless extension candidates. Maximal degree in co-relation 6552. Up to 732 conditions per place. [2024-06-27 20:42:34,373 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 150 selfloop transitions, 68 changer transitions 0/220 dead transitions. [2024-06-27 20:42:34,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 220 transitions, 2813 flow [2024-06-27 20:42:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:42:34,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:42:34,374 INFO L175 Difference]: Start difference. First operand has 230 places, 196 transitions, 2087 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:42:34,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 220 transitions, 2813 flow [2024-06-27 20:42:34,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 220 transitions, 2701 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:34,524 INFO L231 Difference]: Finished difference. Result has 234 places, 201 transitions, 2239 flow [2024-06-27 20:42:34,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=234, PETRI_TRANSITIONS=201} [2024-06-27 20:42:34,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-27 20:42:34,524 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 201 transitions, 2239 flow [2024-06-27 20:42:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:34,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:34,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:34,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:42:34,525 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:34,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash -406209700, now seen corresponding path program 3 times [2024-06-27 20:42:34,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:34,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876616515] [2024-06-27 20:42:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:35,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876616515] [2024-06-27 20:42:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876616515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:35,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389399466] [2024-06-27 20:42:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:35,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:35,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:35,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 201 transitions, 2239 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:35,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:35,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:35,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:35,601 INFO L124 PetriNetUnfolderBase]: 568/1012 cut-off events. [2024-06-27 20:42:35,602 INFO L125 PetriNetUnfolderBase]: For 72085/72085 co-relation queries the response was YES. [2024-06-27 20:42:35,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 1012 events. 568/1012 cut-off events. For 72085/72085 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5029 event pairs, 79 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 7257. Up to 744 conditions per place. [2024-06-27 20:42:35,610 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 165 selfloop transitions, 60 changer transitions 0/227 dead transitions. [2024-06-27 20:42:35,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 227 transitions, 3155 flow [2024-06-27 20:42:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:42:35,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:42:35,611 INFO L175 Difference]: Start difference. First operand has 234 places, 201 transitions, 2239 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:42:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 227 transitions, 3155 flow [2024-06-27 20:42:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 227 transitions, 3013 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:35,773 INFO L231 Difference]: Finished difference. Result has 239 places, 207 transitions, 2375 flow [2024-06-27 20:42:35,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2375, PETRI_PLACES=239, PETRI_TRANSITIONS=207} [2024-06-27 20:42:35,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-27 20:42:35,773 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 207 transitions, 2375 flow [2024-06-27 20:42:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:35,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:35,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:42:35,774 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:35,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash -406000450, now seen corresponding path program 4 times [2024-06-27 20:42:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571714933] [2024-06-27 20:42:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:36,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571714933] [2024-06-27 20:42:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571714933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:36,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:36,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653036370] [2024-06-27 20:42:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:36,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:36,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:36,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 207 transitions, 2375 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:36,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:36,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:36,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:36,828 INFO L124 PetriNetUnfolderBase]: 570/1016 cut-off events. [2024-06-27 20:42:36,828 INFO L125 PetriNetUnfolderBase]: For 75205/75205 co-relation queries the response was YES. [2024-06-27 20:42:36,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 1016 events. 570/1016 cut-off events. For 75205/75205 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5075 event pairs, 76 based on Foata normal form. 4/1020 useless extension candidates. Maximal degree in co-relation 7278. Up to 743 conditions per place. [2024-06-27 20:42:36,837 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 155 selfloop transitions, 71 changer transitions 0/228 dead transitions. [2024-06-27 20:42:36,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 228 transitions, 3076 flow [2024-06-27 20:42:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:42:36,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:42:36,838 INFO L175 Difference]: Start difference. First operand has 239 places, 207 transitions, 2375 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:42:36,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 228 transitions, 3076 flow [2024-06-27 20:42:37,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 228 transitions, 2958 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:37,017 INFO L231 Difference]: Finished difference. Result has 243 places, 209 transitions, 2460 flow [2024-06-27 20:42:37,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2460, PETRI_PLACES=243, PETRI_TRANSITIONS=209} [2024-06-27 20:42:37,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-27 20:42:37,018 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 209 transitions, 2460 flow [2024-06-27 20:42:37,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:37,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:37,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:37,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:42:37,019 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:37,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -53632200, now seen corresponding path program 5 times [2024-06-27 20:42:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809110475] [2024-06-27 20:42:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809110475] [2024-06-27 20:42:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809110475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:37,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300405579] [2024-06-27 20:42:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:37,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:37,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 209 transitions, 2460 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:37,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:37,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:37,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:38,203 INFO L124 PetriNetUnfolderBase]: 566/1010 cut-off events. [2024-06-27 20:42:38,203 INFO L125 PetriNetUnfolderBase]: For 67753/67753 co-relation queries the response was YES. [2024-06-27 20:42:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7268 conditions, 1010 events. 566/1010 cut-off events. For 67753/67753 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5046 event pairs, 77 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 7156. Up to 742 conditions per place. [2024-06-27 20:42:38,215 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 160 selfloop transitions, 66 changer transitions 0/228 dead transitions. [2024-06-27 20:42:38,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 228 transitions, 3112 flow [2024-06-27 20:42:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:42:38,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:42:38,217 INFO L175 Difference]: Start difference. First operand has 243 places, 209 transitions, 2460 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:42:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 228 transitions, 3112 flow [2024-06-27 20:42:38,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 228 transitions, 2898 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:38,366 INFO L231 Difference]: Finished difference. Result has 246 places, 209 transitions, 2383 flow [2024-06-27 20:42:38,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2383, PETRI_PLACES=246, PETRI_TRANSITIONS=209} [2024-06-27 20:42:38,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-27 20:42:38,366 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 209 transitions, 2383 flow [2024-06-27 20:42:38,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:38,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:38,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:38,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:42:38,367 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:38,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1335759178, now seen corresponding path program 9 times [2024-06-27 20:42:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:38,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659782462] [2024-06-27 20:42:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:38,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659782462] [2024-06-27 20:42:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659782462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:39,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:39,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:39,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314508440] [2024-06-27 20:42:39,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:39,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:39,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:39,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 209 transitions, 2383 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:39,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:39,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:39,766 INFO L124 PetriNetUnfolderBase]: 570/1018 cut-off events. [2024-06-27 20:42:39,766 INFO L125 PetriNetUnfolderBase]: For 69253/69253 co-relation queries the response was YES. [2024-06-27 20:42:39,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7271 conditions, 1018 events. 570/1018 cut-off events. For 69253/69253 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5101 event pairs, 86 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 7158. Up to 887 conditions per place. [2024-06-27 20:42:39,775 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 41 changer transitions 0/226 dead transitions. [2024-06-27 20:42:39,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 226 transitions, 2909 flow [2024-06-27 20:42:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:42:39,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:42:39,776 INFO L175 Difference]: Start difference. First operand has 246 places, 209 transitions, 2383 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:42:39,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 226 transitions, 2909 flow [2024-06-27 20:42:39,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 226 transitions, 2789 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:39,925 INFO L231 Difference]: Finished difference. Result has 247 places, 210 transitions, 2379 flow [2024-06-27 20:42:39,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2379, PETRI_PLACES=247, PETRI_TRANSITIONS=210} [2024-06-27 20:42:39,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-27 20:42:39,926 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 210 transitions, 2379 flow [2024-06-27 20:42:39,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:39,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:39,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:42:39,926 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:39,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1335755458, now seen corresponding path program 10 times [2024-06-27 20:42:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:39,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233786516] [2024-06-27 20:42:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:40,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:40,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233786516] [2024-06-27 20:42:40,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233786516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:40,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:40,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012682395] [2024-06-27 20:42:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:40,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:40,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:40,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:40,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 210 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:40,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:40,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:40,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:41,193 INFO L124 PetriNetUnfolderBase]: 574/1026 cut-off events. [2024-06-27 20:42:41,193 INFO L125 PetriNetUnfolderBase]: For 71481/71481 co-relation queries the response was YES. [2024-06-27 20:42:41,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7334 conditions, 1026 events. 574/1026 cut-off events. For 71481/71481 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5162 event pairs, 88 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7220. Up to 875 conditions per place. [2024-06-27 20:42:41,207 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 43 changer transitions 0/227 dead transitions. [2024-06-27 20:42:41,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 227 transitions, 2905 flow [2024-06-27 20:42:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:42:41,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:42:41,208 INFO L175 Difference]: Start difference. First operand has 247 places, 210 transitions, 2379 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:42:41,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 227 transitions, 2905 flow [2024-06-27 20:42:41,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 227 transitions, 2799 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:41,383 INFO L231 Difference]: Finished difference. Result has 249 places, 211 transitions, 2395 flow [2024-06-27 20:42:41,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2395, PETRI_PLACES=249, PETRI_TRANSITIONS=211} [2024-06-27 20:42:41,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 20:42:41,383 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 211 transitions, 2395 flow [2024-06-27 20:42:41,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:41,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:41,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:41,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:42:41,384 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:41,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash -411572080, now seen corresponding path program 6 times [2024-06-27 20:42:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860653262] [2024-06-27 20:42:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:41,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:42,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:42,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860653262] [2024-06-27 20:42:42,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860653262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:42,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:42,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850596157] [2024-06-27 20:42:42,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:42,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:42,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:42,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 211 transitions, 2395 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:42,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:42,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:42,443 INFO L124 PetriNetUnfolderBase]: 574/1026 cut-off events. [2024-06-27 20:42:42,443 INFO L125 PetriNetUnfolderBase]: For 70888/70888 co-relation queries the response was YES. [2024-06-27 20:42:42,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 1026 events. 574/1026 cut-off events. For 70888/70888 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5161 event pairs, 99 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7173. Up to 759 conditions per place. [2024-06-27 20:42:42,452 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 170 selfloop transitions, 60 changer transitions 0/232 dead transitions. [2024-06-27 20:42:42,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 232 transitions, 3111 flow [2024-06-27 20:42:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:42:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:42:42,453 INFO L175 Difference]: Start difference. First operand has 249 places, 211 transitions, 2395 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:42:42,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 232 transitions, 3111 flow [2024-06-27 20:42:42,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 232 transitions, 2999 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:42,605 INFO L231 Difference]: Finished difference. Result has 252 places, 213 transitions, 2460 flow [2024-06-27 20:42:42,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2460, PETRI_PLACES=252, PETRI_TRANSITIONS=213} [2024-06-27 20:42:42,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 20:42:42,606 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 213 transitions, 2460 flow [2024-06-27 20:42:42,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:42,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:42,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:42:42,606 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:42,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -950875804, now seen corresponding path program 11 times [2024-06-27 20:42:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:42,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4346548] [2024-06-27 20:42:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4346548] [2024-06-27 20:42:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4346548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:43,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:43,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:43,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717379440] [2024-06-27 20:42:43,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:43,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:43,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:43,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 213 transitions, 2460 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:43,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:43,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:43,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:43,736 INFO L124 PetriNetUnfolderBase]: 578/1034 cut-off events. [2024-06-27 20:42:43,736 INFO L125 PetriNetUnfolderBase]: For 73012/73012 co-relation queries the response was YES. [2024-06-27 20:42:43,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1034 events. 578/1034 cut-off events. For 73012/73012 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5226 event pairs, 99 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 7272. Up to 866 conditions per place. [2024-06-27 20:42:43,745 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 31 changer transitions 0/229 dead transitions. [2024-06-27 20:42:43,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 229 transitions, 2982 flow [2024-06-27 20:42:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 20:42:43,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:42:43,746 INFO L175 Difference]: Start difference. First operand has 252 places, 213 transitions, 2460 flow. Second operand 9 states and 93 transitions. [2024-06-27 20:42:43,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 229 transitions, 2982 flow [2024-06-27 20:42:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 229 transitions, 2860 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:43,906 INFO L231 Difference]: Finished difference. Result has 253 places, 214 transitions, 2444 flow [2024-06-27 20:42:43,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2444, PETRI_PLACES=253, PETRI_TRANSITIONS=214} [2024-06-27 20:42:43,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-27 20:42:43,906 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 214 transitions, 2444 flow [2024-06-27 20:42:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:43,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:43,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:42:43,907 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1725354140, now seen corresponding path program 12 times [2024-06-27 20:42:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754865839] [2024-06-27 20:42:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754865839] [2024-06-27 20:42:44,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754865839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:44,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589384017] [2024-06-27 20:42:44,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:44,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:44,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 214 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:44,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:44,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:44,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:45,304 INFO L124 PetriNetUnfolderBase]: 589/1055 cut-off events. [2024-06-27 20:42:45,305 INFO L125 PetriNetUnfolderBase]: For 80829/80829 co-relation queries the response was YES. [2024-06-27 20:42:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7714 conditions, 1055 events. 589/1055 cut-off events. For 80829/80829 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5355 event pairs, 113 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 7597. Up to 861 conditions per place. [2024-06-27 20:42:45,313 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 184 selfloop transitions, 46 changer transitions 0/232 dead transitions. [2024-06-27 20:42:45,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 232 transitions, 3160 flow [2024-06-27 20:42:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:42:45,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:42:45,314 INFO L175 Difference]: Start difference. First operand has 253 places, 214 transitions, 2444 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:42:45,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 232 transitions, 3160 flow [2024-06-27 20:42:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 232 transitions, 3052 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:45,485 INFO L231 Difference]: Finished difference. Result has 255 places, 216 transitions, 2512 flow [2024-06-27 20:42:45,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2512, PETRI_PLACES=255, PETRI_TRANSITIONS=216} [2024-06-27 20:42:45,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 20:42:45,486 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 216 transitions, 2512 flow [2024-06-27 20:42:45,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:45,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:45,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:45,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:42:45,486 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:45,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash -948997979, now seen corresponding path program 3 times [2024-06-27 20:42:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272059867] [2024-06-27 20:42:45,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:45,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:46,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:46,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272059867] [2024-06-27 20:42:46,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272059867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:46,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:46,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:46,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040008430] [2024-06-27 20:42:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:46,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:46,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:46,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:46,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:46,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 216 transitions, 2512 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:46,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:46,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:46,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:46,736 INFO L124 PetriNetUnfolderBase]: 587/1052 cut-off events. [2024-06-27 20:42:46,736 INFO L125 PetriNetUnfolderBase]: For 71184/71184 co-relation queries the response was YES. [2024-06-27 20:42:46,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1052 events. 587/1052 cut-off events. For 71184/71184 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5351 event pairs, 113 based on Foata normal form. 1/1053 useless extension candidates. Maximal degree in co-relation 7418. Up to 900 conditions per place. [2024-06-27 20:42:46,748 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 55 changer transitions 0/231 dead transitions. [2024-06-27 20:42:46,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 231 transitions, 3018 flow [2024-06-27 20:42:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:42:46,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:42:46,749 INFO L175 Difference]: Start difference. First operand has 255 places, 216 transitions, 2512 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:42:46,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 231 transitions, 3018 flow [2024-06-27 20:42:46,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 231 transitions, 2915 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:46,926 INFO L231 Difference]: Finished difference. Result has 257 places, 216 transitions, 2539 flow [2024-06-27 20:42:46,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2539, PETRI_PLACES=257, PETRI_TRANSITIONS=216} [2024-06-27 20:42:46,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 20:42:46,926 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 216 transitions, 2539 flow [2024-06-27 20:42:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:46,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:46,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:42:46,927 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:46,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash -865881244, now seen corresponding path program 13 times [2024-06-27 20:42:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033623529] [2024-06-27 20:42:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:47,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033623529] [2024-06-27 20:42:47,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033623529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:47,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:47,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33231335] [2024-06-27 20:42:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:47,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:47,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:47,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:47,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:48,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:48,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 216 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:48,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:48,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:48,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:48,381 INFO L124 PetriNetUnfolderBase]: 584/1047 cut-off events. [2024-06-27 20:42:48,382 INFO L125 PetriNetUnfolderBase]: For 66343/66343 co-relation queries the response was YES. [2024-06-27 20:42:48,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7381 conditions, 1047 events. 584/1047 cut-off events. For 66343/66343 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5310 event pairs, 114 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7263. Up to 904 conditions per place. [2024-06-27 20:42:48,392 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 46 changer transitions 0/231 dead transitions. [2024-06-27 20:42:48,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 231 transitions, 3041 flow [2024-06-27 20:42:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:42:48,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:42:48,393 INFO L175 Difference]: Start difference. First operand has 257 places, 216 transitions, 2539 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:42:48,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 231 transitions, 3041 flow [2024-06-27 20:42:48,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 231 transitions, 2795 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 20:42:48,544 INFO L231 Difference]: Finished difference. Result has 254 places, 216 transitions, 2396 flow [2024-06-27 20:42:48,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2396, PETRI_PLACES=254, PETRI_TRANSITIONS=216} [2024-06-27 20:42:48,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 20:42:48,544 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 216 transitions, 2396 flow [2024-06-27 20:42:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:48,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:48,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:42:48,545 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:48,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1721625398, now seen corresponding path program 7 times [2024-06-27 20:42:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138783163] [2024-06-27 20:42:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:49,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138783163] [2024-06-27 20:42:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138783163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936982460] [2024-06-27 20:42:49,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:49,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:49,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:49,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 216 transitions, 2396 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:49,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:49,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:49,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:49,592 INFO L124 PetriNetUnfolderBase]: 590/1057 cut-off events. [2024-06-27 20:42:49,592 INFO L125 PetriNetUnfolderBase]: For 64224/64224 co-relation queries the response was YES. [2024-06-27 20:42:49,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1057 events. 590/1057 cut-off events. For 64224/64224 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5381 event pairs, 90 based on Foata normal form. 2/1059 useless extension candidates. Maximal degree in co-relation 7187. Up to 908 conditions per place. [2024-06-27 20:42:49,602 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 46 changer transitions 0/235 dead transitions. [2024-06-27 20:42:49,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 235 transitions, 2966 flow [2024-06-27 20:42:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:42:49,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:42:49,603 INFO L175 Difference]: Start difference. First operand has 254 places, 216 transitions, 2396 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:42:49,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 235 transitions, 2966 flow [2024-06-27 20:42:49,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 235 transitions, 2855 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:49,750 INFO L231 Difference]: Finished difference. Result has 254 places, 218 transitions, 2440 flow [2024-06-27 20:42:49,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2440, PETRI_PLACES=254, PETRI_TRANSITIONS=218} [2024-06-27 20:42:49,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 20:42:49,751 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 218 transitions, 2440 flow [2024-06-27 20:42:49,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:49,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:49,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:49,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:42:49,752 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:49,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1577740820, now seen corresponding path program 14 times [2024-06-27 20:42:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:49,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029687808] [2024-06-27 20:42:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:50,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029687808] [2024-06-27 20:42:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029687808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:50,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:50,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:50,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346416718] [2024-06-27 20:42:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:50,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:50,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:50,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:50,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 218 transitions, 2440 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:50,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:50,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:50,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:51,010 INFO L124 PetriNetUnfolderBase]: 594/1065 cut-off events. [2024-06-27 20:42:51,010 INFO L125 PetriNetUnfolderBase]: For 62928/62928 co-relation queries the response was YES. [2024-06-27 20:42:51,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 1065 events. 594/1065 cut-off events. For 62928/62928 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5439 event pairs, 76 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 7260. Up to 882 conditions per place. [2024-06-27 20:42:51,020 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 171 selfloop transitions, 60 changer transitions 0/233 dead transitions. [2024-06-27 20:42:51,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 233 transitions, 2972 flow [2024-06-27 20:42:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:42:51,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:42:51,021 INFO L175 Difference]: Start difference. First operand has 254 places, 218 transitions, 2440 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:42:51,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 233 transitions, 2972 flow [2024-06-27 20:42:51,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 233 transitions, 2857 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:51,163 INFO L231 Difference]: Finished difference. Result has 255 places, 219 transitions, 2479 flow [2024-06-27 20:42:51,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2479, PETRI_PLACES=255, PETRI_TRANSITIONS=219} [2024-06-27 20:42:51,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 20:42:51,164 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 219 transitions, 2479 flow [2024-06-27 20:42:51,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:51,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:51,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:51,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:42:51,164 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:51,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1577734868, now seen corresponding path program 8 times [2024-06-27 20:42:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738915890] [2024-06-27 20:42:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:51,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:51,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738915890] [2024-06-27 20:42:51,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738915890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426084176] [2024-06-27 20:42:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:51,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:52,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:52,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 219 transitions, 2479 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:52,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:52,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:52,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:52,302 INFO L124 PetriNetUnfolderBase]: 645/1147 cut-off events. [2024-06-27 20:42:52,302 INFO L125 PetriNetUnfolderBase]: For 87121/87121 co-relation queries the response was YES. [2024-06-27 20:42:52,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 1147 events. 645/1147 cut-off events. For 87121/87121 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5891 event pairs, 80 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 8535. Up to 712 conditions per place. [2024-06-27 20:42:52,313 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 90 changer transitions 0/246 dead transitions. [2024-06-27 20:42:52,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 246 transitions, 3497 flow [2024-06-27 20:42:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:42:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:42:52,314 INFO L175 Difference]: Start difference. First operand has 255 places, 219 transitions, 2479 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:42:52,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 246 transitions, 3497 flow [2024-06-27 20:42:52,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 246 transitions, 3351 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:52,599 INFO L231 Difference]: Finished difference. Result has 260 places, 227 transitions, 2784 flow [2024-06-27 20:42:52,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2784, PETRI_PLACES=260, PETRI_TRANSITIONS=227} [2024-06-27 20:42:52,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 20:42:52,600 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 227 transitions, 2784 flow [2024-06-27 20:42:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:52,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:52,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:52,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:42:52,600 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:52,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash 416498102, now seen corresponding path program 9 times [2024-06-27 20:42:52,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:52,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793009917] [2024-06-27 20:42:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:52,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793009917] [2024-06-27 20:42:53,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793009917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:53,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303666846] [2024-06-27 20:42:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:53,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:53,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:53,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 227 transitions, 2784 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:53,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:53,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:53,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:53,717 INFO L124 PetriNetUnfolderBase]: 649/1155 cut-off events. [2024-06-27 20:42:53,717 INFO L125 PetriNetUnfolderBase]: For 88232/88232 co-relation queries the response was YES. [2024-06-27 20:42:53,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8877 conditions, 1155 events. 649/1155 cut-off events. For 88232/88232 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5951 event pairs, 76 based on Foata normal form. 4/1159 useless extension candidates. Maximal degree in co-relation 8757. Up to 714 conditions per place. [2024-06-27 20:42:53,729 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 106 changer transitions 0/247 dead transitions. [2024-06-27 20:42:53,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 247 transitions, 3549 flow [2024-06-27 20:42:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:42:53,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:42:53,730 INFO L175 Difference]: Start difference. First operand has 260 places, 227 transitions, 2784 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:42:53,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 247 transitions, 3549 flow [2024-06-27 20:42:53,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 247 transitions, 3433 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:53,911 INFO L231 Difference]: Finished difference. Result has 264 places, 229 transitions, 2956 flow [2024-06-27 20:42:53,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2956, PETRI_PLACES=264, PETRI_TRANSITIONS=229} [2024-06-27 20:42:53,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 20:42:53,912 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 229 transitions, 2956 flow [2024-06-27 20:42:53,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:53,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:53,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:53,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:42:53,913 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:53,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash 416498381, now seen corresponding path program 2 times [2024-06-27 20:42:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:53,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102634439] [2024-06-27 20:42:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102634439] [2024-06-27 20:42:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102634439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:55,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756324746] [2024-06-27 20:42:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:55,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:55,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 229 transitions, 2956 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:55,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:55,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:55,483 INFO L124 PetriNetUnfolderBase]: 645/1148 cut-off events. [2024-06-27 20:42:55,483 INFO L125 PetriNetUnfolderBase]: For 78318/78318 co-relation queries the response was YES. [2024-06-27 20:42:55,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8907 conditions, 1148 events. 645/1148 cut-off events. For 78318/78318 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5921 event pairs, 157 based on Foata normal form. 1/1149 useless extension candidates. Maximal degree in co-relation 8786. Up to 1094 conditions per place. [2024-06-27 20:42:55,492 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 30 changer transitions 0/242 dead transitions. [2024-06-27 20:42:55,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 242 transitions, 3487 flow [2024-06-27 20:42:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-27 20:42:55,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-27 20:42:55,493 INFO L175 Difference]: Start difference. First operand has 264 places, 229 transitions, 2956 flow. Second operand 10 states and 98 transitions. [2024-06-27 20:42:55,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 242 transitions, 3487 flow [2024-06-27 20:42:55,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 242 transitions, 3253 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:55,683 INFO L231 Difference]: Finished difference. Result has 266 places, 231 transitions, 2819 flow [2024-06-27 20:42:55,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2819, PETRI_PLACES=266, PETRI_TRANSITIONS=231} [2024-06-27 20:42:55,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 20:42:55,684 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 231 transitions, 2819 flow [2024-06-27 20:42:55,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:55,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:55,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:55,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:42:55,685 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:55,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 416490662, now seen corresponding path program 10 times [2024-06-27 20:42:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726414070] [2024-06-27 20:42:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:55,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:56,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726414070] [2024-06-27 20:42:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726414070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:56,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:56,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609673172] [2024-06-27 20:42:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:56,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:56,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:56,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:56,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 231 transitions, 2819 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:56,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:56,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:56,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:56,818 INFO L124 PetriNetUnfolderBase]: 641/1143 cut-off events. [2024-06-27 20:42:56,819 INFO L125 PetriNetUnfolderBase]: For 74495/74495 co-relation queries the response was YES. [2024-06-27 20:42:56,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 1143 events. 641/1143 cut-off events. For 74495/74495 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5872 event pairs, 77 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 8334. Up to 709 conditions per place. [2024-06-27 20:42:56,829 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 100 changer transitions 0/249 dead transitions. [2024-06-27 20:42:56,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 249 transitions, 3529 flow [2024-06-27 20:42:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:42:56,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:42:56,830 INFO L175 Difference]: Start difference. First operand has 266 places, 231 transitions, 2819 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:42:56,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 249 transitions, 3529 flow [2024-06-27 20:42:57,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 249 transitions, 3423 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:57,024 INFO L231 Difference]: Finished difference. Result has 268 places, 231 transitions, 2921 flow [2024-06-27 20:42:57,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2921, PETRI_PLACES=268, PETRI_TRANSITIONS=231} [2024-06-27 20:42:57,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-27 20:42:57,024 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 231 transitions, 2921 flow [2024-06-27 20:42:57,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:57,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:57,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:42:57,025 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:57,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1583247350, now seen corresponding path program 15 times [2024-06-27 20:42:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:57,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068242063] [2024-06-27 20:42:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:57,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068242063] [2024-06-27 20:42:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068242063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381427270] [2024-06-27 20:42:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:57,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:57,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:57,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 231 transitions, 2921 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:57,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:57,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:57,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:58,290 INFO L124 PetriNetUnfolderBase]: 645/1150 cut-off events. [2024-06-27 20:42:58,290 INFO L125 PetriNetUnfolderBase]: For 76975/76975 co-relation queries the response was YES. [2024-06-27 20:42:58,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 1150 events. 645/1150 cut-off events. For 76975/76975 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5948 event pairs, 90 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 8577. Up to 967 conditions per place. [2024-06-27 20:42:58,332 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 190 selfloop transitions, 54 changer transitions 0/246 dead transitions. [2024-06-27 20:42:58,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 246 transitions, 3479 flow [2024-06-27 20:42:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:42:58,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:42:58,334 INFO L175 Difference]: Start difference. First operand has 268 places, 231 transitions, 2921 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:42:58,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 246 transitions, 3479 flow [2024-06-27 20:42:58,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 246 transitions, 3298 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:58,530 INFO L231 Difference]: Finished difference. Result has 268 places, 232 transitions, 2882 flow [2024-06-27 20:42:58,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2882, PETRI_PLACES=268, PETRI_TRANSITIONS=232} [2024-06-27 20:42:58,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-27 20:42:58,530 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 232 transitions, 2882 flow [2024-06-27 20:42:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:58,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:58,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:42:58,531 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:42:58,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 410772650, now seen corresponding path program 16 times [2024-06-27 20:42:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553486265] [2024-06-27 20:42:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:59,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553486265] [2024-06-27 20:42:59,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553486265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:59,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:59,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351199859] [2024-06-27 20:42:59,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:59,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:59,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:59,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:59,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 232 transitions, 2882 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:59,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:59,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:59,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:59,890 INFO L124 PetriNetUnfolderBase]: 649/1158 cut-off events. [2024-06-27 20:42:59,890 INFO L125 PetriNetUnfolderBase]: For 77211/77211 co-relation queries the response was YES. [2024-06-27 20:42:59,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8692 conditions, 1158 events. 649/1158 cut-off events. For 77211/77211 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5997 event pairs, 90 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 8570. Up to 935 conditions per place. [2024-06-27 20:42:59,902 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 187 selfloop transitions, 58 changer transitions 0/247 dead transitions. [2024-06-27 20:42:59,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 247 transitions, 3440 flow [2024-06-27 20:42:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:42:59,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:42:59,903 INFO L175 Difference]: Start difference. First operand has 268 places, 232 transitions, 2882 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:42:59,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 247 transitions, 3440 flow [2024-06-27 20:43:00,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 247 transitions, 3308 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:00,092 INFO L231 Difference]: Finished difference. Result has 270 places, 233 transitions, 2902 flow [2024-06-27 20:43:00,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2902, PETRI_PLACES=270, PETRI_TRANSITIONS=233} [2024-06-27 20:43:00,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:43:00,093 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 233 transitions, 2902 flow [2024-06-27 20:43:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:00,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:00,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:43:00,093 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:00,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash 410926472, now seen corresponding path program 11 times [2024-06-27 20:43:00,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:00,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456857549] [2024-06-27 20:43:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:00,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:00,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456857549] [2024-06-27 20:43:00,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456857549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:00,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:00,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:00,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870558846] [2024-06-27 20:43:00,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:00,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:00,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:00,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:00,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 233 transitions, 2902 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:00,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:00,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:00,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:01,285 INFO L124 PetriNetUnfolderBase]: 650/1160 cut-off events. [2024-06-27 20:43:01,285 INFO L125 PetriNetUnfolderBase]: For 74837/74837 co-relation queries the response was YES. [2024-06-27 20:43:01,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8646 conditions, 1160 events. 650/1160 cut-off events. For 74837/74837 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6015 event pairs, 109 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 8523. Up to 727 conditions per place. [2024-06-27 20:43:01,296 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 91 changer transitions 0/253 dead transitions. [2024-06-27 20:43:01,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 253 transitions, 3677 flow [2024-06-27 20:43:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:43:01,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:43:01,297 INFO L175 Difference]: Start difference. First operand has 270 places, 233 transitions, 2902 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:43:01,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 253 transitions, 3677 flow [2024-06-27 20:43:01,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 253 transitions, 3537 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:01,523 INFO L231 Difference]: Finished difference. Result has 273 places, 235 transitions, 3011 flow [2024-06-27 20:43:01,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3011, PETRI_PLACES=273, PETRI_TRANSITIONS=235} [2024-06-27 20:43:01,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 20:43:01,524 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 235 transitions, 3011 flow [2024-06-27 20:43:01,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:01,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:01,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:01,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:43:01,524 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:01,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898278, now seen corresponding path program 12 times [2024-06-27 20:43:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941239411] [2024-06-27 20:43:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:02,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:02,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941239411] [2024-06-27 20:43:02,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941239411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:02,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:02,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:02,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702142051] [2024-06-27 20:43:02,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:02,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:02,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:02,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:02,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 235 transitions, 3011 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:02,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:02,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:02,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:02,817 INFO L124 PetriNetUnfolderBase]: 714/1264 cut-off events. [2024-06-27 20:43:02,817 INFO L125 PetriNetUnfolderBase]: For 104779/104779 co-relation queries the response was YES. [2024-06-27 20:43:02,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10227 conditions, 1264 events. 714/1264 cut-off events. For 104779/104779 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6608 event pairs, 83 based on Foata normal form. 4/1268 useless extension candidates. Maximal degree in co-relation 10103. Up to 588 conditions per place. [2024-06-27 20:43:02,830 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 123 changer transitions 0/268 dead transitions. [2024-06-27 20:43:02,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 268 transitions, 4353 flow [2024-06-27 20:43:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:43:02,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:43:02,833 INFO L175 Difference]: Start difference. First operand has 273 places, 235 transitions, 3011 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:43:02,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 268 transitions, 4353 flow [2024-06-27 20:43:03,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 268 transitions, 4189 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:03,063 INFO L231 Difference]: Finished difference. Result has 277 places, 245 transitions, 3329 flow [2024-06-27 20:43:03,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3329, PETRI_PLACES=277, PETRI_TRANSITIONS=245} [2024-06-27 20:43:03,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-27 20:43:03,064 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 245 transitions, 3329 flow [2024-06-27 20:43:03,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:03,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:03,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:03,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:43:03,064 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:03,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898557, now seen corresponding path program 3 times [2024-06-27 20:43:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114788912] [2024-06-27 20:43:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114788912] [2024-06-27 20:43:04,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114788912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:04,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:04,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360886779] [2024-06-27 20:43:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:04,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:04,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:04,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:04,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 245 transitions, 3329 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:04,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:04,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:04,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:04,633 INFO L124 PetriNetUnfolderBase]: 710/1258 cut-off events. [2024-06-27 20:43:04,633 INFO L125 PetriNetUnfolderBase]: For 98996/98996 co-relation queries the response was YES. [2024-06-27 20:43:04,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 1258 events. 710/1258 cut-off events. For 98996/98996 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6586 event pairs, 171 based on Foata normal form. 1/1259 useless extension candidates. Maximal degree in co-relation 10204. Up to 1164 conditions per place. [2024-06-27 20:43:04,645 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 47 changer transitions 0/255 dead transitions. [2024-06-27 20:43:04,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 255 transitions, 3866 flow [2024-06-27 20:43:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:43:04,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 20:43:04,646 INFO L175 Difference]: Start difference. First operand has 277 places, 245 transitions, 3329 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:43:04,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 255 transitions, 3866 flow [2024-06-27 20:43:04,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 3690 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 20:43:04,881 INFO L231 Difference]: Finished difference. Result has 283 places, 246 transitions, 3265 flow [2024-06-27 20:43:04,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3265, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2024-06-27 20:43:04,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-27 20:43:04,882 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 3265 flow [2024-06-27 20:43:04,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:04,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:04,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:04,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:43:04,882 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:04,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1862795981, now seen corresponding path program 4 times [2024-06-27 20:43:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:04,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739299725] [2024-06-27 20:43:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:04,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739299725] [2024-06-27 20:43:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739299725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:05,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:05,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:05,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193923307] [2024-06-27 20:43:05,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:05,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:05,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:05,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:05,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 3265 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:05,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:05,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:05,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:06,393 INFO L124 PetriNetUnfolderBase]: 723/1278 cut-off events. [2024-06-27 20:43:06,394 INFO L125 PetriNetUnfolderBase]: For 104775/104775 co-relation queries the response was YES. [2024-06-27 20:43:06,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10511 conditions, 1278 events. 723/1278 cut-off events. For 104775/104775 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6677 event pairs, 236 based on Foata normal form. 1/1279 useless extension candidates. Maximal degree in co-relation 10383. Up to 1218 conditions per place. [2024-06-27 20:43:06,407 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 23 changer transitions 0/267 dead transitions. [2024-06-27 20:43:06,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 267 transitions, 4277 flow [2024-06-27 20:43:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 20:43:06,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:43:06,407 INFO L175 Difference]: Start difference. First operand has 283 places, 246 transitions, 3265 flow. Second operand 11 states and 110 transitions. [2024-06-27 20:43:06,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 267 transitions, 4277 flow [2024-06-27 20:43:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 4166 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:06,683 INFO L231 Difference]: Finished difference. Result has 287 places, 253 transitions, 3373 flow [2024-06-27 20:43:06,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3373, PETRI_PLACES=287, PETRI_TRANSITIONS=253} [2024-06-27 20:43:06,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-27 20:43:06,684 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 253 transitions, 3373 flow [2024-06-27 20:43:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:43:06,684 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:06,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:06,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890838, now seen corresponding path program 13 times [2024-06-27 20:43:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:06,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109446924] [2024-06-27 20:43:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:07,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:07,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109446924] [2024-06-27 20:43:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109446924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:07,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272561252] [2024-06-27 20:43:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:07,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:07,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:07,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:07,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 253 transitions, 3373 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:07,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:07,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:07,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:07,821 INFO L124 PetriNetUnfolderBase]: 719/1273 cut-off events. [2024-06-27 20:43:07,821 INFO L125 PetriNetUnfolderBase]: For 104096/104096 co-relation queries the response was YES. [2024-06-27 20:43:07,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10354 conditions, 1273 events. 719/1273 cut-off events. For 104096/104096 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6669 event pairs, 81 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 10224. Up to 594 conditions per place. [2024-06-27 20:43:07,834 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 134 changer transitions 0/275 dead transitions. [2024-06-27 20:43:07,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 275 transitions, 4530 flow [2024-06-27 20:43:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:43:07,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:43:07,835 INFO L175 Difference]: Start difference. First operand has 287 places, 253 transitions, 3373 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:43:07,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 275 transitions, 4530 flow [2024-06-27 20:43:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 275 transitions, 4466 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:43:08,089 INFO L231 Difference]: Finished difference. Result has 291 places, 255 transitions, 3641 flow [2024-06-27 20:43:08,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3641, PETRI_PLACES=291, PETRI_TRANSITIONS=255} [2024-06-27 20:43:08,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-27 20:43:08,089 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 255 transitions, 3641 flow [2024-06-27 20:43:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:08,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:08,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:43:08,090 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:08,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash 919251196, now seen corresponding path program 17 times [2024-06-27 20:43:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:08,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458509158] [2024-06-27 20:43:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:08,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:08,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458509158] [2024-06-27 20:43:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458509158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:08,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:08,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162614376] [2024-06-27 20:43:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:09,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:09,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 255 transitions, 3641 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:09,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:09,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:09,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:09,405 INFO L124 PetriNetUnfolderBase]: 723/1281 cut-off events. [2024-06-27 20:43:09,405 INFO L125 PetriNetUnfolderBase]: For 107840/107840 co-relation queries the response was YES. [2024-06-27 20:43:09,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10773 conditions, 1281 events. 723/1281 cut-off events. For 107840/107840 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6722 event pairs, 103 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 10641. Up to 1062 conditions per place. [2024-06-27 20:43:09,417 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 205 selfloop transitions, 61 changer transitions 0/268 dead transitions. [2024-06-27 20:43:09,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 268 transitions, 4237 flow [2024-06-27 20:43:09,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:43:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:43:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:43:09,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:43:09,418 INFO L175 Difference]: Start difference. First operand has 291 places, 255 transitions, 3641 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:43:09,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 268 transitions, 4237 flow [2024-06-27 20:43:09,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 268 transitions, 3953 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 20:43:09,717 INFO L231 Difference]: Finished difference. Result has 294 places, 256 transitions, 3511 flow [2024-06-27 20:43:09,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3511, PETRI_PLACES=294, PETRI_TRANSITIONS=256} [2024-06-27 20:43:09,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-27 20:43:09,717 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 256 transitions, 3511 flow [2024-06-27 20:43:09,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:09,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:09,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:43:09,718 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:09,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1856157748, now seen corresponding path program 14 times [2024-06-27 20:43:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476614251] [2024-06-27 20:43:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:10,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476614251] [2024-06-27 20:43:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476614251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:10,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:10,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:10,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978808246] [2024-06-27 20:43:10,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:10,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:10,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:10,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:10,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 256 transitions, 3511 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:10,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:10,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:10,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:10,988 INFO L124 PetriNetUnfolderBase]: 717/1272 cut-off events. [2024-06-27 20:43:10,988 INFO L125 PetriNetUnfolderBase]: For 105921/105921 co-relation queries the response was YES. [2024-06-27 20:43:10,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10202 conditions, 1272 events. 717/1272 cut-off events. For 105921/105921 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6697 event pairs, 228 based on Foata normal form. 4/1276 useless extension candidates. Maximal degree in co-relation 10069. Up to 1207 conditions per place. [2024-06-27 20:43:11,002 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 24 changer transitions 0/268 dead transitions. [2024-06-27 20:43:11,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 268 transitions, 4227 flow [2024-06-27 20:43:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:43:11,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-27 20:43:11,004 INFO L175 Difference]: Start difference. First operand has 294 places, 256 transitions, 3511 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:43:11,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 268 transitions, 4227 flow [2024-06-27 20:43:11,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 268 transitions, 4011 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:11,295 INFO L231 Difference]: Finished difference. Result has 297 places, 256 transitions, 3352 flow [2024-06-27 20:43:11,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3352, PETRI_PLACES=297, PETRI_TRANSITIONS=256} [2024-06-27 20:43:11,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-27 20:43:11,296 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 256 transitions, 3352 flow [2024-06-27 20:43:11,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:11,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:11,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:43:11,297 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:11,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1118697136, now seen corresponding path program 18 times [2024-06-27 20:43:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315462972] [2024-06-27 20:43:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315462972] [2024-06-27 20:43:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315462972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:12,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:12,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376517341] [2024-06-27 20:43:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:12,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:12,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:12,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 256 transitions, 3352 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:12,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:12,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:12,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:12,571 INFO L124 PetriNetUnfolderBase]: 721/1280 cut-off events. [2024-06-27 20:43:12,571 INFO L125 PetriNetUnfolderBase]: For 102084/102084 co-relation queries the response was YES. [2024-06-27 20:43:12,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10077 conditions, 1280 events. 721/1280 cut-off events. For 102084/102084 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6730 event pairs, 91 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 9943. Up to 1062 conditions per place. [2024-06-27 20:43:12,585 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 197 selfloop transitions, 70 changer transitions 0/269 dead transitions. [2024-06-27 20:43:12,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 269 transitions, 3952 flow [2024-06-27 20:43:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:43:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:43:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:43:12,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:43:12,586 INFO L175 Difference]: Start difference. First operand has 297 places, 256 transitions, 3352 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:43:12,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 269 transitions, 3952 flow [2024-06-27 20:43:12,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 269 transitions, 3891 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:12,904 INFO L231 Difference]: Finished difference. Result has 297 places, 257 transitions, 3465 flow [2024-06-27 20:43:12,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3465, PETRI_PLACES=297, PETRI_TRANSITIONS=257} [2024-06-27 20:43:12,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-27 20:43:12,905 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 257 transitions, 3465 flow [2024-06-27 20:43:12,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:12,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:12,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:12,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:43:12,905 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:12,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1862469551, now seen corresponding path program 5 times [2024-06-27 20:43:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:12,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987365836] [2024-06-27 20:43:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:13,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987365836] [2024-06-27 20:43:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987365836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:13,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002959813] [2024-06-27 20:43:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:14,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:14,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 257 transitions, 3465 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:14,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:14,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:14,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:14,479 INFO L124 PetriNetUnfolderBase]: 717/1273 cut-off events. [2024-06-27 20:43:14,479 INFO L125 PetriNetUnfolderBase]: For 99045/99045 co-relation queries the response was YES. [2024-06-27 20:43:14,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 1273 events. 717/1273 cut-off events. For 99045/99045 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6703 event pairs, 236 based on Foata normal form. 1/1274 useless extension candidates. Maximal degree in co-relation 9977. Up to 1242 conditions per place. [2024-06-27 20:43:14,492 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 17 changer transitions 0/267 dead transitions. [2024-06-27 20:43:14,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 267 transitions, 4026 flow [2024-06-27 20:43:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-27 20:43:14,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:43:14,493 INFO L175 Difference]: Start difference. First operand has 297 places, 257 transitions, 3465 flow. Second operand 10 states and 95 transitions. [2024-06-27 20:43:14,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 267 transitions, 4026 flow [2024-06-27 20:43:14,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 267 transitions, 3862 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:14,798 INFO L231 Difference]: Finished difference. Result has 300 places, 258 transitions, 3353 flow [2024-06-27 20:43:14,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3353, PETRI_PLACES=300, PETRI_TRANSITIONS=258} [2024-06-27 20:43:14,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-27 20:43:14,798 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 258 transitions, 3353 flow [2024-06-27 20:43:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:14,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:14,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:14,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:43:14,799 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:14,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1599188518, now seen corresponding path program 15 times [2024-06-27 20:43:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475315083] [2024-06-27 20:43:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475315083] [2024-06-27 20:43:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475315083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101200804] [2024-06-27 20:43:15,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:15,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:15,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:15,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 258 transitions, 3353 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:15,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:15,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:15,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:16,061 INFO L124 PetriNetUnfolderBase]: 758/1339 cut-off events. [2024-06-27 20:43:16,061 INFO L125 PetriNetUnfolderBase]: For 125156/125156 co-relation queries the response was YES. [2024-06-27 20:43:16,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11065 conditions, 1339 events. 758/1339 cut-off events. For 125156/125156 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7076 event pairs, 95 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 10929. Up to 631 conditions per place. [2024-06-27 20:43:16,076 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 130 changer transitions 0/286 dead transitions. [2024-06-27 20:43:16,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 286 transitions, 4713 flow [2024-06-27 20:43:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:43:16,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:43:16,077 INFO L175 Difference]: Start difference. First operand has 300 places, 258 transitions, 3353 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:43:16,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 286 transitions, 4713 flow [2024-06-27 20:43:16,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 286 transitions, 4664 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:16,416 INFO L231 Difference]: Finished difference. Result has 304 places, 266 transitions, 3835 flow [2024-06-27 20:43:16,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3835, PETRI_PLACES=304, PETRI_TRANSITIONS=266} [2024-06-27 20:43:16,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 20:43:16,417 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 266 transitions, 3835 flow [2024-06-27 20:43:16,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:16,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:16,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:16,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:43:16,417 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:16,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1118912617, now seen corresponding path program 6 times [2024-06-27 20:43:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:16,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450818390] [2024-06-27 20:43:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450818390] [2024-06-27 20:43:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450818390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:17,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708266167] [2024-06-27 20:43:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:17,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:17,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:17,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:17,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 266 transitions, 3835 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:17,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:17,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:17,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:17,886 INFO L124 PetriNetUnfolderBase]: 756/1337 cut-off events. [2024-06-27 20:43:17,886 INFO L125 PetriNetUnfolderBase]: For 123369/123369 co-relation queries the response was YES. [2024-06-27 20:43:17,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11466 conditions, 1337 events. 756/1337 cut-off events. For 123369/123369 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7081 event pairs, 184 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 11327. Up to 1243 conditions per place. [2024-06-27 20:43:17,900 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 44 changer transitions 0/276 dead transitions. [2024-06-27 20:43:17,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 276 transitions, 4416 flow [2024-06-27 20:43:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:43:17,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-27 20:43:17,901 INFO L175 Difference]: Start difference. First operand has 304 places, 266 transitions, 3835 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:43:17,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 276 transitions, 4416 flow [2024-06-27 20:43:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 276 transitions, 4206 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 20:43:18,330 INFO L231 Difference]: Finished difference. Result has 309 places, 267 transitions, 3733 flow [2024-06-27 20:43:18,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3733, PETRI_PLACES=309, PETRI_TRANSITIONS=267} [2024-06-27 20:43:18,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-27 20:43:18,330 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 267 transitions, 3733 flow [2024-06-27 20:43:18,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:18,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:18,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:43:18,331 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:18,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1599397768, now seen corresponding path program 16 times [2024-06-27 20:43:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891568144] [2024-06-27 20:43:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:19,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891568144] [2024-06-27 20:43:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891568144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:19,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241818919] [2024-06-27 20:43:19,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:19,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:19,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 267 transitions, 3733 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:19,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:19,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:19,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:19,510 INFO L124 PetriNetUnfolderBase]: 758/1341 cut-off events. [2024-06-27 20:43:19,510 INFO L125 PetriNetUnfolderBase]: For 128789/128789 co-relation queries the response was YES. [2024-06-27 20:43:19,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 1341 events. 758/1341 cut-off events. For 128789/128789 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7081 event pairs, 102 based on Foata normal form. 4/1345 useless extension candidates. Maximal degree in co-relation 10983. Up to 629 conditions per place. [2024-06-27 20:43:19,522 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 123 changer transitions 0/289 dead transitions. [2024-06-27 20:43:19,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 289 transitions, 4971 flow [2024-06-27 20:43:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 20:43:19,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 20:43:19,523 INFO L175 Difference]: Start difference. First operand has 309 places, 267 transitions, 3733 flow. Second operand 10 states and 122 transitions. [2024-06-27 20:43:19,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 289 transitions, 4971 flow [2024-06-27 20:43:19,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 289 transitions, 4858 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:19,879 INFO L231 Difference]: Finished difference. Result has 311 places, 269 transitions, 3935 flow [2024-06-27 20:43:19,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3935, PETRI_PLACES=311, PETRI_TRANSITIONS=269} [2024-06-27 20:43:19,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-27 20:43:19,879 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 269 transitions, 3935 flow [2024-06-27 20:43:19,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:19,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:19,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:19,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:43:19,880 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:19,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1599390328, now seen corresponding path program 17 times [2024-06-27 20:43:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:19,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104075234] [2024-06-27 20:43:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:20,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:20,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104075234] [2024-06-27 20:43:20,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104075234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:20,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:20,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:20,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593923180] [2024-06-27 20:43:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:20,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:20,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:20,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:20,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:20,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:20,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 269 transitions, 3935 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:20,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:20,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:20,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:21,087 INFO L124 PetriNetUnfolderBase]: 754/1335 cut-off events. [2024-06-27 20:43:21,088 INFO L125 PetriNetUnfolderBase]: For 120218/120218 co-relation queries the response was YES. [2024-06-27 20:43:21,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 1335 events. 754/1335 cut-off events. For 120218/120218 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7074 event pairs, 100 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 11028. Up to 628 conditions per place. [2024-06-27 20:43:21,102 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 123 changer transitions 0/289 dead transitions. [2024-06-27 20:43:21,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 289 transitions, 5119 flow [2024-06-27 20:43:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:43:21,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:43:21,103 INFO L175 Difference]: Start difference. First operand has 311 places, 269 transitions, 3935 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:43:21,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 289 transitions, 5119 flow [2024-06-27 20:43:21,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 289 transitions, 4793 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:21,460 INFO L231 Difference]: Finished difference. Result has 314 places, 269 transitions, 3860 flow [2024-06-27 20:43:21,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3860, PETRI_PLACES=314, PETRI_TRANSITIONS=269} [2024-06-27 20:43:21,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 20:43:21,460 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 269 transitions, 3860 flow [2024-06-27 20:43:21,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:21,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:21,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:21,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:43:21,461 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:21,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1176296038, now seen corresponding path program 19 times [2024-06-27 20:43:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:21,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643289275] [2024-06-27 20:43:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:22,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:22,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643289275] [2024-06-27 20:43:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643289275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:22,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:22,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:22,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024387010] [2024-06-27 20:43:22,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:22,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:22,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 269 transitions, 3860 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:22,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:22,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:22,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:22,670 INFO L124 PetriNetUnfolderBase]: 758/1343 cut-off events. [2024-06-27 20:43:22,670 INFO L125 PetriNetUnfolderBase]: For 123692/123692 co-relation queries the response was YES. [2024-06-27 20:43:22,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 1343 events. 758/1343 cut-off events. For 123692/123692 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7136 event pairs, 103 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 10994. Up to 1095 conditions per place. [2024-06-27 20:43:22,685 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 217 selfloop transitions, 64 changer transitions 0/283 dead transitions. [2024-06-27 20:43:22,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 283 transitions, 4652 flow [2024-06-27 20:43:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:43:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:43:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:43:22,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:43:22,686 INFO L175 Difference]: Start difference. First operand has 314 places, 269 transitions, 3860 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:43:22,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 283 transitions, 4652 flow [2024-06-27 20:43:23,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 283 transitions, 4385 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:23,077 INFO L231 Difference]: Finished difference. Result has 315 places, 270 transitions, 3755 flow [2024-06-27 20:43:23,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3755, PETRI_PLACES=315, PETRI_TRANSITIONS=270} [2024-06-27 20:43:23,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-27 20:43:23,077 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 270 transitions, 3755 flow [2024-06-27 20:43:23,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:23,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:23,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:23,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:43:23,078 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:23,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1176142216, now seen corresponding path program 18 times [2024-06-27 20:43:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195491795] [2024-06-27 20:43:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:23,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:23,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195491795] [2024-06-27 20:43:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195491795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:23,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:23,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393257457] [2024-06-27 20:43:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:23,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:23,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:23,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 270 transitions, 3755 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:23,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:23,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:23,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:24,236 INFO L124 PetriNetUnfolderBase]: 774/1369 cut-off events. [2024-06-27 20:43:24,236 INFO L125 PetriNetUnfolderBase]: For 133012/133012 co-relation queries the response was YES. [2024-06-27 20:43:24,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11387 conditions, 1369 events. 774/1369 cut-off events. For 133012/133012 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7269 event pairs, 132 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 11244. Up to 647 conditions per place. [2024-06-27 20:43:24,250 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 132 changer transitions 0/295 dead transitions. [2024-06-27 20:43:24,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 295 transitions, 5108 flow [2024-06-27 20:43:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 20:43:24,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 20:43:24,252 INFO L175 Difference]: Start difference. First operand has 315 places, 270 transitions, 3755 flow. Second operand 10 states and 122 transitions. [2024-06-27 20:43:24,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 295 transitions, 5108 flow [2024-06-27 20:43:24,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 295 transitions, 4937 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:24,666 INFO L231 Difference]: Finished difference. Result has 320 places, 276 transitions, 4117 flow [2024-06-27 20:43:24,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4117, PETRI_PLACES=320, PETRI_TRANSITIONS=276} [2024-06-27 20:43:24,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 20:43:24,667 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 276 transitions, 4117 flow [2024-06-27 20:43:24,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:24,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:24,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:24,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:43:24,667 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:24,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1170785788, now seen corresponding path program 20 times [2024-06-27 20:43:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:24,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433540670] [2024-06-27 20:43:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433540670] [2024-06-27 20:43:25,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433540670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:25,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:25,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:25,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780929132] [2024-06-27 20:43:25,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:25,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:25,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 276 transitions, 4117 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:25,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:25,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:25,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:25,975 INFO L124 PetriNetUnfolderBase]: 771/1364 cut-off events. [2024-06-27 20:43:25,975 INFO L125 PetriNetUnfolderBase]: For 129986/129986 co-relation queries the response was YES. [2024-06-27 20:43:25,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11492 conditions, 1364 events. 771/1364 cut-off events. For 129986/129986 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7249 event pairs, 104 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 11347. Up to 1145 conditions per place. [2024-06-27 20:43:25,991 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 227 selfloop transitions, 60 changer transitions 0/289 dead transitions. [2024-06-27 20:43:25,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 289 transitions, 4735 flow [2024-06-27 20:43:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:43:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:43:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:43:25,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:43:25,992 INFO L175 Difference]: Start difference. First operand has 320 places, 276 transitions, 4117 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:43:25,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 289 transitions, 4735 flow [2024-06-27 20:43:26,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 289 transitions, 4339 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:26,447 INFO L231 Difference]: Finished difference. Result has 320 places, 276 transitions, 3845 flow [2024-06-27 20:43:26,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3845, PETRI_PLACES=320, PETRI_TRANSITIONS=276} [2024-06-27 20:43:26,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 20:43:26,448 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 276 transitions, 3845 flow [2024-06-27 20:43:26,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:26,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:26,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:26,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:43:26,448 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 924763678, now seen corresponding path program 19 times [2024-06-27 20:43:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339505287] [2024-06-27 20:43:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:27,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:27,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339505287] [2024-06-27 20:43:27,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339505287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:27,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:27,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259377937] [2024-06-27 20:43:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:27,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:27,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:27,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 276 transitions, 3845 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:27,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:27,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:27,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:27,656 INFO L124 PetriNetUnfolderBase]: 777/1374 cut-off events. [2024-06-27 20:43:27,656 INFO L125 PetriNetUnfolderBase]: For 131381/131381 co-relation queries the response was YES. [2024-06-27 20:43:27,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 1374 events. 777/1374 cut-off events. For 131381/131381 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7341 event pairs, 135 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 10901. Up to 644 conditions per place. [2024-06-27 20:43:27,671 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 117 changer transitions 0/298 dead transitions. [2024-06-27 20:43:27,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 5282 flow [2024-06-27 20:43:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 20:43:27,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 20:43:27,672 INFO L175 Difference]: Start difference. First operand has 320 places, 276 transitions, 3845 flow. Second operand 10 states and 126 transitions. [2024-06-27 20:43:27,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 5282 flow [2024-06-27 20:43:28,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 298 transitions, 5087 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:28,084 INFO L231 Difference]: Finished difference. Result has 321 places, 278 transitions, 3956 flow [2024-06-27 20:43:28,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3652, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3956, PETRI_PLACES=321, PETRI_TRANSITIONS=278} [2024-06-27 20:43:28,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 20:43:28,085 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 278 transitions, 3956 flow [2024-06-27 20:43:28,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:28,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:28,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:28,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:43:28,086 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:28,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570307, now seen corresponding path program 7 times [2024-06-27 20:43:28,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:28,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749036289] [2024-06-27 20:43:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:29,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749036289] [2024-06-27 20:43:29,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749036289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:29,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:29,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456409898] [2024-06-27 20:43:29,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:29,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:29,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:29,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:29,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:29,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 278 transitions, 3956 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:29,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:29,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:29,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:29,688 INFO L124 PetriNetUnfolderBase]: 775/1371 cut-off events. [2024-06-27 20:43:29,689 INFO L125 PetriNetUnfolderBase]: For 127509/127509 co-relation queries the response was YES. [2024-06-27 20:43:29,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1371 events. 775/1371 cut-off events. For 127509/127509 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7299 event pairs, 184 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 10890. Up to 1277 conditions per place. [2024-06-27 20:43:29,704 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 42 changer transitions 0/288 dead transitions. [2024-06-27 20:43:29,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 288 transitions, 4561 flow [2024-06-27 20:43:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 20:43:29,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 20:43:29,705 INFO L175 Difference]: Start difference. First operand has 321 places, 278 transitions, 3956 flow. Second operand 10 states and 103 transitions. [2024-06-27 20:43:29,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 288 transitions, 4561 flow [2024-06-27 20:43:30,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 288 transitions, 4114 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:30,160 INFO L231 Difference]: Finished difference. Result has 321 places, 279 transitions, 3613 flow [2024-06-27 20:43:30,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3613, PETRI_PLACES=321, PETRI_TRANSITIONS=279} [2024-06-27 20:43:30,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 20:43:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 279 transitions, 3613 flow [2024-06-27 20:43:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:30,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:30,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:30,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:43:30,161 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:30,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 924965488, now seen corresponding path program 20 times [2024-06-27 20:43:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053575877] [2024-06-27 20:43:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:30,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053575877] [2024-06-27 20:43:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053575877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:30,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:30,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928043275] [2024-06-27 20:43:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:30,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:30,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:30,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:30,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 279 transitions, 3613 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:30,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:30,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:30,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:31,342 INFO L124 PetriNetUnfolderBase]: 781/1381 cut-off events. [2024-06-27 20:43:31,342 INFO L125 PetriNetUnfolderBase]: For 133121/133121 co-relation queries the response was YES. [2024-06-27 20:43:31,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 1381 events. 781/1381 cut-off events. For 133121/133121 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7379 event pairs, 136 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 10569. Up to 645 conditions per place. [2024-06-27 20:43:31,356 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 120 changer transitions 0/301 dead transitions. [2024-06-27 20:43:31,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 301 transitions, 5066 flow [2024-06-27 20:43:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 20:43:31,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 20:43:31,357 INFO L175 Difference]: Start difference. First operand has 321 places, 279 transitions, 3613 flow. Second operand 10 states and 125 transitions. [2024-06-27 20:43:31,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 301 transitions, 5066 flow [2024-06-27 20:43:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 301 transitions, 4963 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:31,789 INFO L231 Difference]: Finished difference. Result has 323 places, 281 transitions, 3816 flow [2024-06-27 20:43:31,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3816, PETRI_PLACES=323, PETRI_TRANSITIONS=281} [2024-06-27 20:43:31,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-27 20:43:31,790 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 281 transitions, 3816 flow [2024-06-27 20:43:31,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:31,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:31,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:31,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:43:31,790 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:31,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 21 times [2024-06-27 20:43:31,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:31,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517353818] [2024-06-27 20:43:31,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:31,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:32,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517353818] [2024-06-27 20:43:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517353818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5434201] [2024-06-27 20:43:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:32,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:32,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:32,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 281 transitions, 3816 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:32,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:32,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:32,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:33,017 INFO L124 PetriNetUnfolderBase]: 773/1369 cut-off events. [2024-06-27 20:43:33,017 INFO L125 PetriNetUnfolderBase]: For 129937/129937 co-relation queries the response was YES. [2024-06-27 20:43:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10509 conditions, 1369 events. 773/1369 cut-off events. For 129937/129937 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7303 event pairs, 134 based on Foata normal form. 4/1373 useless extension candidates. Maximal degree in co-relation 10365. Up to 641 conditions per place. [2024-06-27 20:43:33,032 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 121 changer transitions 0/300 dead transitions. [2024-06-27 20:43:33,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 300 transitions, 5036 flow [2024-06-27 20:43:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:43:33,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:43:33,033 INFO L175 Difference]: Start difference. First operand has 323 places, 281 transitions, 3816 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:43:33,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 300 transitions, 5036 flow [2024-06-27 20:43:33,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 300 transitions, 4637 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:33,452 INFO L231 Difference]: Finished difference. Result has 325 places, 281 transitions, 3666 flow [2024-06-27 20:43:33,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3666, PETRI_PLACES=325, PETRI_TRANSITIONS=281} [2024-06-27 20:43:33,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 20:43:33,453 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 281 transitions, 3666 flow [2024-06-27 20:43:33,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:33,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:33,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:33,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:43:33,453 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:33,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -925368805, now seen corresponding path program 1 times [2024-06-27 20:43:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407834952] [2024-06-27 20:43:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:33,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:34,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:34,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407834952] [2024-06-27 20:43:34,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407834952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:34,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:34,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:34,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384407124] [2024-06-27 20:43:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:34,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:34,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:34,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 281 transitions, 3666 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:34,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:34,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:34,758 INFO L124 PetriNetUnfolderBase]: 777/1376 cut-off events. [2024-06-27 20:43:34,758 INFO L125 PetriNetUnfolderBase]: For 122679/122679 co-relation queries the response was YES. [2024-06-27 20:43:34,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10385 conditions, 1376 events. 777/1376 cut-off events. For 122679/122679 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7348 event pairs, 165 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 10240. Up to 1283 conditions per place. [2024-06-27 20:43:34,770 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 25 changer transitions 0/302 dead transitions. [2024-06-27 20:43:34,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 302 transitions, 4328 flow [2024-06-27 20:43:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 20:43:34,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 20:43:34,771 INFO L175 Difference]: Start difference. First operand has 325 places, 281 transitions, 3666 flow. Second operand 11 states and 113 transitions. [2024-06-27 20:43:34,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 302 transitions, 4328 flow [2024-06-27 20:43:35,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 302 transitions, 4092 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:35,150 INFO L231 Difference]: Finished difference. Result has 328 places, 282 transitions, 3498 flow [2024-06-27 20:43:35,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3498, PETRI_PLACES=328, PETRI_TRANSITIONS=282} [2024-06-27 20:43:35,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-27 20:43:35,151 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 282 transitions, 3498 flow [2024-06-27 20:43:35,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:35,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:35,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:35,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:43:35,152 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:35,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1992674625, now seen corresponding path program 2 times [2024-06-27 20:43:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:35,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985706931] [2024-06-27 20:43:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985706931] [2024-06-27 20:43:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985706931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156246924] [2024-06-27 20:43:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:35,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:35,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:36,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:36,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 282 transitions, 3498 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:36,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:36,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:36,496 INFO L124 PetriNetUnfolderBase]: 781/1384 cut-off events. [2024-06-27 20:43:36,496 INFO L125 PetriNetUnfolderBase]: For 124998/124998 co-relation queries the response was YES. [2024-06-27 20:43:36,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 1384 events. 781/1384 cut-off events. For 124998/124998 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7435 event pairs, 132 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10077. Up to 1256 conditions per place. [2024-06-27 20:43:36,512 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 27 changer transitions 0/303 dead transitions. [2024-06-27 20:43:36,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 303 transitions, 4162 flow [2024-06-27 20:43:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 20:43:36,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:43:36,513 INFO L175 Difference]: Start difference. First operand has 328 places, 282 transitions, 3498 flow. Second operand 11 states and 110 transitions. [2024-06-27 20:43:36,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 303 transitions, 4162 flow [2024-06-27 20:43:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 303 transitions, 4104 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:36,937 INFO L231 Difference]: Finished difference. Result has 330 places, 283 transitions, 3514 flow [2024-06-27 20:43:36,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3514, PETRI_PLACES=330, PETRI_TRANSITIONS=283} [2024-06-27 20:43:36,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 20:43:36,937 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 283 transitions, 3514 flow [2024-06-27 20:43:36,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:36,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:36,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:36,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:43:36,938 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:36,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash 101644441, now seen corresponding path program 3 times [2024-06-27 20:43:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127652660] [2024-06-27 20:43:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:37,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:37,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127652660] [2024-06-27 20:43:37,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127652660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:37,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:37,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:37,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343065291] [2024-06-27 20:43:37,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:37,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:37,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:37,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:37,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:37,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:37,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 283 transitions, 3514 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:37,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:37,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:37,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:38,332 INFO L124 PetriNetUnfolderBase]: 785/1392 cut-off events. [2024-06-27 20:43:38,332 INFO L125 PetriNetUnfolderBase]: For 127139/127139 co-relation queries the response was YES. [2024-06-27 20:43:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10302 conditions, 1392 events. 785/1392 cut-off events. For 127139/127139 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7503 event pairs, 162 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 10155. Up to 1294 conditions per place. [2024-06-27 20:43:38,346 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 267 selfloop transitions, 34 changer transitions 0/303 dead transitions. [2024-06-27 20:43:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 303 transitions, 4190 flow [2024-06-27 20:43:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 20:43:38,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 20:43:38,349 INFO L175 Difference]: Start difference. First operand has 330 places, 283 transitions, 3514 flow. Second operand 11 states and 115 transitions. [2024-06-27 20:43:38,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 303 transitions, 4190 flow [2024-06-27 20:43:38,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 303 transitions, 4126 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:38,743 INFO L231 Difference]: Finished difference. Result has 332 places, 284 transitions, 3541 flow [2024-06-27 20:43:38,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3541, PETRI_PLACES=332, PETRI_TRANSITIONS=284} [2024-06-27 20:43:38,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-27 20:43:38,744 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 284 transitions, 3541 flow [2024-06-27 20:43:38,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:38,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:38,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:43:38,744 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:38,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash 110910217, now seen corresponding path program 1 times [2024-06-27 20:43:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224298534] [2024-06-27 20:43:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224298534] [2024-06-27 20:43:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224298534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253118918] [2024-06-27 20:43:39,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:39,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:39,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:39,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 284 transitions, 3541 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:39,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:39,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:39,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:40,081 INFO L124 PetriNetUnfolderBase]: 788/1397 cut-off events. [2024-06-27 20:43:40,082 INFO L125 PetriNetUnfolderBase]: For 126449/126449 co-relation queries the response was YES. [2024-06-27 20:43:40,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10387 conditions, 1397 events. 788/1397 cut-off events. For 126449/126449 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7523 event pairs, 160 based on Foata normal form. 1/1398 useless extension candidates. Maximal degree in co-relation 10239. Up to 1296 conditions per place. [2024-06-27 20:43:40,093 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 37 changer transitions 0/305 dead transitions. [2024-06-27 20:43:40,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 305 transitions, 4268 flow [2024-06-27 20:43:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:43:40,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:43:40,095 INFO L175 Difference]: Start difference. First operand has 332 places, 284 transitions, 3541 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:43:40,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 305 transitions, 4268 flow [2024-06-27 20:43:40,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 305 transitions, 4189 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:40,524 INFO L231 Difference]: Finished difference. Result has 334 places, 286 transitions, 3607 flow [2024-06-27 20:43:40,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3462, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3607, PETRI_PLACES=334, PETRI_TRANSITIONS=286} [2024-06-27 20:43:40,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-27 20:43:40,525 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 286 transitions, 3607 flow [2024-06-27 20:43:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:40,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:40,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:43:40,525 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:40,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1854368647, now seen corresponding path program 4 times [2024-06-27 20:43:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446955190] [2024-06-27 20:43:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:41,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:41,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446955190] [2024-06-27 20:43:41,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446955190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:41,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:41,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:41,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171641579] [2024-06-27 20:43:41,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:41,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:41,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:41,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:41,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 286 transitions, 3607 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:41,909 INFO L124 PetriNetUnfolderBase]: 799/1418 cut-off events. [2024-06-27 20:43:41,909 INFO L125 PetriNetUnfolderBase]: For 142216/142216 co-relation queries the response was YES. [2024-06-27 20:43:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10722 conditions, 1418 events. 799/1418 cut-off events. For 142216/142216 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7679 event pairs, 160 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 10573. Up to 1277 conditions per place. [2024-06-27 20:43:41,970 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 34 changer transitions 0/308 dead transitions. [2024-06-27 20:43:41,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 308 transitions, 4493 flow [2024-06-27 20:43:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:43:41,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:43:41,971 INFO L175 Difference]: Start difference. First operand has 334 places, 286 transitions, 3607 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:43:41,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 308 transitions, 4493 flow [2024-06-27 20:43:42,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 308 transitions, 4391 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:42,438 INFO L231 Difference]: Finished difference. Result has 336 places, 288 transitions, 3615 flow [2024-06-27 20:43:42,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3615, PETRI_PLACES=336, PETRI_TRANSITIONS=288} [2024-06-27 20:43:42,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-27 20:43:42,439 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 288 transitions, 3615 flow [2024-06-27 20:43:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:42,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:42,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:42,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:43:42,439 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:42,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:42,440 INFO L85 PathProgramCache]: Analyzing trace with hash -147710879, now seen corresponding path program 5 times [2024-06-27 20:43:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:42,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381023704] [2024-06-27 20:43:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:42,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381023704] [2024-06-27 20:43:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381023704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:43,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361017027] [2024-06-27 20:43:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:43,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:43,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:43,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 288 transitions, 3615 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:43,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:43,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:43,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:43,757 INFO L124 PetriNetUnfolderBase]: 796/1413 cut-off events. [2024-06-27 20:43:43,757 INFO L125 PetriNetUnfolderBase]: For 136175/136175 co-relation queries the response was YES. [2024-06-27 20:43:43,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10519 conditions, 1413 events. 796/1413 cut-off events. For 136175/136175 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7642 event pairs, 162 based on Foata normal form. 2/1415 useless extension candidates. Maximal degree in co-relation 10369. Up to 1299 conditions per place. [2024-06-27 20:43:43,772 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 271 selfloop transitions, 34 changer transitions 0/307 dead transitions. [2024-06-27 20:43:43,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 307 transitions, 4279 flow [2024-06-27 20:43:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:43:43,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:43:43,773 INFO L175 Difference]: Start difference. First operand has 336 places, 288 transitions, 3615 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:43:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 307 transitions, 4279 flow [2024-06-27 20:43:44,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 307 transitions, 4208 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:44,294 INFO L231 Difference]: Finished difference. Result has 340 places, 288 transitions, 3616 flow [2024-06-27 20:43:44,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3616, PETRI_PLACES=340, PETRI_TRANSITIONS=288} [2024-06-27 20:43:44,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-27 20:43:44,294 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 288 transitions, 3616 flow [2024-06-27 20:43:44,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:44,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:44,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:43:44,295 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:44,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash 882511769, now seen corresponding path program 6 times [2024-06-27 20:43:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:44,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8532493] [2024-06-27 20:43:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8532493] [2024-06-27 20:43:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8532493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:45,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:45,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604779928] [2024-06-27 20:43:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:45,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:45,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:45,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:45,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 288 transitions, 3616 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:45,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:45,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:45,604 INFO L124 PetriNetUnfolderBase]: 800/1421 cut-off events. [2024-06-27 20:43:45,604 INFO L125 PetriNetUnfolderBase]: For 138719/138719 co-relation queries the response was YES. [2024-06-27 20:43:45,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10602 conditions, 1421 events. 800/1421 cut-off events. For 138719/138719 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7697 event pairs, 140 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 10450. Up to 1328 conditions per place. [2024-06-27 20:43:45,621 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 24 changer transitions 0/308 dead transitions. [2024-06-27 20:43:45,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 308 transitions, 4296 flow [2024-06-27 20:43:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:43:45,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 20:43:45,622 INFO L175 Difference]: Start difference. First operand has 340 places, 288 transitions, 3616 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:43:45,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 308 transitions, 4296 flow [2024-06-27 20:43:46,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 308 transitions, 4219 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:46,117 INFO L231 Difference]: Finished difference. Result has 341 places, 289 transitions, 3613 flow [2024-06-27 20:43:46,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3613, PETRI_PLACES=341, PETRI_TRANSITIONS=289} [2024-06-27 20:43:46,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-27 20:43:46,117 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 289 transitions, 3613 flow [2024-06-27 20:43:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:46,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:46,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:46,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:43:46,118 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:46,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 940719539, now seen corresponding path program 7 times [2024-06-27 20:43:46,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:46,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406006491] [2024-06-27 20:43:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:46,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:47,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406006491] [2024-06-27 20:43:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406006491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:47,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340429600] [2024-06-27 20:43:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:47,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:47,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:47,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:47,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 289 transitions, 3613 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:47,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:47,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:47,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:47,666 INFO L124 PetriNetUnfolderBase]: 811/1442 cut-off events. [2024-06-27 20:43:47,666 INFO L125 PetriNetUnfolderBase]: For 151063/151063 co-relation queries the response was YES. [2024-06-27 20:43:47,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10939 conditions, 1442 events. 811/1442 cut-off events. For 151063/151063 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7846 event pairs, 141 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 10786. Up to 1325 conditions per place. [2024-06-27 20:43:47,683 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 33 changer transitions 0/310 dead transitions. [2024-06-27 20:43:47,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 310 transitions, 4519 flow [2024-06-27 20:43:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:43:47,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:43:47,684 INFO L175 Difference]: Start difference. First operand has 341 places, 289 transitions, 3613 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:43:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 310 transitions, 4519 flow [2024-06-27 20:43:48,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 310 transitions, 4455 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:48,191 INFO L231 Difference]: Finished difference. Result has 343 places, 291 transitions, 3665 flow [2024-06-27 20:43:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3665, PETRI_PLACES=343, PETRI_TRANSITIONS=291} [2024-06-27 20:43:48,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-27 20:43:48,191 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 291 transitions, 3665 flow [2024-06-27 20:43:48,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:48,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:48,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:48,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:43:48,191 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:48,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash 940724375, now seen corresponding path program 2 times [2024-06-27 20:43:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185664707] [2024-06-27 20:43:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:48,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:49,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185664707] [2024-06-27 20:43:49,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185664707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:49,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:49,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630864507] [2024-06-27 20:43:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:49,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:49,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:49,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 291 transitions, 3665 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:49,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:49,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:49,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:49,551 INFO L124 PetriNetUnfolderBase]: 808/1437 cut-off events. [2024-06-27 20:43:49,551 INFO L125 PetriNetUnfolderBase]: For 144597/144597 co-relation queries the response was YES. [2024-06-27 20:43:49,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10827 conditions, 1437 events. 808/1437 cut-off events. For 144597/144597 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7812 event pairs, 143 based on Foata normal form. 1/1438 useless extension candidates. Maximal degree in co-relation 10673. Up to 1336 conditions per place. [2024-06-27 20:43:49,567 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 36 changer transitions 0/309 dead transitions. [2024-06-27 20:43:49,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 309 transitions, 4339 flow [2024-06-27 20:43:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:43:49,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:43:49,568 INFO L175 Difference]: Start difference. First operand has 343 places, 291 transitions, 3665 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:43:49,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 309 transitions, 4339 flow [2024-06-27 20:43:50,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 309 transitions, 4250 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:50,094 INFO L231 Difference]: Finished difference. Result has 347 places, 291 transitions, 3656 flow [2024-06-27 20:43:50,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3656, PETRI_PLACES=347, PETRI_TRANSITIONS=291} [2024-06-27 20:43:50,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-27 20:43:50,095 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 291 transitions, 3656 flow [2024-06-27 20:43:50,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:50,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:50,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:43:50,095 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:50,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash 940724189, now seen corresponding path program 8 times [2024-06-27 20:43:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:50,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864950778] [2024-06-27 20:43:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:51,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:51,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864950778] [2024-06-27 20:43:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864950778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:51,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295607065] [2024-06-27 20:43:51,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:51,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:51,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:51,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:51,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:51,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 291 transitions, 3656 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:51,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:51,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:51,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:51,653 INFO L124 PetriNetUnfolderBase]: 805/1432 cut-off events. [2024-06-27 20:43:51,654 INFO L125 PetriNetUnfolderBase]: For 142356/142356 co-relation queries the response was YES. [2024-06-27 20:43:51,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10625 conditions, 1432 events. 805/1432 cut-off events. For 142356/142356 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7800 event pairs, 142 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 10469. Up to 1334 conditions per place. [2024-06-27 20:43:51,677 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 33 changer transitions 0/309 dead transitions. [2024-06-27 20:43:51,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 309 transitions, 4326 flow [2024-06-27 20:43:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:43:51,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:43:51,679 INFO L175 Difference]: Start difference. First operand has 347 places, 291 transitions, 3656 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:43:51,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 309 transitions, 4326 flow [2024-06-27 20:43:52,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 309 transitions, 4118 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:52,264 INFO L231 Difference]: Finished difference. Result has 345 places, 291 transitions, 3519 flow [2024-06-27 20:43:52,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3448, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3519, PETRI_PLACES=345, PETRI_TRANSITIONS=291} [2024-06-27 20:43:52,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-27 20:43:52,265 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 291 transitions, 3519 flow [2024-06-27 20:43:52,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:52,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:52,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:52,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:43:52,265 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:52,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash -777739487, now seen corresponding path program 9 times [2024-06-27 20:43:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:52,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263425423] [2024-06-27 20:43:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:53,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263425423] [2024-06-27 20:43:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263425423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957510762] [2024-06-27 20:43:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:53,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:53,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 291 transitions, 3519 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:53,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:53,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:53,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:53,680 INFO L124 PetriNetUnfolderBase]: 809/1440 cut-off events. [2024-06-27 20:43:53,680 INFO L125 PetriNetUnfolderBase]: For 144632/144632 co-relation queries the response was YES. [2024-06-27 20:43:53,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10557 conditions, 1440 events. 809/1440 cut-off events. For 144632/144632 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7882 event pairs, 142 based on Foata normal form. 2/1442 useless extension candidates. Maximal degree in co-relation 10400. Up to 1302 conditions per place. [2024-06-27 20:43:53,694 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 33 changer transitions 0/310 dead transitions. [2024-06-27 20:43:53,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 310 transitions, 4207 flow [2024-06-27 20:43:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:43:53,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:43:53,695 INFO L175 Difference]: Start difference. First operand has 345 places, 291 transitions, 3519 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:43:53,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 310 transitions, 4207 flow [2024-06-27 20:43:54,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 310 transitions, 4133 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:54,268 INFO L231 Difference]: Finished difference. Result has 345 places, 292 transitions, 3541 flow [2024-06-27 20:43:54,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3541, PETRI_PLACES=345, PETRI_TRANSITIONS=292} [2024-06-27 20:43:54,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-27 20:43:54,269 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 292 transitions, 3541 flow [2024-06-27 20:43:54,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:54,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:54,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:54,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:43:54,269 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:54,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 292222795, now seen corresponding path program 10 times [2024-06-27 20:43:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:54,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831758912] [2024-06-27 20:43:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:55,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831758912] [2024-06-27 20:43:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831758912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978943072] [2024-06-27 20:43:55,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:55,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:55,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:55,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 292 transitions, 3541 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:55,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:55,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:55,853 INFO L124 PetriNetUnfolderBase]: 813/1448 cut-off events. [2024-06-27 20:43:55,853 INFO L125 PetriNetUnfolderBase]: For 145017/145017 co-relation queries the response was YES. [2024-06-27 20:43:55,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10625 conditions, 1448 events. 813/1448 cut-off events. For 145017/145017 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7926 event pairs, 130 based on Foata normal form. 2/1450 useless extension candidates. Maximal degree in co-relation 10468. Up to 1270 conditions per place. [2024-06-27 20:43:55,866 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 254 selfloop transitions, 55 changer transitions 0/311 dead transitions. [2024-06-27 20:43:55,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 311 transitions, 4243 flow [2024-06-27 20:43:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:43:55,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:43:55,867 INFO L175 Difference]: Start difference. First operand has 345 places, 292 transitions, 3541 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:43:55,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 311 transitions, 4243 flow [2024-06-27 20:43:56,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 311 transitions, 4157 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:56,408 INFO L231 Difference]: Finished difference. Result has 347 places, 293 transitions, 3597 flow [2024-06-27 20:43:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3597, PETRI_PLACES=347, PETRI_TRANSITIONS=293} [2024-06-27 20:43:56,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-27 20:43:56,409 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 293 transitions, 3597 flow [2024-06-27 20:43:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:56,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:56,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:56,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:43:56,410 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:56,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 292218145, now seen corresponding path program 11 times [2024-06-27 20:43:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052560661] [2024-06-27 20:43:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052560661] [2024-06-27 20:43:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052560661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720206361] [2024-06-27 20:43:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:57,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 293 transitions, 3597 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:57,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:57,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:57,869 INFO L124 PetriNetUnfolderBase]: 824/1469 cut-off events. [2024-06-27 20:43:57,869 INFO L125 PetriNetUnfolderBase]: For 158535/158535 co-relation queries the response was YES. [2024-06-27 20:43:57,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11046 conditions, 1469 events. 824/1469 cut-off events. For 158535/158535 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8090 event pairs, 131 based on Foata normal form. 2/1471 useless extension candidates. Maximal degree in co-relation 10888. Up to 1268 conditions per place. [2024-06-27 20:43:57,885 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 255 selfloop transitions, 57 changer transitions 0/314 dead transitions. [2024-06-27 20:43:57,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 314 transitions, 4533 flow [2024-06-27 20:43:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:43:57,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:43:57,886 INFO L175 Difference]: Start difference. First operand has 347 places, 293 transitions, 3597 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:43:57,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 314 transitions, 4533 flow [2024-06-27 20:43:58,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 314 transitions, 4401 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:58,468 INFO L231 Difference]: Finished difference. Result has 349 places, 295 transitions, 3641 flow [2024-06-27 20:43:58,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3641, PETRI_PLACES=349, PETRI_TRANSITIONS=295} [2024-06-27 20:43:58,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 20:43:58,469 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 295 transitions, 3641 flow [2024-06-27 20:43:58,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:58,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:58,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:58,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:43:58,469 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:58,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1662603613, now seen corresponding path program 12 times [2024-06-27 20:43:58,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:58,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616703366] [2024-06-27 20:43:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616703366] [2024-06-27 20:43:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616703366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:59,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922264153] [2024-06-27 20:43:59,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:59,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:59,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:59,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 295 transitions, 3641 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:59,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:59,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:59,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:59,856 INFO L124 PetriNetUnfolderBase]: 821/1464 cut-off events. [2024-06-27 20:43:59,856 INFO L125 PetriNetUnfolderBase]: For 151257/151257 co-relation queries the response was YES. [2024-06-27 20:43:59,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10810 conditions, 1464 events. 821/1464 cut-off events. For 151257/151257 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8062 event pairs, 130 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 10651. Up to 1286 conditions per place. [2024-06-27 20:43:59,873 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 60 changer transitions 0/313 dead transitions. [2024-06-27 20:43:59,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 313 transitions, 4321 flow [2024-06-27 20:43:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:43:59,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:43:59,873 INFO L175 Difference]: Start difference. First operand has 349 places, 295 transitions, 3641 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:43:59,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 313 transitions, 4321 flow [2024-06-27 20:44:00,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 313 transitions, 4199 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 20:44:00,405 INFO L231 Difference]: Finished difference. Result has 353 places, 295 transitions, 3643 flow [2024-06-27 20:44:00,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3519, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3643, PETRI_PLACES=353, PETRI_TRANSITIONS=295} [2024-06-27 20:44:00,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-27 20:44:00,406 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 295 transitions, 3643 flow [2024-06-27 20:44:00,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:00,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:00,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:00,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 20:44:00,406 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:00,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1662357349, now seen corresponding path program 1 times [2024-06-27 20:44:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:00,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145082667] [2024-06-27 20:44:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:00,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145082667] [2024-06-27 20:44:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145082667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:01,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:01,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878742248] [2024-06-27 20:44:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:01,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:01,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 295 transitions, 3643 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:01,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:01,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:01,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:02,073 INFO L124 PetriNetUnfolderBase]: 841/1508 cut-off events. [2024-06-27 20:44:02,073 INFO L125 PetriNetUnfolderBase]: For 203713/203713 co-relation queries the response was YES. [2024-06-27 20:44:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1508 events. 841/1508 cut-off events. For 203713/203713 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8333 event pairs, 140 based on Foata normal form. 12/1520 useless extension candidates. Maximal degree in co-relation 10907. Up to 1198 conditions per place. [2024-06-27 20:44:02,089 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 233 selfloop transitions, 70 changer transitions 15/320 dead transitions. [2024-06-27 20:44:02,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 320 transitions, 4421 flow [2024-06-27 20:44:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:44:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:44:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 20:44:02,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-27 20:44:02,090 INFO L175 Difference]: Start difference. First operand has 353 places, 295 transitions, 3643 flow. Second operand 12 states and 133 transitions. [2024-06-27 20:44:02,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 320 transitions, 4421 flow [2024-06-27 20:44:02,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 320 transitions, 4295 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:02,635 INFO L231 Difference]: Finished difference. Result has 355 places, 286 transitions, 3570 flow [2024-06-27 20:44:02,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3570, PETRI_PLACES=355, PETRI_TRANSITIONS=286} [2024-06-27 20:44:02,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-27 20:44:02,636 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 286 transitions, 3570 flow [2024-06-27 20:44:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:02,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:02,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:02,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 20:44:02,637 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:02,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 121520365, now seen corresponding path program 13 times [2024-06-27 20:44:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769368165] [2024-06-27 20:44:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:02,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:03,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:03,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769368165] [2024-06-27 20:44:03,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769368165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:03,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:03,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989000780] [2024-06-27 20:44:03,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:03,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:03,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:03,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:03,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:03,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:03,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 286 transitions, 3570 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:03,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:03,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:04,134 INFO L124 PetriNetUnfolderBase]: 795/1442 cut-off events. [2024-06-27 20:44:04,134 INFO L125 PetriNetUnfolderBase]: For 155541/155541 co-relation queries the response was YES. [2024-06-27 20:44:04,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10770 conditions, 1442 events. 795/1442 cut-off events. For 155541/155541 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8085 event pairs, 148 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 10608. Up to 1264 conditions per place. [2024-06-27 20:44:04,151 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 252 selfloop transitions, 51 changer transitions 0/305 dead transitions. [2024-06-27 20:44:04,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 305 transitions, 4264 flow [2024-06-27 20:44:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:44:04,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:44:04,152 INFO L175 Difference]: Start difference. First operand has 355 places, 286 transitions, 3570 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:44:04,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 305 transitions, 4264 flow [2024-06-27 20:44:04,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 305 transitions, 4100 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:04,751 INFO L231 Difference]: Finished difference. Result has 356 places, 287 transitions, 3544 flow [2024-06-27 20:44:04,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3544, PETRI_PLACES=356, PETRI_TRANSITIONS=287} [2024-06-27 20:44:04,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-27 20:44:04,752 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 287 transitions, 3544 flow [2024-06-27 20:44:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:04,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:04,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:04,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 20:44:04,752 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:04,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash 121515715, now seen corresponding path program 14 times [2024-06-27 20:44:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:04,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305787691] [2024-06-27 20:44:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:04,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:05,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305787691] [2024-06-27 20:44:05,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305787691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:05,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:05,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:05,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292157735] [2024-06-27 20:44:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:05,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:05,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:05,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:05,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:05,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 287 transitions, 3544 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:05,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:05,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:05,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:06,248 INFO L124 PetriNetUnfolderBase]: 799/1450 cut-off events. [2024-06-27 20:44:06,249 INFO L125 PetriNetUnfolderBase]: For 160079/160079 co-relation queries the response was YES. [2024-06-27 20:44:06,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 1450 events. 799/1450 cut-off events. For 160079/160079 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8157 event pairs, 148 based on Foata normal form. 2/1452 useless extension candidates. Maximal degree in co-relation 10623. Up to 1258 conditions per place. [2024-06-27 20:44:06,265 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 252 selfloop transitions, 52 changer transitions 0/306 dead transitions. [2024-06-27 20:44:06,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 306 transitions, 4238 flow [2024-06-27 20:44:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:44:06,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:44:06,266 INFO L175 Difference]: Start difference. First operand has 356 places, 287 transitions, 3544 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:44:06,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 306 transitions, 4238 flow [2024-06-27 20:44:06,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 306 transitions, 4110 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:06,857 INFO L231 Difference]: Finished difference. Result has 358 places, 288 transitions, 3558 flow [2024-06-27 20:44:06,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3558, PETRI_PLACES=358, PETRI_TRANSITIONS=288} [2024-06-27 20:44:06,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-27 20:44:06,857 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 288 transitions, 3558 flow [2024-06-27 20:44:06,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:06,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:06,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:06,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 20:44:06,858 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:06,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 121400395, now seen corresponding path program 15 times [2024-06-27 20:44:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972587813] [2024-06-27 20:44:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972587813] [2024-06-27 20:44:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972587813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996292289] [2024-06-27 20:44:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:07,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:07,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 288 transitions, 3558 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:07,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:07,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:07,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:08,285 INFO L124 PetriNetUnfolderBase]: 803/1458 cut-off events. [2024-06-27 20:44:08,285 INFO L125 PetriNetUnfolderBase]: For 163237/163237 co-relation queries the response was YES. [2024-06-27 20:44:08,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10854 conditions, 1458 events. 803/1458 cut-off events. For 163237/163237 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8210 event pairs, 152 based on Foata normal form. 2/1460 useless extension candidates. Maximal degree in co-relation 10690. Up to 1218 conditions per place. [2024-06-27 20:44:08,302 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 249 selfloop transitions, 56 changer transitions 0/307 dead transitions. [2024-06-27 20:44:08,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 307 transitions, 4252 flow [2024-06-27 20:44:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:44:08,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:44:08,303 INFO L175 Difference]: Start difference. First operand has 358 places, 288 transitions, 3558 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:44:08,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 307 transitions, 4252 flow [2024-06-27 20:44:08,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 307 transitions, 4120 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:08,845 INFO L231 Difference]: Finished difference. Result has 360 places, 289 transitions, 3578 flow [2024-06-27 20:44:08,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3578, PETRI_PLACES=360, PETRI_TRANSITIONS=289} [2024-06-27 20:44:08,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 20:44:08,846 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 289 transitions, 3578 flow [2024-06-27 20:44:08,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:08,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:08,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:08,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 20:44:08,846 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:08,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:08,846 INFO L85 PathProgramCache]: Analyzing trace with hash 587622617, now seen corresponding path program 16 times [2024-06-27 20:44:08,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:08,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3170016] [2024-06-27 20:44:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:09,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:09,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3170016] [2024-06-27 20:44:09,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3170016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:09,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:09,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443607092] [2024-06-27 20:44:09,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:09,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:09,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:09,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:09,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:09,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 289 transitions, 3578 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:09,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:09,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:09,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:10,133 INFO L124 PetriNetUnfolderBase]: 807/1466 cut-off events. [2024-06-27 20:44:10,134 INFO L125 PetriNetUnfolderBase]: For 166492/166492 co-relation queries the response was YES. [2024-06-27 20:44:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 1466 events. 807/1466 cut-off events. For 166492/166492 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8298 event pairs, 150 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 10771. Up to 1266 conditions per place. [2024-06-27 20:44:10,151 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 270 selfloop transitions, 35 changer transitions 0/307 dead transitions. [2024-06-27 20:44:10,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 307 transitions, 4264 flow [2024-06-27 20:44:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:44:10,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 20:44:10,156 INFO L175 Difference]: Start difference. First operand has 360 places, 289 transitions, 3578 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:44:10,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 307 transitions, 4264 flow [2024-06-27 20:44:10,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 307 transitions, 4122 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:10,746 INFO L231 Difference]: Finished difference. Result has 361 places, 290 transitions, 3554 flow [2024-06-27 20:44:10,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=361, PETRI_TRANSITIONS=290} [2024-06-27 20:44:10,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-27 20:44:10,747 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 290 transitions, 3554 flow [2024-06-27 20:44:10,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:10,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:10,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:10,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 20:44:10,747 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:10,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1946369319, now seen corresponding path program 17 times [2024-06-27 20:44:10,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:10,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661921251] [2024-06-27 20:44:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:10,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:11,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661921251] [2024-06-27 20:44:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661921251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:11,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:11,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599712038] [2024-06-27 20:44:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:11,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:11,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:11,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 290 transitions, 3554 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:11,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:11,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:11,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:12,230 INFO L124 PetriNetUnfolderBase]: 818/1487 cut-off events. [2024-06-27 20:44:12,230 INFO L125 PetriNetUnfolderBase]: For 181467/181467 co-relation queries the response was YES. [2024-06-27 20:44:12,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11331 conditions, 1487 events. 818/1487 cut-off events. For 181467/181467 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8451 event pairs, 164 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 11165. Up to 1192 conditions per place. [2024-06-27 20:44:12,248 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 251 selfloop transitions, 57 changer transitions 0/310 dead transitions. [2024-06-27 20:44:12,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 310 transitions, 4506 flow [2024-06-27 20:44:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:44:12,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:44:12,249 INFO L175 Difference]: Start difference. First operand has 361 places, 290 transitions, 3554 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:44:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 310 transitions, 4506 flow [2024-06-27 20:44:12,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 310 transitions, 4386 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:12,859 INFO L231 Difference]: Finished difference. Result has 363 places, 292 transitions, 3640 flow [2024-06-27 20:44:12,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3640, PETRI_PLACES=363, PETRI_TRANSITIONS=292} [2024-06-27 20:44:12,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-27 20:44:12,859 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 292 transitions, 3640 flow [2024-06-27 20:44:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:12,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:12,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:12,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 20:44:12,860 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:12,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash 645830387, now seen corresponding path program 18 times [2024-06-27 20:44:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:12,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481406192] [2024-06-27 20:44:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:12,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481406192] [2024-06-27 20:44:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481406192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:13,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:13,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:13,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000437874] [2024-06-27 20:44:13,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:13,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:13,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:13,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:13,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 292 transitions, 3640 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:13,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:13,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:13,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:14,386 INFO L124 PetriNetUnfolderBase]: 822/1495 cut-off events. [2024-06-27 20:44:14,386 INFO L125 PetriNetUnfolderBase]: For 174765/174765 co-relation queries the response was YES. [2024-06-27 20:44:14,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11332 conditions, 1495 events. 822/1495 cut-off events. For 174765/174765 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8506 event pairs, 163 based on Foata normal form. 2/1497 useless extension candidates. Maximal degree in co-relation 11165. Up to 1268 conditions per place. [2024-06-27 20:44:14,405 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 251 selfloop transitions, 58 changer transitions 0/311 dead transitions. [2024-06-27 20:44:14,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 311 transitions, 4552 flow [2024-06-27 20:44:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:44:14,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:44:14,406 INFO L175 Difference]: Start difference. First operand has 363 places, 292 transitions, 3640 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:44:14,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 311 transitions, 4552 flow [2024-06-27 20:44:15,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 311 transitions, 4443 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:44:15,067 INFO L231 Difference]: Finished difference. Result has 366 places, 293 transitions, 3691 flow [2024-06-27 20:44:15,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3691, PETRI_PLACES=366, PETRI_TRANSITIONS=293} [2024-06-27 20:44:15,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 20:44:15,068 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 293 transitions, 3691 flow [2024-06-27 20:44:15,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:15,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:15,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:15,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 20:44:15,069 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:15,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash 645835037, now seen corresponding path program 19 times [2024-06-27 20:44:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:15,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835786690] [2024-06-27 20:44:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:15,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:16,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835786690] [2024-06-27 20:44:16,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835786690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:16,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:16,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:16,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911260220] [2024-06-27 20:44:16,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:16,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:16,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:16,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:16,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:16,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 293 transitions, 3691 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:16,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:16,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:16,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:16,570 INFO L124 PetriNetUnfolderBase]: 819/1490 cut-off events. [2024-06-27 20:44:16,570 INFO L125 PetriNetUnfolderBase]: For 163030/163030 co-relation queries the response was YES. [2024-06-27 20:44:16,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11114 conditions, 1490 events. 819/1490 cut-off events. For 163030/163030 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8481 event pairs, 171 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 10946. Up to 1314 conditions per place. [2024-06-27 20:44:16,588 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 250 selfloop transitions, 58 changer transitions 0/310 dead transitions. [2024-06-27 20:44:16,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 310 transitions, 4359 flow [2024-06-27 20:44:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:44:16,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:44:16,589 INFO L175 Difference]: Start difference. First operand has 366 places, 293 transitions, 3691 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:44:16,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 310 transitions, 4359 flow [2024-06-27 20:44:17,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 310 transitions, 4194 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:17,175 INFO L231 Difference]: Finished difference. Result has 366 places, 293 transitions, 3653 flow [2024-06-27 20:44:17,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3653, PETRI_PLACES=366, PETRI_TRANSITIONS=293} [2024-06-27 20:44:17,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 20:44:17,176 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 293 transitions, 3653 flow [2024-06-27 20:44:17,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:17,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:17,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:17,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 20:44:17,177 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:17,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash 645835223, now seen corresponding path program 3 times [2024-06-27 20:44:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:17,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620486603] [2024-06-27 20:44:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:17,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:18,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620486603] [2024-06-27 20:44:18,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620486603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:18,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:18,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426741977] [2024-06-27 20:44:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:18,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:18,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:18,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 293 transitions, 3653 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:18,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:18,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:18,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:18,726 INFO L124 PetriNetUnfolderBase]: 817/1487 cut-off events. [2024-06-27 20:44:18,726 INFO L125 PetriNetUnfolderBase]: For 148669/148669 co-relation queries the response was YES. [2024-06-27 20:44:18,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10866 conditions, 1487 events. 817/1487 cut-off events. For 148669/148669 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8463 event pairs, 171 based on Foata normal form. 1/1488 useless extension candidates. Maximal degree in co-relation 10699. Up to 1302 conditions per place. [2024-06-27 20:44:18,744 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 63 changer transitions 0/312 dead transitions. [2024-06-27 20:44:18,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 312 transitions, 4399 flow [2024-06-27 20:44:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:44:18,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:44:18,745 INFO L175 Difference]: Start difference. First operand has 366 places, 293 transitions, 3653 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:44:18,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 312 transitions, 4399 flow [2024-06-27 20:44:19,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 312 transitions, 4269 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:19,270 INFO L231 Difference]: Finished difference. Result has 366 places, 295 transitions, 3739 flow [2024-06-27 20:44:19,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3739, PETRI_PLACES=366, PETRI_TRANSITIONS=295} [2024-06-27 20:44:19,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 20:44:19,270 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 295 transitions, 3739 flow [2024-06-27 20:44:19,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:19,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:19,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:19,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 20:44:19,271 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:19,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1298460205, now seen corresponding path program 1 times [2024-06-27 20:44:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:19,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901603207] [2024-06-27 20:44:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:20,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:20,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901603207] [2024-06-27 20:44:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901603207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:20,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679235784] [2024-06-27 20:44:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:20,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:20,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:20,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 295 transitions, 3739 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:20,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:20,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:20,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:20,838 INFO L124 PetriNetUnfolderBase]: 823/1497 cut-off events. [2024-06-27 20:44:20,839 INFO L125 PetriNetUnfolderBase]: For 153935/153935 co-relation queries the response was YES. [2024-06-27 20:44:20,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1497 events. 823/1497 cut-off events. For 153935/153935 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8541 event pairs, 149 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 10794. Up to 1340 conditions per place. [2024-06-27 20:44:20,866 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 268 selfloop transitions, 46 changer transitions 0/316 dead transitions. [2024-06-27 20:44:20,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 316 transitions, 4483 flow [2024-06-27 20:44:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 20:44:20,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 20:44:20,868 INFO L175 Difference]: Start difference. First operand has 366 places, 295 transitions, 3739 flow. Second operand 11 states and 115 transitions. [2024-06-27 20:44:20,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 316 transitions, 4483 flow [2024-06-27 20:44:21,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 316 transitions, 4315 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:21,580 INFO L231 Difference]: Finished difference. Result has 367 places, 297 transitions, 3724 flow [2024-06-27 20:44:21,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3724, PETRI_PLACES=367, PETRI_TRANSITIONS=297} [2024-06-27 20:44:21,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-27 20:44:21,580 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 297 transitions, 3724 flow [2024-06-27 20:44:21,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:21,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:21,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:21,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 20:44:21,581 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:21,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash -150828299, now seen corresponding path program 20 times [2024-06-27 20:44:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054728102] [2024-06-27 20:44:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:22,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054728102] [2024-06-27 20:44:22,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054728102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:22,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:22,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323577954] [2024-06-27 20:44:22,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:22,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:22,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:22,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:22,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 297 transitions, 3724 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:22,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:22,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:22,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:23,088 INFO L124 PetriNetUnfolderBase]: 827/1505 cut-off events. [2024-06-27 20:44:23,089 INFO L125 PetriNetUnfolderBase]: For 152404/152404 co-relation queries the response was YES. [2024-06-27 20:44:23,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1505 events. 827/1505 cut-off events. For 152404/152404 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8583 event pairs, 145 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 10794. Up to 1239 conditions per place. [2024-06-27 20:44:23,107 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 72 changer transitions 0/314 dead transitions. [2024-06-27 20:44:23,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 314 transitions, 4430 flow [2024-06-27 20:44:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:44:23,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:44:23,108 INFO L175 Difference]: Start difference. First operand has 367 places, 297 transitions, 3724 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:44:23,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 314 transitions, 4430 flow [2024-06-27 20:44:23,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 314 transitions, 4305 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:23,746 INFO L231 Difference]: Finished difference. Result has 368 places, 298 transitions, 3781 flow [2024-06-27 20:44:23,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3781, PETRI_PLACES=368, PETRI_TRANSITIONS=298} [2024-06-27 20:44:23,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-27 20:44:23,746 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 298 transitions, 3781 flow [2024-06-27 20:44:23,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:23,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:23,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:23,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 20:44:23,746 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:23,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1836026125, now seen corresponding path program 21 times [2024-06-27 20:44:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:23,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716671235] [2024-06-27 20:44:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:23,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:24,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:24,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716671235] [2024-06-27 20:44:24,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716671235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:24,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:24,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:24,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249107115] [2024-06-27 20:44:24,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:24,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:24,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:24,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:24,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:24,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 298 transitions, 3781 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:24,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:24,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:24,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:25,221 INFO L124 PetriNetUnfolderBase]: 831/1513 cut-off events. [2024-06-27 20:44:25,221 INFO L125 PetriNetUnfolderBase]: For 155720/155720 co-relation queries the response was YES. [2024-06-27 20:44:25,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 1513 events. 831/1513 cut-off events. For 155720/155720 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8652 event pairs, 143 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 10925. Up to 1219 conditions per place. [2024-06-27 20:44:25,246 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 74 changer transitions 0/315 dead transitions. [2024-06-27 20:44:25,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 315 transitions, 4487 flow [2024-06-27 20:44:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:44:25,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:44:25,247 INFO L175 Difference]: Start difference. First operand has 368 places, 298 transitions, 3781 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:44:25,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 315 transitions, 4487 flow [2024-06-27 20:44:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 315 transitions, 4315 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:25,846 INFO L231 Difference]: Finished difference. Result has 370 places, 299 transitions, 3797 flow [2024-06-27 20:44:25,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3611, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3797, PETRI_PLACES=370, PETRI_TRANSITIONS=299} [2024-06-27 20:44:25,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 20:44:25,847 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 299 transitions, 3797 flow [2024-06-27 20:44:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:25,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 20:44:25,847 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:25,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -150948269, now seen corresponding path program 22 times [2024-06-27 20:44:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27191073] [2024-06-27 20:44:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:26,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27191073] [2024-06-27 20:44:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27191073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:26,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448983225] [2024-06-27 20:44:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:26,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:26,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:26,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:26,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 299 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:26,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:26,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:26,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:27,248 INFO L124 PetriNetUnfolderBase]: 842/1534 cut-off events. [2024-06-27 20:44:27,248 INFO L125 PetriNetUnfolderBase]: For 167162/167162 co-relation queries the response was YES. [2024-06-27 20:44:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11457 conditions, 1534 events. 842/1534 cut-off events. For 167162/167162 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8818 event pairs, 148 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 11289. Up to 1149 conditions per place. [2024-06-27 20:44:27,268 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 236 selfloop transitions, 80 changer transitions 0/318 dead transitions. [2024-06-27 20:44:27,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 318 transitions, 4747 flow [2024-06-27 20:44:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:44:27,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:44:27,269 INFO L175 Difference]: Start difference. First operand has 370 places, 299 transitions, 3797 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:44:27,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 318 transitions, 4747 flow [2024-06-27 20:44:27,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 318 transitions, 4567 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:27,914 INFO L231 Difference]: Finished difference. Result has 372 places, 301 transitions, 3851 flow [2024-06-27 20:44:27,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3851, PETRI_PLACES=372, PETRI_TRANSITIONS=301} [2024-06-27 20:44:27,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-27 20:44:27,914 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 301 transitions, 3851 flow [2024-06-27 20:44:27,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:27,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:27,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 20:44:27,915 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:27,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1831372901, now seen corresponding path program 2 times [2024-06-27 20:44:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44195412] [2024-06-27 20:44:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:28,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:28,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44195412] [2024-06-27 20:44:28,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44195412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:28,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:28,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:28,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36242325] [2024-06-27 20:44:28,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:28,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:28,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:28,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:28,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 301 transitions, 3851 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:28,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:28,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:29,274 INFO L124 PetriNetUnfolderBase]: 838/1528 cut-off events. [2024-06-27 20:44:29,274 INFO L125 PetriNetUnfolderBase]: For 156000/156000 co-relation queries the response was YES. [2024-06-27 20:44:29,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11186 conditions, 1528 events. 838/1528 cut-off events. For 156000/156000 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8801 event pairs, 132 based on Foata normal form. 2/1530 useless extension candidates. Maximal degree in co-relation 11017. Up to 1139 conditions per place. [2024-06-27 20:44:29,291 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 112 changer transitions 0/318 dead transitions. [2024-06-27 20:44:29,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 318 transitions, 4549 flow [2024-06-27 20:44:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:44:29,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:44:29,292 INFO L175 Difference]: Start difference. First operand has 372 places, 301 transitions, 3851 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:44:29,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 318 transitions, 4549 flow [2024-06-27 20:44:29,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 318 transitions, 4406 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 20:44:29,906 INFO L231 Difference]: Finished difference. Result has 377 places, 302 transitions, 3998 flow [2024-06-27 20:44:29,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3998, PETRI_PLACES=377, PETRI_TRANSITIONS=302} [2024-06-27 20:44:29,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-27 20:44:29,907 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 302 transitions, 3998 flow [2024-06-27 20:44:29,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:29,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:29,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 20:44:29,907 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:29,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 19874131, now seen corresponding path program 23 times [2024-06-27 20:44:29,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:29,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543566075] [2024-06-27 20:44:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:29,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:30,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543566075] [2024-06-27 20:44:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543566075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:30,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738405134] [2024-06-27 20:44:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:30,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:30,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 302 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:30,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:30,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:30,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:31,393 INFO L124 PetriNetUnfolderBase]: 842/1536 cut-off events. [2024-06-27 20:44:31,393 INFO L125 PetriNetUnfolderBase]: For 158679/158679 co-relation queries the response was YES. [2024-06-27 20:44:31,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11496 conditions, 1536 events. 842/1536 cut-off events. For 158679/158679 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8879 event pairs, 134 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11324. Up to 1270 conditions per place. [2024-06-27 20:44:31,412 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 78 changer transitions 0/319 dead transitions. [2024-06-27 20:44:31,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 319 transitions, 4710 flow [2024-06-27 20:44:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:44:31,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:44:31,414 INFO L175 Difference]: Start difference. First operand has 377 places, 302 transitions, 3998 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:44:31,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 319 transitions, 4710 flow [2024-06-27 20:44:31,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 319 transitions, 4340 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:31,971 INFO L231 Difference]: Finished difference. Result has 376 places, 303 transitions, 3818 flow [2024-06-27 20:44:31,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3818, PETRI_PLACES=376, PETRI_TRANSITIONS=303} [2024-06-27 20:44:31,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-27 20:44:31,972 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 303 transitions, 3818 flow [2024-06-27 20:44:31,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:31,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:31,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:31,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 20:44:31,972 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:31,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash 19869481, now seen corresponding path program 24 times [2024-06-27 20:44:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849323259] [2024-06-27 20:44:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:31,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:32,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849323259] [2024-06-27 20:44:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849323259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:32,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048475094] [2024-06-27 20:44:32,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:32,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:32,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:33,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:33,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 303 transitions, 3818 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:33,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:33,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:33,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:33,428 INFO L124 PetriNetUnfolderBase]: 846/1544 cut-off events. [2024-06-27 20:44:33,428 INFO L125 PetriNetUnfolderBase]: For 155724/155724 co-relation queries the response was YES. [2024-06-27 20:44:33,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11359 conditions, 1544 events. 846/1544 cut-off events. For 155724/155724 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8936 event pairs, 134 based on Foata normal form. 2/1546 useless extension candidates. Maximal degree in co-relation 11186. Up to 1235 conditions per place. [2024-06-27 20:44:33,448 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 82 changer transitions 0/321 dead transitions. [2024-06-27 20:44:33,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 321 transitions, 4742 flow [2024-06-27 20:44:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:44:33,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:44:33,449 INFO L175 Difference]: Start difference. First operand has 376 places, 303 transitions, 3818 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:44:33,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 321 transitions, 4742 flow [2024-06-27 20:44:34,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 321 transitions, 4572 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:34,051 INFO L231 Difference]: Finished difference. Result has 378 places, 304 transitions, 3846 flow [2024-06-27 20:44:34,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3846, PETRI_PLACES=378, PETRI_TRANSITIONS=304} [2024-06-27 20:44:34,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-27 20:44:34,052 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 304 transitions, 3846 flow [2024-06-27 20:44:34,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:34,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:34,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 20:44:34,053 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:34,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash 26303221, now seen corresponding path program 25 times [2024-06-27 20:44:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266151584] [2024-06-27 20:44:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:35,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266151584] [2024-06-27 20:44:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266151584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:35,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:35,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190880838] [2024-06-27 20:44:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:35,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:35,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:35,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 304 transitions, 3846 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:35,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:35,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:35,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:35,519 INFO L124 PetriNetUnfolderBase]: 843/1539 cut-off events. [2024-06-27 20:44:35,520 INFO L125 PetriNetUnfolderBase]: For 147508/147508 co-relation queries the response was YES. [2024-06-27 20:44:35,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11132 conditions, 1539 events. 843/1539 cut-off events. For 147508/147508 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8889 event pairs, 133 based on Foata normal form. 2/1541 useless extension candidates. Maximal degree in co-relation 10958. Up to 1273 conditions per place. [2024-06-27 20:44:35,540 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 86 changer transitions 0/320 dead transitions. [2024-06-27 20:44:35,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 320 transitions, 4534 flow [2024-06-27 20:44:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:44:35,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:44:35,541 INFO L175 Difference]: Start difference. First operand has 378 places, 304 transitions, 3846 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:44:35,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 320 transitions, 4534 flow [2024-06-27 20:44:36,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 320 transitions, 4318 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:36,105 INFO L231 Difference]: Finished difference. Result has 379 places, 304 transitions, 3808 flow [2024-06-27 20:44:36,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3808, PETRI_PLACES=379, PETRI_TRANSITIONS=304} [2024-06-27 20:44:36,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-27 20:44:36,105 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 304 transitions, 3808 flow [2024-06-27 20:44:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:36,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:36,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 20:44:36,106 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2000066321, now seen corresponding path program 2 times [2024-06-27 20:44:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:36,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396536950] [2024-06-27 20:44:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396536950] [2024-06-27 20:44:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396536950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:37,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:37,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863237767] [2024-06-27 20:44:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:37,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:37,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:37,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:37,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 304 transitions, 3808 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:37,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:37,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:37,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:37,700 INFO L124 PetriNetUnfolderBase]: 847/1547 cut-off events. [2024-06-27 20:44:37,700 INFO L125 PetriNetUnfolderBase]: For 146930/146930 co-relation queries the response was YES. [2024-06-27 20:44:37,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11134 conditions, 1547 events. 847/1547 cut-off events. For 146930/146930 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8987 event pairs, 215 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 10960. Up to 1481 conditions per place. [2024-06-27 20:44:37,718 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 284 selfloop transitions, 32 changer transitions 0/318 dead transitions. [2024-06-27 20:44:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 318 transitions, 4500 flow [2024-06-27 20:44:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:44:37,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 20:44:37,720 INFO L175 Difference]: Start difference. First operand has 379 places, 304 transitions, 3808 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:44:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 318 transitions, 4500 flow [2024-06-27 20:44:38,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 318 transitions, 4312 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:38,252 INFO L231 Difference]: Finished difference. Result has 380 places, 305 transitions, 3722 flow [2024-06-27 20:44:38,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3722, PETRI_PLACES=380, PETRI_TRANSITIONS=305} [2024-06-27 20:44:38,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-27 20:44:38,252 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 305 transitions, 3722 flow [2024-06-27 20:44:38,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:38,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:38,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:38,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 20:44:38,253 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:38,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1698035717, now seen corresponding path program 26 times [2024-06-27 20:44:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755860301] [2024-06-27 20:44:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755860301] [2024-06-27 20:44:39,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755860301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816011049] [2024-06-27 20:44:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:39,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:39,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:39,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:39,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:39,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:39,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 305 transitions, 3722 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:39,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:39,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:39,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:39,741 INFO L124 PetriNetUnfolderBase]: 851/1555 cut-off events. [2024-06-27 20:44:39,741 INFO L125 PetriNetUnfolderBase]: For 146929/146929 co-relation queries the response was YES. [2024-06-27 20:44:39,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 1555 events. 851/1555 cut-off events. For 146929/146929 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9017 event pairs, 119 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 10873. Up to 1200 conditions per place. [2024-06-27 20:44:39,762 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 206 selfloop transitions, 112 changer transitions 0/320 dead transitions. [2024-06-27 20:44:39,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 320 transitions, 4434 flow [2024-06-27 20:44:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:44:39,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:44:39,763 INFO L175 Difference]: Start difference. First operand has 380 places, 305 transitions, 3722 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:44:39,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 320 transitions, 4434 flow [2024-06-27 20:44:40,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 320 transitions, 4344 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:40,308 INFO L231 Difference]: Finished difference. Result has 381 places, 306 transitions, 3892 flow [2024-06-27 20:44:40,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3892, PETRI_PLACES=381, PETRI_TRANSITIONS=306} [2024-06-27 20:44:40,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-27 20:44:40,308 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 306 transitions, 3892 flow [2024-06-27 20:44:40,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:40,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:40,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 20:44:40,309 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:40,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1616874245, now seen corresponding path program 3 times [2024-06-27 20:44:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799479908] [2024-06-27 20:44:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799479908] [2024-06-27 20:44:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799479908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:41,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:41,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:41,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870652077] [2024-06-27 20:44:41,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:41,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:41,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:41,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 306 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:41,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:41,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:41,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:41,708 INFO L124 PetriNetUnfolderBase]: 847/1550 cut-off events. [2024-06-27 20:44:41,708 INFO L125 PetriNetUnfolderBase]: For 136169/136169 co-relation queries the response was YES. [2024-06-27 20:44:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10975 conditions, 1550 events. 847/1550 cut-off events. For 136169/136169 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9017 event pairs, 118 based on Foata normal form. 2/1552 useless extension candidates. Maximal degree in co-relation 10800. Up to 999 conditions per place. [2024-06-27 20:44:41,727 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 140 changer transitions 0/324 dead transitions. [2024-06-27 20:44:41,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 324 transitions, 4610 flow [2024-06-27 20:44:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:44:41,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:44:41,728 INFO L175 Difference]: Start difference. First operand has 381 places, 306 transitions, 3892 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:44:41,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 324 transitions, 4610 flow [2024-06-27 20:44:42,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 324 transitions, 4330 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:42,329 INFO L231 Difference]: Finished difference. Result has 385 places, 309 transitions, 4008 flow [2024-06-27 20:44:42,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3612, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4008, PETRI_PLACES=385, PETRI_TRANSITIONS=309} [2024-06-27 20:44:42,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-27 20:44:42,330 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 309 transitions, 4008 flow [2024-06-27 20:44:42,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:42,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:42,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 20:44:42,330 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:42,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 3 times [2024-06-27 20:44:42,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:42,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560458277] [2024-06-27 20:44:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:43,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:43,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560458277] [2024-06-27 20:44:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560458277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:43,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:43,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:43,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386776] [2024-06-27 20:44:43,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:43,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:43,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:43,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 309 transitions, 4008 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:43,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:43,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:43,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:43,955 INFO L124 PetriNetUnfolderBase]: 867/1594 cut-off events. [2024-06-27 20:44:43,955 INFO L125 PetriNetUnfolderBase]: For 192738/192738 co-relation queries the response was YES. [2024-06-27 20:44:43,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11364 conditions, 1594 events. 867/1594 cut-off events. For 192738/192738 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9289 event pairs, 122 based on Foata normal form. 12/1606 useless extension candidates. Maximal degree in co-relation 11186. Up to 995 conditions per place. [2024-06-27 20:44:43,974 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 183 selfloop transitions, 137 changer transitions 9/331 dead transitions. [2024-06-27 20:44:43,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 331 transitions, 4804 flow [2024-06-27 20:44:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:44:43,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:44:43,975 INFO L175 Difference]: Start difference. First operand has 385 places, 309 transitions, 4008 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:44:43,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 331 transitions, 4804 flow [2024-06-27 20:44:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 331 transitions, 4584 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:44,592 INFO L231 Difference]: Finished difference. Result has 388 places, 306 transitions, 4053 flow [2024-06-27 20:44:44,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3788, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4053, PETRI_PLACES=388, PETRI_TRANSITIONS=306} [2024-06-27 20:44:44,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-27 20:44:44,592 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 306 transitions, 4053 flow [2024-06-27 20:44:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:44,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:44,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:44,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 20:44:44,593 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939587, now seen corresponding path program 4 times [2024-06-27 20:44:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817541078] [2024-06-27 20:44:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817541078] [2024-06-27 20:44:45,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817541078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:45,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:45,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947502693] [2024-06-27 20:44:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:45,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:45,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:45,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 306 transitions, 4053 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:45,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:45,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:45,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:46,269 INFO L124 PetriNetUnfolderBase]: 853/1578 cut-off events. [2024-06-27 20:44:46,269 INFO L125 PetriNetUnfolderBase]: For 192251/192251 co-relation queries the response was YES. [2024-06-27 20:44:46,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11118 conditions, 1578 events. 853/1578 cut-off events. For 192251/192251 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9216 event pairs, 164 based on Foata normal form. 14/1592 useless extension candidates. Maximal degree in co-relation 10939. Up to 971 conditions per place. [2024-06-27 20:44:46,284 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 111 changer transitions 11/328 dead transitions. [2024-06-27 20:44:46,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 328 transitions, 4845 flow [2024-06-27 20:44:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:44:46,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:44:46,285 INFO L175 Difference]: Start difference. First operand has 388 places, 306 transitions, 4053 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:44:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 328 transitions, 4845 flow [2024-06-27 20:44:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 328 transitions, 4509 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:46,830 INFO L231 Difference]: Finished difference. Result has 389 places, 301 transitions, 3923 flow [2024-06-27 20:44:46,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3923, PETRI_PLACES=389, PETRI_TRANSITIONS=301} [2024-06-27 20:44:46,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-27 20:44:46,831 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 301 transitions, 3923 flow [2024-06-27 20:44:46,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:46,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:46,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:46,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 20:44:46,831 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:46,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:46,831 INFO L85 PathProgramCache]: Analyzing trace with hash 18903437, now seen corresponding path program 5 times [2024-06-27 20:44:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:46,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496870978] [2024-06-27 20:44:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:48,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:48,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496870978] [2024-06-27 20:44:48,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496870978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:48,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:48,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:48,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499412214] [2024-06-27 20:44:48,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:48,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:48,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:48,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:48,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:48,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 301 transitions, 3923 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:48,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:48,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:48,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:48,838 INFO L124 PetriNetUnfolderBase]: 819/1523 cut-off events. [2024-06-27 20:44:48,838 INFO L125 PetriNetUnfolderBase]: For 133082/133082 co-relation queries the response was YES. [2024-06-27 20:44:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10768 conditions, 1523 events. 819/1523 cut-off events. For 133082/133082 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9034 event pairs, 302 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 10588. Up to 1486 conditions per place. [2024-06-27 20:44:48,858 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 293 selfloop transitions, 18 changer transitions 0/313 dead transitions. [2024-06-27 20:44:48,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 313 transitions, 4603 flow [2024-06-27 20:44:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 20:44:48,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 20:44:48,859 INFO L175 Difference]: Start difference. First operand has 389 places, 301 transitions, 3923 flow. Second operand 11 states and 103 transitions. [2024-06-27 20:44:48,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 313 transitions, 4603 flow [2024-06-27 20:44:49,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 313 transitions, 4317 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-27 20:44:49,430 INFO L231 Difference]: Finished difference. Result has 388 places, 302 transitions, 3713 flow [2024-06-27 20:44:49,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3713, PETRI_PLACES=388, PETRI_TRANSITIONS=302} [2024-06-27 20:44:49,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-27 20:44:49,430 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 302 transitions, 3713 flow [2024-06-27 20:44:49,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:49,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:49,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:49,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 20:44:49,431 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:49,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash 18894757, now seen corresponding path program 4 times [2024-06-27 20:44:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:49,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559787878] [2024-06-27 20:44:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:49,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559787878] [2024-06-27 20:44:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559787878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:50,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238512625] [2024-06-27 20:44:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:50,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:50,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 302 transitions, 3713 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:50,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:50,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:50,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:50,902 INFO L124 PetriNetUnfolderBase]: 815/1517 cut-off events. [2024-06-27 20:44:50,902 INFO L125 PetriNetUnfolderBase]: For 120138/120138 co-relation queries the response was YES. [2024-06-27 20:44:50,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 1517 events. 815/1517 cut-off events. For 120138/120138 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8997 event pairs, 299 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 10024. Up to 1472 conditions per place. [2024-06-27 20:44:50,920 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 20 changer transitions 0/313 dead transitions. [2024-06-27 20:44:50,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 313 transitions, 4367 flow [2024-06-27 20:44:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:44:50,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-27 20:44:50,921 INFO L175 Difference]: Start difference. First operand has 388 places, 302 transitions, 3713 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:44:50,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 313 transitions, 4367 flow [2024-06-27 20:44:51,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 313 transitions, 4271 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:51,435 INFO L231 Difference]: Finished difference. Result has 389 places, 302 transitions, 3665 flow [2024-06-27 20:44:51,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3665, PETRI_PLACES=389, PETRI_TRANSITIONS=302} [2024-06-27 20:44:51,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-27 20:44:51,436 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 302 transitions, 3665 flow [2024-06-27 20:44:51,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:51,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:51,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 20:44:51,436 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:51,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1993857371, now seen corresponding path program 6 times [2024-06-27 20:44:51,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:51,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42237825] [2024-06-27 20:44:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42237825] [2024-06-27 20:44:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42237825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:52,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:52,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654296818] [2024-06-27 20:44:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:52,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:52,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:52,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 302 transitions, 3665 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:52,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:52,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:52,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:53,265 INFO L124 PetriNetUnfolderBase]: 826/1538 cut-off events. [2024-06-27 20:44:53,265 INFO L125 PetriNetUnfolderBase]: For 134774/134774 co-relation queries the response was YES. [2024-06-27 20:44:53,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10573 conditions, 1538 events. 826/1538 cut-off events. For 134774/134774 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9152 event pairs, 300 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 10392. Up to 1472 conditions per place. [2024-06-27 20:44:53,285 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 24 changer transitions 0/318 dead transitions. [2024-06-27 20:44:53,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 318 transitions, 4617 flow [2024-06-27 20:44:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:44:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:44:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:44:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:44:53,286 INFO L175 Difference]: Start difference. First operand has 389 places, 302 transitions, 3665 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:44:53,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 318 transitions, 4617 flow [2024-06-27 20:44:53,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 318 transitions, 4560 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:53,808 INFO L231 Difference]: Finished difference. Result has 391 places, 304 transitions, 3736 flow [2024-06-27 20:44:53,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3736, PETRI_PLACES=391, PETRI_TRANSITIONS=304} [2024-06-27 20:44:53,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-27 20:44:53,808 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 304 transitions, 3736 flow [2024-06-27 20:44:53,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:53,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:53,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:53,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 20:44:53,809 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:53,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1993501181, now seen corresponding path program 7 times [2024-06-27 20:44:53,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:53,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651634602] [2024-06-27 20:44:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:53,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651634602] [2024-06-27 20:44:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651634602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515247972] [2024-06-27 20:44:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:54,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:54,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:54,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:54,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 304 transitions, 3736 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:54,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:54,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:54,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:55,445 INFO L124 PetriNetUnfolderBase]: 823/1533 cut-off events. [2024-06-27 20:44:55,445 INFO L125 PetriNetUnfolderBase]: For 122991/122991 co-relation queries the response was YES. [2024-06-27 20:44:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 1533 events. 823/1533 cut-off events. For 122991/122991 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9155 event pairs, 299 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 10142. Up to 1476 conditions per place. [2024-06-27 20:44:55,464 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 25 changer transitions 0/318 dead transitions. [2024-06-27 20:44:55,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 318 transitions, 4406 flow [2024-06-27 20:44:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:44:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:44:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-27 20:44:55,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:44:55,465 INFO L175 Difference]: Start difference. First operand has 391 places, 304 transitions, 3736 flow. Second operand 12 states and 116 transitions. [2024-06-27 20:44:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 318 transitions, 4406 flow [2024-06-27 20:44:56,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 318 transitions, 4312 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:56,015 INFO L231 Difference]: Finished difference. Result has 395 places, 304 transitions, 3696 flow [2024-06-27 20:44:56,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3696, PETRI_PLACES=395, PETRI_TRANSITIONS=304} [2024-06-27 20:44:56,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-27 20:44:56,016 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 304 transitions, 3696 flow [2024-06-27 20:44:56,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:56,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:56,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:56,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 20:44:56,017 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:56,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:56,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1958512797, now seen corresponding path program 27 times [2024-06-27 20:44:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452141723] [2024-06-27 20:44:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452141723] [2024-06-27 20:44:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452141723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:56,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:56,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:56,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874701870] [2024-06-27 20:44:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:56,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:57,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:57,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 304 transitions, 3696 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:57,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:57,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:57,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:57,535 INFO L124 PetriNetUnfolderBase]: 827/1542 cut-off events. [2024-06-27 20:44:57,535 INFO L125 PetriNetUnfolderBase]: For 124431/124431 co-relation queries the response was YES. [2024-06-27 20:44:57,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 1542 events. 827/1542 cut-off events. For 124431/124431 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9204 event pairs, 123 based on Foata normal form. 2/1544 useless extension candidates. Maximal degree in co-relation 10148. Up to 1186 conditions per place. [2024-06-27 20:44:57,550 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 221 selfloop transitions, 97 changer transitions 0/320 dead transitions. [2024-06-27 20:44:57,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 320 transitions, 4416 flow [2024-06-27 20:44:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:44:57,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:44:57,551 INFO L175 Difference]: Start difference. First operand has 395 places, 304 transitions, 3696 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:44:57,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 320 transitions, 4416 flow [2024-06-27 20:44:58,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 320 transitions, 4360 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:58,075 INFO L231 Difference]: Finished difference. Result has 394 places, 305 transitions, 3872 flow [2024-06-27 20:44:58,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3872, PETRI_PLACES=394, PETRI_TRANSITIONS=305} [2024-06-27 20:44:58,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-27 20:44:58,075 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 305 transitions, 3872 flow [2024-06-27 20:44:58,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:58,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:58,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:44:58,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 20:44:58,076 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:44:58,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2016013997, now seen corresponding path program 28 times [2024-06-27 20:44:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:58,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958382417] [2024-06-27 20:44:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:59,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958382417] [2024-06-27 20:44:59,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958382417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:59,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255295280] [2024-06-27 20:44:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:59,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:59,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:59,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 305 transitions, 3872 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:59,611 INFO L124 PetriNetUnfolderBase]: 831/1550 cut-off events. [2024-06-27 20:44:59,612 INFO L125 PetriNetUnfolderBase]: For 127845/127845 co-relation queries the response was YES. [2024-06-27 20:44:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10621 conditions, 1550 events. 831/1550 cut-off events. For 127845/127845 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9267 event pairs, 140 based on Foata normal form. 2/1552 useless extension candidates. Maximal degree in co-relation 10436. Up to 1194 conditions per place. [2024-06-27 20:44:59,633 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 87 changer transitions 0/321 dead transitions. [2024-06-27 20:44:59,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 321 transitions, 4596 flow [2024-06-27 20:44:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:44:59,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:44:59,634 INFO L175 Difference]: Start difference. First operand has 394 places, 305 transitions, 3872 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:44:59,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 321 transitions, 4596 flow [2024-06-27 20:45:00,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 321 transitions, 4374 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:00,104 INFO L231 Difference]: Finished difference. Result has 396 places, 306 transitions, 3864 flow [2024-06-27 20:45:00,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3864, PETRI_PLACES=396, PETRI_TRANSITIONS=306} [2024-06-27 20:45:00,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-27 20:45:00,104 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 306 transitions, 3864 flow [2024-06-27 20:45:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:00,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:00,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:00,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 20:45:00,105 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:00,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2039904909, now seen corresponding path program 5 times [2024-06-27 20:45:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:00,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788831705] [2024-06-27 20:45:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:00,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:01,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:01,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788831705] [2024-06-27 20:45:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788831705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:01,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:45:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734246435] [2024-06-27 20:45:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:01,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:45:01,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:45:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:45:01,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:01,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 306 transitions, 3864 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:01,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:01,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:01,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:01,517 INFO L124 PetriNetUnfolderBase]: 827/1544 cut-off events. [2024-06-27 20:45:01,517 INFO L125 PetriNetUnfolderBase]: For 117095/117095 co-relation queries the response was YES. [2024-06-27 20:45:01,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10299 conditions, 1544 events. 827/1544 cut-off events. For 117095/117095 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9224 event pairs, 132 based on Foata normal form. 2/1546 useless extension candidates. Maximal degree in co-relation 10113. Up to 989 conditions per place. [2024-06-27 20:45:01,537 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 120 changer transitions 0/321 dead transitions. [2024-06-27 20:45:01,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 4558 flow [2024-06-27 20:45:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 20:45:01,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 20:45:01,538 INFO L175 Difference]: Start difference. First operand has 396 places, 306 transitions, 3864 flow. Second operand 10 states and 116 transitions. [2024-06-27 20:45:01,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 4558 flow [2024-06-27 20:45:02,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 321 transitions, 4324 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:02,009 INFO L231 Difference]: Finished difference. Result has 398 places, 306 transitions, 3880 flow [2024-06-27 20:45:02,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3880, PETRI_PLACES=398, PETRI_TRANSITIONS=306} [2024-06-27 20:45:02,010 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-27 20:45:02,010 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 306 transitions, 3880 flow [2024-06-27 20:45:02,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:02,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:02,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:02,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 20:45:02,011 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:02,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584907, now seen corresponding path program 29 times [2024-06-27 20:45:02,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:02,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860405404] [2024-06-27 20:45:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:02,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:03,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:03,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860405404] [2024-06-27 20:45:03,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860405404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:03,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:03,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397553353] [2024-06-27 20:45:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:03,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:03,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 306 transitions, 3880 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:03,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:03,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:03,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:03,510 INFO L124 PetriNetUnfolderBase]: 831/1552 cut-off events. [2024-06-27 20:45:03,510 INFO L125 PetriNetUnfolderBase]: For 119054/119054 co-relation queries the response was YES. [2024-06-27 20:45:03,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10382 conditions, 1552 events. 831/1552 cut-off events. For 119054/119054 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9273 event pairs, 140 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 10195. Up to 1196 conditions per place. [2024-06-27 20:45:03,530 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 88 changer transitions 0/322 dead transitions. [2024-06-27 20:45:03,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 322 transitions, 4608 flow [2024-06-27 20:45:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:45:03,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:45:03,531 INFO L175 Difference]: Start difference. First operand has 398 places, 306 transitions, 3880 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:45:03,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 322 transitions, 4608 flow [2024-06-27 20:45:04,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 322 transitions, 4239 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:45:04,054 INFO L231 Difference]: Finished difference. Result has 396 places, 307 transitions, 3729 flow [2024-06-27 20:45:04,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=396, PETRI_TRANSITIONS=307} [2024-06-27 20:45:04,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-27 20:45:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 307 transitions, 3729 flow [2024-06-27 20:45:04,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:04,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:04,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 20:45:04,055 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:04,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2039665589, now seen corresponding path program 8 times [2024-06-27 20:45:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140702671] [2024-06-27 20:45:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:05,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:05,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140702671] [2024-06-27 20:45:05,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140702671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:05,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905551796] [2024-06-27 20:45:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:05,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:05,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:05,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 307 transitions, 3729 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:05,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:05,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:05,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:05,632 INFO L124 PetriNetUnfolderBase]: 844/1583 cut-off events. [2024-06-27 20:45:05,632 INFO L125 PetriNetUnfolderBase]: For 167511/167511 co-relation queries the response was YES. [2024-06-27 20:45:05,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10117 conditions, 1583 events. 844/1583 cut-off events. For 167511/167511 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9450 event pairs, 137 based on Foata normal form. 12/1595 useless extension candidates. Maximal degree in co-relation 9929. Up to 980 conditions per place. [2024-06-27 20:45:05,653 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 200 selfloop transitions, 116 changer transitions 10/328 dead transitions. [2024-06-27 20:45:05,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 328 transitions, 4489 flow [2024-06-27 20:45:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:45:05,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:45:05,654 INFO L175 Difference]: Start difference. First operand has 396 places, 307 transitions, 3729 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:45:05,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 328 transitions, 4489 flow [2024-06-27 20:45:06,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 328 transitions, 4281 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:06,190 INFO L231 Difference]: Finished difference. Result has 399 places, 302 transitions, 3713 flow [2024-06-27 20:45:06,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3713, PETRI_PLACES=399, PETRI_TRANSITIONS=302} [2024-06-27 20:45:06,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-27 20:45:06,191 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 302 transitions, 3713 flow [2024-06-27 20:45:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:06,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:06,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 20:45:06,191 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:06,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2016018647, now seen corresponding path program 30 times [2024-06-27 20:45:06,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:06,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320496991] [2024-06-27 20:45:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:06,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:07,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:07,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320496991] [2024-06-27 20:45:07,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320496991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:07,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:07,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:07,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774848657] [2024-06-27 20:45:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:07,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:07,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:07,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:07,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 302 transitions, 3713 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:07,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:07,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:07,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:07,632 INFO L124 PetriNetUnfolderBase]: 814/1533 cut-off events. [2024-06-27 20:45:07,632 INFO L125 PetriNetUnfolderBase]: For 107583/107583 co-relation queries the response was YES. [2024-06-27 20:45:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9938 conditions, 1533 events. 814/1533 cut-off events. For 107583/107583 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9259 event pairs, 141 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 9749. Up to 1157 conditions per place. [2024-06-27 20:45:07,651 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 227 selfloop transitions, 89 changer transitions 0/318 dead transitions. [2024-06-27 20:45:07,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 4431 flow [2024-06-27 20:45:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:45:07,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:45:07,652 INFO L175 Difference]: Start difference. First operand has 399 places, 302 transitions, 3713 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:45:07,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 4431 flow [2024-06-27 20:45:08,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 318 transitions, 4018 flow, removed 18 selfloop flow, removed 16 redundant places. [2024-06-27 20:45:08,116 INFO L231 Difference]: Finished difference. Result has 393 places, 303 transitions, 3522 flow [2024-06-27 20:45:08,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3522, PETRI_PLACES=393, PETRI_TRANSITIONS=303} [2024-06-27 20:45:08,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-27 20:45:08,117 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 303 transitions, 3522 flow [2024-06-27 20:45:08,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:08,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:08,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:08,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 20:45:08,118 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:08,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2046340943, now seen corresponding path program 31 times [2024-06-27 20:45:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:08,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172026273] [2024-06-27 20:45:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:08,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172026273] [2024-06-27 20:45:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172026273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:09,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:09,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266651248] [2024-06-27 20:45:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:09,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:09,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:09,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 303 transitions, 3522 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:09,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:09,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:09,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:09,748 INFO L124 PetriNetUnfolderBase]: 818/1541 cut-off events. [2024-06-27 20:45:09,748 INFO L125 PetriNetUnfolderBase]: For 109282/109282 co-relation queries the response was YES. [2024-06-27 20:45:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9746 conditions, 1541 events. 818/1541 cut-off events. For 109282/109282 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9316 event pairs, 121 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 9561. Up to 1185 conditions per place. [2024-06-27 20:45:09,767 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 218 selfloop transitions, 98 changer transitions 0/318 dead transitions. [2024-06-27 20:45:09,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 318 transitions, 4240 flow [2024-06-27 20:45:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:45:09,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:45:09,768 INFO L175 Difference]: Start difference. First operand has 393 places, 303 transitions, 3522 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:45:09,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 318 transitions, 4240 flow [2024-06-27 20:45:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 318 transitions, 4002 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 20:45:10,213 INFO L231 Difference]: Finished difference. Result has 394 places, 304 transitions, 3526 flow [2024-06-27 20:45:10,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3526, PETRI_PLACES=394, PETRI_TRANSITIONS=304} [2024-06-27 20:45:10,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-27 20:45:10,214 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 304 transitions, 3526 flow [2024-06-27 20:45:10,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:10,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:10,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:10,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 20:45:10,214 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:10,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2105317371, now seen corresponding path program 32 times [2024-06-27 20:45:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137344235] [2024-06-27 20:45:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:10,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137344235] [2024-06-27 20:45:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137344235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:11,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205331047] [2024-06-27 20:45:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:11,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:11,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 304 transitions, 3526 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:11,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:11,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:11,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:11,892 INFO L124 PetriNetUnfolderBase]: 822/1549 cut-off events. [2024-06-27 20:45:11,892 INFO L125 PetriNetUnfolderBase]: For 111004/111004 co-relation queries the response was YES. [2024-06-27 20:45:11,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9764 conditions, 1549 events. 822/1549 cut-off events. For 111004/111004 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9387 event pairs, 145 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 9579. Up to 1193 conditions per place. [2024-06-27 20:45:11,910 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 227 selfloop transitions, 90 changer transitions 0/319 dead transitions. [2024-06-27 20:45:11,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 319 transitions, 4246 flow [2024-06-27 20:45:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:45:11,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:45:11,911 INFO L175 Difference]: Start difference. First operand has 394 places, 304 transitions, 3526 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:45:11,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 319 transitions, 4246 flow [2024-06-27 20:45:12,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 319 transitions, 4016 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:12,422 INFO L231 Difference]: Finished difference. Result has 396 places, 305 transitions, 3522 flow [2024-06-27 20:45:12,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3522, PETRI_PLACES=396, PETRI_TRANSITIONS=305} [2024-06-27 20:45:12,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-27 20:45:12,423 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 305 transitions, 3522 flow [2024-06-27 20:45:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:12,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:12,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:12,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 20:45:12,424 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:12,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2105322021, now seen corresponding path program 33 times [2024-06-27 20:45:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:12,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93000051] [2024-06-27 20:45:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:13,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93000051] [2024-06-27 20:45:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93000051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711366677] [2024-06-27 20:45:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:13,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:13,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:13,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:13,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 305 transitions, 3522 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:13,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:13,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:13,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:14,106 INFO L124 PetriNetUnfolderBase]: 826/1557 cut-off events. [2024-06-27 20:45:14,106 INFO L125 PetriNetUnfolderBase]: For 112912/112912 co-relation queries the response was YES. [2024-06-27 20:45:14,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9789 conditions, 1557 events. 826/1557 cut-off events. For 112912/112912 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9459 event pairs, 145 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 9603. Up to 1187 conditions per place. [2024-06-27 20:45:14,127 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 227 selfloop transitions, 91 changer transitions 0/320 dead transitions. [2024-06-27 20:45:14,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 320 transitions, 4242 flow [2024-06-27 20:45:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:45:14,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:45:14,128 INFO L175 Difference]: Start difference. First operand has 396 places, 305 transitions, 3522 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:45:14,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 320 transitions, 4242 flow [2024-06-27 20:45:14,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 320 transitions, 4026 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:14,571 INFO L231 Difference]: Finished difference. Result has 398 places, 306 transitions, 3536 flow [2024-06-27 20:45:14,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3536, PETRI_PLACES=398, PETRI_TRANSITIONS=306} [2024-06-27 20:45:14,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-27 20:45:14,571 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 306 transitions, 3536 flow [2024-06-27 20:45:14,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:14,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:14,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:14,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 20:45:14,572 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:14,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1964946537, now seen corresponding path program 34 times [2024-06-27 20:45:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:14,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979376406] [2024-06-27 20:45:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:14,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:15,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979376406] [2024-06-27 20:45:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979376406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:15,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:15,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496979988] [2024-06-27 20:45:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:15,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:15,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:15,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:15,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 306 transitions, 3536 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:15,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:15,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:15,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:16,057 INFO L124 PetriNetUnfolderBase]: 830/1565 cut-off events. [2024-06-27 20:45:16,057 INFO L125 PetriNetUnfolderBase]: For 114942/114942 co-relation queries the response was YES. [2024-06-27 20:45:16,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9844 conditions, 1565 events. 830/1565 cut-off events. For 114942/114942 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9471 event pairs, 127 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 9657. Up to 1183 conditions per place. [2024-06-27 20:45:16,077 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 218 selfloop transitions, 101 changer transitions 0/321 dead transitions. [2024-06-27 20:45:16,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 321 transitions, 4260 flow [2024-06-27 20:45:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:45:16,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:45:16,078 INFO L175 Difference]: Start difference. First operand has 398 places, 306 transitions, 3536 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:45:16,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 321 transitions, 4260 flow [2024-06-27 20:45:16,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 321 transitions, 4040 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:16,570 INFO L231 Difference]: Finished difference. Result has 400 places, 307 transitions, 3568 flow [2024-06-27 20:45:16,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3568, PETRI_PLACES=400, PETRI_TRANSITIONS=307} [2024-06-27 20:45:16,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-27 20:45:16,571 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 307 transitions, 3568 flow [2024-06-27 20:45:16,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:16,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:16,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:16,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 20:45:16,571 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:16,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2105437341, now seen corresponding path program 35 times [2024-06-27 20:45:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164195603] [2024-06-27 20:45:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:16,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:17,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:17,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164195603] [2024-06-27 20:45:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164195603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:17,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:17,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:17,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027033013] [2024-06-27 20:45:17,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:17,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:17,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:17,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:17,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:17,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:17,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 307 transitions, 3568 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:17,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:17,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:17,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:18,024 INFO L124 PetriNetUnfolderBase]: 827/1560 cut-off events. [2024-06-27 20:45:18,024 INFO L125 PetriNetUnfolderBase]: For 102092/102092 co-relation queries the response was YES. [2024-06-27 20:45:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1560 events. 827/1560 cut-off events. For 102092/102092 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9480 event pairs, 148 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 9347. Up to 1110 conditions per place. [2024-06-27 20:45:18,045 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 99 changer transitions 0/321 dead transitions. [2024-06-27 20:45:18,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 321 transitions, 4244 flow [2024-06-27 20:45:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:45:18,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:45:18,047 INFO L175 Difference]: Start difference. First operand has 400 places, 307 transitions, 3568 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:45:18,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 321 transitions, 4244 flow [2024-06-27 20:45:18,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 321 transitions, 4002 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:18,556 INFO L231 Difference]: Finished difference. Result has 402 places, 307 transitions, 3528 flow [2024-06-27 20:45:18,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3528, PETRI_PLACES=402, PETRI_TRANSITIONS=307} [2024-06-27 20:45:18,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-27 20:45:18,557 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 307 transitions, 3528 flow [2024-06-27 20:45:18,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:18,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:18,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:18,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 20:45:18,558 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:18,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:18,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1408071917, now seen corresponding path program 1 times [2024-06-27 20:45:18,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:18,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228365961] [2024-06-27 20:45:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:19,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:19,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228365961] [2024-06-27 20:45:19,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228365961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:19,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:19,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721354793] [2024-06-27 20:45:19,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:19,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:19,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:19,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 307 transitions, 3528 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:19,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:19,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:19,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:19,967 INFO L124 PetriNetUnfolderBase]: 831/1567 cut-off events. [2024-06-27 20:45:19,967 INFO L125 PetriNetUnfolderBase]: For 103439/103439 co-relation queries the response was YES. [2024-06-27 20:45:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9553 conditions, 1567 events. 831/1567 cut-off events. For 103439/103439 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9546 event pairs, 195 based on Foata normal form. 2/1569 useless extension candidates. Maximal degree in co-relation 9364. Up to 1466 conditions per place. [2024-06-27 20:45:19,987 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 26 changer transitions 0/330 dead transitions. [2024-06-27 20:45:19,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 330 transitions, 4274 flow [2024-06-27 20:45:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 20:45:19,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 20:45:19,989 INFO L175 Difference]: Start difference. First operand has 402 places, 307 transitions, 3528 flow. Second operand 12 states and 121 transitions. [2024-06-27 20:45:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 330 transitions, 4274 flow [2024-06-27 20:45:20,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 330 transitions, 3866 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:20,409 INFO L231 Difference]: Finished difference. Result has 403 places, 308 transitions, 3214 flow [2024-06-27 20:45:20,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3120, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3214, PETRI_PLACES=403, PETRI_TRANSITIONS=308} [2024-06-27 20:45:20,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-27 20:45:20,409 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 308 transitions, 3214 flow [2024-06-27 20:45:20,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:20,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:20,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:20,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 20:45:20,410 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:20,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:20,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1643369731, now seen corresponding path program 2 times [2024-06-27 20:45:20,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:20,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319822473] [2024-06-27 20:45:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319822473] [2024-06-27 20:45:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319822473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:21,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942785325] [2024-06-27 20:45:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:21,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:21,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:21,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 308 transitions, 3214 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:21,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:21,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:21,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:21,858 INFO L124 PetriNetUnfolderBase]: 835/1575 cut-off events. [2024-06-27 20:45:21,858 INFO L125 PetriNetUnfolderBase]: For 106782/106782 co-relation queries the response was YES. [2024-06-27 20:45:21,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9039 conditions, 1575 events. 835/1575 cut-off events. For 106782/106782 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9605 event pairs, 161 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 8851. Up to 1439 conditions per place. [2024-06-27 20:45:21,878 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 28 changer transitions 0/331 dead transitions. [2024-06-27 20:45:21,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 331 transitions, 3962 flow [2024-06-27 20:45:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 20:45:21,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 20:45:21,879 INFO L175 Difference]: Start difference. First operand has 403 places, 308 transitions, 3214 flow. Second operand 12 states and 118 transitions. [2024-06-27 20:45:21,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 331 transitions, 3962 flow [2024-06-27 20:45:22,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 331 transitions, 3800 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:22,460 INFO L231 Difference]: Finished difference. Result has 404 places, 309 transitions, 3152 flow [2024-06-27 20:45:22,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3052, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3152, PETRI_PLACES=404, PETRI_TRANSITIONS=309} [2024-06-27 20:45:22,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 20:45:22,460 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 309 transitions, 3152 flow [2024-06-27 20:45:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:22,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:22,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 20:45:22,461 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:22,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 3 times [2024-06-27 20:45:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675444078] [2024-06-27 20:45:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:23,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:23,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675444078] [2024-06-27 20:45:23,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675444078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:23,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:23,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931944812] [2024-06-27 20:45:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:23,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:23,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:23,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 309 transitions, 3152 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:23,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:23,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:23,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:23,926 INFO L124 PetriNetUnfolderBase]: 846/1596 cut-off events. [2024-06-27 20:45:23,926 INFO L125 PetriNetUnfolderBase]: For 113544/113544 co-relation queries the response was YES. [2024-06-27 20:45:23,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1596 events. 846/1596 cut-off events. For 113544/113544 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9769 event pairs, 187 based on Foata normal form. 2/1598 useless extension candidates. Maximal degree in co-relation 9066. Up to 1420 conditions per place. [2024-06-27 20:45:23,948 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 34 changer transitions 0/333 dead transitions. [2024-06-27 20:45:23,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 333 transitions, 4186 flow [2024-06-27 20:45:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 20:45:23,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 20:45:23,949 INFO L175 Difference]: Start difference. First operand has 404 places, 309 transitions, 3152 flow. Second operand 12 states and 127 transitions. [2024-06-27 20:45:23,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 333 transitions, 4186 flow [2024-06-27 20:45:24,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 333 transitions, 4087 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-27 20:45:24,607 INFO L231 Difference]: Finished difference. Result has 404 places, 311 transitions, 3207 flow [2024-06-27 20:45:24,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3207, PETRI_PLACES=404, PETRI_TRANSITIONS=311} [2024-06-27 20:45:24,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 20:45:24,608 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 311 transitions, 3207 flow [2024-06-27 20:45:24,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:24,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:24,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:24,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 20:45:24,608 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:24,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash -283918723, now seen corresponding path program 4 times [2024-06-27 20:45:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:24,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676163638] [2024-06-27 20:45:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676163638] [2024-06-27 20:45:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676163638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:25,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86896710] [2024-06-27 20:45:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:25,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:25,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:25,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 311 transitions, 3207 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:25,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:25,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:25,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:26,142 INFO L124 PetriNetUnfolderBase]: 850/1604 cut-off events. [2024-06-27 20:45:26,143 INFO L125 PetriNetUnfolderBase]: For 118570/118570 co-relation queries the response was YES. [2024-06-27 20:45:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9295 conditions, 1604 events. 850/1604 cut-off events. For 118570/118570 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9839 event pairs, 202 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 9108. Up to 1495 conditions per place. [2024-06-27 20:45:26,173 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 36 changer transitions 0/333 dead transitions. [2024-06-27 20:45:26,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 333 transitions, 3977 flow [2024-06-27 20:45:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 20:45:26,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 20:45:26,175 INFO L175 Difference]: Start difference. First operand has 404 places, 311 transitions, 3207 flow. Second operand 12 states and 123 transitions. [2024-06-27 20:45:26,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 333 transitions, 3977 flow [2024-06-27 20:45:26,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 333 transitions, 3876 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:26,779 INFO L231 Difference]: Finished difference. Result has 408 places, 312 transitions, 3227 flow [2024-06-27 20:45:26,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3227, PETRI_PLACES=408, PETRI_TRANSITIONS=312} [2024-06-27 20:45:26,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-27 20:45:26,779 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 312 transitions, 3227 flow [2024-06-27 20:45:26,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:26,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:26,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:26,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 20:45:26,780 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:26,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash -856927815, now seen corresponding path program 5 times [2024-06-27 20:45:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:26,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591451775] [2024-06-27 20:45:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591451775] [2024-06-27 20:45:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591451775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:27,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:27,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:27,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701287288] [2024-06-27 20:45:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:27,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:27,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:27,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:27,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:27,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 312 transitions, 3227 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:27,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:27,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:27,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:28,344 INFO L124 PetriNetUnfolderBase]: 854/1612 cut-off events. [2024-06-27 20:45:28,344 INFO L125 PetriNetUnfolderBase]: For 119680/119680 co-relation queries the response was YES. [2024-06-27 20:45:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9330 conditions, 1612 events. 854/1612 cut-off events. For 119680/119680 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9879 event pairs, 201 based on Foata normal form. 2/1614 useless extension candidates. Maximal degree in co-relation 9141. Up to 1487 conditions per place. [2024-06-27 20:45:28,365 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 296 selfloop transitions, 36 changer transitions 0/334 dead transitions. [2024-06-27 20:45:28,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 334 transitions, 3987 flow [2024-06-27 20:45:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 20:45:28,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:45:28,366 INFO L175 Difference]: Start difference. First operand has 408 places, 312 transitions, 3227 flow. Second operand 12 states and 124 transitions. [2024-06-27 20:45:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 334 transitions, 3987 flow [2024-06-27 20:45:28,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 334 transitions, 3890 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:28,962 INFO L231 Difference]: Finished difference. Result has 410 places, 313 transitions, 3242 flow [2024-06-27 20:45:28,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3242, PETRI_PLACES=410, PETRI_TRANSITIONS=313} [2024-06-27 20:45:28,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-27 20:45:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 313 transitions, 3242 flow [2024-06-27 20:45:28,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:28,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:28,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 20:45:28,963 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:28,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -861713595, now seen corresponding path program 6 times [2024-06-27 20:45:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:28,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928487703] [2024-06-27 20:45:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:29,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928487703] [2024-06-27 20:45:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928487703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:29,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86088475] [2024-06-27 20:45:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:29,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:30,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:30,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 313 transitions, 3242 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:30,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:30,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:30,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:30,539 INFO L124 PetriNetUnfolderBase]: 851/1607 cut-off events. [2024-06-27 20:45:30,539 INFO L125 PetriNetUnfolderBase]: For 106745/106745 co-relation queries the response was YES. [2024-06-27 20:45:30,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9019 conditions, 1607 events. 851/1607 cut-off events. For 106745/106745 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9858 event pairs, 193 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 8829. Up to 1458 conditions per place. [2024-06-27 20:45:30,563 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 296 selfloop transitions, 36 changer transitions 0/334 dead transitions. [2024-06-27 20:45:30,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 334 transitions, 3964 flow [2024-06-27 20:45:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 20:45:30,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 20:45:30,564 INFO L175 Difference]: Start difference. First operand has 410 places, 313 transitions, 3242 flow. Second operand 12 states and 125 transitions. [2024-06-27 20:45:30,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 334 transitions, 3964 flow [2024-06-27 20:45:31,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 334 transitions, 3836 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:31,192 INFO L231 Difference]: Finished difference. Result has 412 places, 313 transitions, 3190 flow [2024-06-27 20:45:31,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3190, PETRI_PLACES=412, PETRI_TRANSITIONS=313} [2024-06-27 20:45:31,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-27 20:45:31,193 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 313 transitions, 3190 flow [2024-06-27 20:45:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:31,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:31,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:31,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 20:45:31,193 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:31,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash 918684269, now seen corresponding path program 7 times [2024-06-27 20:45:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371398168] [2024-06-27 20:45:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371398168] [2024-06-27 20:45:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371398168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:32,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:32,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733674687] [2024-06-27 20:45:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:32,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:32,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 313 transitions, 3190 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:32,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:32,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:32,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:32,806 INFO L124 PetriNetUnfolderBase]: 855/1615 cut-off events. [2024-06-27 20:45:32,806 INFO L125 PetriNetUnfolderBase]: For 108157/108157 co-relation queries the response was YES. [2024-06-27 20:45:32,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 1615 events. 855/1615 cut-off events. For 108157/108157 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9921 event pairs, 173 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 8831. Up to 1514 conditions per place. [2024-06-27 20:45:32,827 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 25 changer transitions 0/335 dead transitions. [2024-06-27 20:45:32,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 335 transitions, 3950 flow [2024-06-27 20:45:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-27 20:45:32,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-27 20:45:32,828 INFO L175 Difference]: Start difference. First operand has 412 places, 313 transitions, 3190 flow. Second operand 12 states and 122 transitions. [2024-06-27 20:45:32,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 335 transitions, 3950 flow [2024-06-27 20:45:33,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 335 transitions, 3864 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:33,343 INFO L231 Difference]: Finished difference. Result has 413 places, 314 transitions, 3202 flow [2024-06-27 20:45:33,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3202, PETRI_PLACES=413, PETRI_TRANSITIONS=314} [2024-06-27 20:45:33,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-27 20:45:33,344 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 314 transitions, 3202 flow [2024-06-27 20:45:33,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:33,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:33,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:33,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 20:45:33,345 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:33,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:33,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1571692427, now seen corresponding path program 8 times [2024-06-27 20:45:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077604451] [2024-06-27 20:45:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077604451] [2024-06-27 20:45:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077604451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357646420] [2024-06-27 20:45:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:34,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:34,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:34,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 314 transitions, 3202 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:34,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:34,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:34,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:35,021 INFO L124 PetriNetUnfolderBase]: 859/1623 cut-off events. [2024-06-27 20:45:35,021 INFO L125 PetriNetUnfolderBase]: For 110718/110718 co-relation queries the response was YES. [2024-06-27 20:45:35,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 1623 events. 859/1623 cut-off events. For 110718/110718 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9949 event pairs, 177 based on Foata normal form. 2/1625 useless extension candidates. Maximal degree in co-relation 8907. Up to 1514 conditions per place. [2024-06-27 20:45:35,043 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 298 selfloop transitions, 35 changer transitions 0/335 dead transitions. [2024-06-27 20:45:35,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 335 transitions, 3976 flow [2024-06-27 20:45:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 20:45:35,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:45:35,044 INFO L175 Difference]: Start difference. First operand has 413 places, 314 transitions, 3202 flow. Second operand 12 states and 124 transitions. [2024-06-27 20:45:35,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 335 transitions, 3976 flow [2024-06-27 20:45:35,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 335 transitions, 3888 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:35,593 INFO L231 Difference]: Finished difference. Result has 415 places, 315 transitions, 3235 flow [2024-06-27 20:45:35,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3235, PETRI_PLACES=415, PETRI_TRANSITIONS=315} [2024-06-27 20:45:35,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-27 20:45:35,593 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 315 transitions, 3235 flow [2024-06-27 20:45:35,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:35,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:35,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:35,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 20:45:35,594 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:35,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash -902319713, now seen corresponding path program 9 times [2024-06-27 20:45:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:35,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324341528] [2024-06-27 20:45:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324341528] [2024-06-27 20:45:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324341528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:36,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:36,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495618351] [2024-06-27 20:45:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:36,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:36,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:36,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 315 transitions, 3235 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:36,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:36,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:37,460 INFO L124 PetriNetUnfolderBase]: 863/1631 cut-off events. [2024-06-27 20:45:37,461 INFO L125 PetriNetUnfolderBase]: For 112755/112755 co-relation queries the response was YES. [2024-06-27 20:45:37,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9168 conditions, 1631 events. 863/1631 cut-off events. For 112755/112755 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10052 event pairs, 177 based on Foata normal form. 2/1633 useless extension candidates. Maximal degree in co-relation 8975. Up to 1506 conditions per place. [2024-06-27 20:45:37,482 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 299 selfloop transitions, 35 changer transitions 0/336 dead transitions. [2024-06-27 20:45:37,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 336 transitions, 4009 flow [2024-06-27 20:45:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 20:45:37,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 20:45:37,483 INFO L175 Difference]: Start difference. First operand has 415 places, 315 transitions, 3235 flow. Second operand 12 states and 125 transitions. [2024-06-27 20:45:37,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 336 transitions, 4009 flow [2024-06-27 20:45:38,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 336 transitions, 3900 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:38,051 INFO L231 Difference]: Finished difference. Result has 417 places, 316 transitions, 3248 flow [2024-06-27 20:45:38,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3248, PETRI_PLACES=417, PETRI_TRANSITIONS=316} [2024-06-27 20:45:38,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-27 20:45:38,051 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 316 transitions, 3248 flow [2024-06-27 20:45:38,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:38,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:38,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:38,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 20:45:38,052 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:38,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -906038783, now seen corresponding path program 10 times [2024-06-27 20:45:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734453068] [2024-06-27 20:45:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:38,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734453068] [2024-06-27 20:45:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734453068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888089408] [2024-06-27 20:45:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:39,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:39,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 316 transitions, 3248 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:39,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:39,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:39,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:39,673 INFO L124 PetriNetUnfolderBase]: 874/1652 cut-off events. [2024-06-27 20:45:39,673 INFO L125 PetriNetUnfolderBase]: For 131452/131452 co-relation queries the response was YES. [2024-06-27 20:45:39,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9635 conditions, 1652 events. 874/1652 cut-off events. For 131452/131452 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10190 event pairs, 182 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 9441. Up to 1468 conditions per place. [2024-06-27 20:45:39,694 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 35 changer transitions 0/339 dead transitions. [2024-06-27 20:45:39,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 339 transitions, 4322 flow [2024-06-27 20:45:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 20:45:39,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:45:39,695 INFO L175 Difference]: Start difference. First operand has 417 places, 316 transitions, 3248 flow. Second operand 12 states and 128 transitions. [2024-06-27 20:45:39,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 339 transitions, 4322 flow [2024-06-27 20:45:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 339 transitions, 4210 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:40,342 INFO L231 Difference]: Finished difference. Result has 419 places, 318 transitions, 3308 flow [2024-06-27 20:45:40,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3308, PETRI_PLACES=419, PETRI_TRANSITIONS=318} [2024-06-27 20:45:40,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-27 20:45:40,342 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 318 transitions, 3308 flow [2024-06-27 20:45:40,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:40,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:40,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:40,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 20:45:40,343 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:40,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash -902463863, now seen corresponding path program 11 times [2024-06-27 20:45:40,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:40,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576421347] [2024-06-27 20:45:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576421347] [2024-06-27 20:45:41,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576421347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:41,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:41,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:41,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328250196] [2024-06-27 20:45:41,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:41,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:41,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:41,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:41,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 318 transitions, 3308 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:41,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:41,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:41,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:42,119 INFO L124 PetriNetUnfolderBase]: 871/1647 cut-off events. [2024-06-27 20:45:42,119 INFO L125 PetriNetUnfolderBase]: For 116943/116943 co-relation queries the response was YES. [2024-06-27 20:45:42,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1647 events. 871/1647 cut-off events. For 116943/116943 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10166 event pairs, 177 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 9077. Up to 1498 conditions per place. [2024-06-27 20:45:42,141 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 35 changer transitions 0/338 dead transitions. [2024-06-27 20:45:42,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 338 transitions, 4036 flow [2024-06-27 20:45:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 20:45:42,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:45:42,142 INFO L175 Difference]: Start difference. First operand has 419 places, 318 transitions, 3308 flow. Second operand 12 states and 126 transitions. [2024-06-27 20:45:42,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 338 transitions, 4036 flow [2024-06-27 20:45:42,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 338 transitions, 3907 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:42,758 INFO L231 Difference]: Finished difference. Result has 423 places, 318 transitions, 3253 flow [2024-06-27 20:45:42,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3253, PETRI_PLACES=423, PETRI_TRANSITIONS=318} [2024-06-27 20:45:42,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-27 20:45:42,759 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 318 transitions, 3253 flow [2024-06-27 20:45:42,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:42,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:42,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 20:45:42,759 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:42,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 668280923, now seen corresponding path program 12 times [2024-06-27 20:45:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812221543] [2024-06-27 20:45:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812221543] [2024-06-27 20:45:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812221543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:43,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25243681] [2024-06-27 20:45:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:43,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:43,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:43,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 318 transitions, 3253 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:43,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:43,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:44,469 INFO L124 PetriNetUnfolderBase]: 875/1655 cut-off events. [2024-06-27 20:45:44,469 INFO L125 PetriNetUnfolderBase]: For 117763/117763 co-relation queries the response was YES. [2024-06-27 20:45:44,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9285 conditions, 1655 events. 875/1655 cut-off events. For 117763/117763 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10241 event pairs, 169 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 9088. Up to 1413 conditions per place. [2024-06-27 20:45:44,491 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 271 selfloop transitions, 66 changer transitions 0/339 dead transitions. [2024-06-27 20:45:44,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 339 transitions, 4043 flow [2024-06-27 20:45:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 20:45:44,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 20:45:44,492 INFO L175 Difference]: Start difference. First operand has 423 places, 318 transitions, 3253 flow. Second operand 12 states and 129 transitions. [2024-06-27 20:45:44,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 339 transitions, 4043 flow [2024-06-27 20:45:45,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 339 transitions, 3959 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:45,007 INFO L231 Difference]: Finished difference. Result has 424 places, 319 transitions, 3357 flow [2024-06-27 20:45:45,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3357, PETRI_PLACES=424, PETRI_TRANSITIONS=319} [2024-06-27 20:45:45,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 20:45:45,008 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 319 transitions, 3357 flow [2024-06-27 20:45:45,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:45,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:45,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:45,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 20:45:45,008 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:45,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 668275343, now seen corresponding path program 13 times [2024-06-27 20:45:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:45,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679567243] [2024-06-27 20:45:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:46,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:46,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679567243] [2024-06-27 20:45:46,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679567243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:46,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:46,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887791539] [2024-06-27 20:45:46,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:46,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:46,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:46,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:46,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 319 transitions, 3357 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:46,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:46,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:46,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:46,728 INFO L124 PetriNetUnfolderBase]: 915/1735 cut-off events. [2024-06-27 20:45:46,728 INFO L125 PetriNetUnfolderBase]: For 218042/218042 co-relation queries the response was YES. [2024-06-27 20:45:46,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11417 conditions, 1735 events. 915/1735 cut-off events. For 218042/218042 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10709 event pairs, 183 based on Foata normal form. 2/1737 useless extension candidates. Maximal degree in co-relation 11219. Up to 1405 conditions per place. [2024-06-27 20:45:46,752 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 68 changer transitions 0/346 dead transitions. [2024-06-27 20:45:46,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 346 transitions, 4515 flow [2024-06-27 20:45:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 20:45:46,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 20:45:46,753 INFO L175 Difference]: Start difference. First operand has 424 places, 319 transitions, 3357 flow. Second operand 12 states and 135 transitions. [2024-06-27 20:45:46,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 346 transitions, 4515 flow [2024-06-27 20:45:47,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 346 transitions, 4337 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:47,615 INFO L231 Difference]: Finished difference. Result has 426 places, 321 transitions, 3425 flow [2024-06-27 20:45:47,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3425, PETRI_PLACES=426, PETRI_TRANSITIONS=321} [2024-06-27 20:45:47,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-27 20:45:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 321 transitions, 3425 flow [2024-06-27 20:45:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:47,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 20:45:47,616 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:47,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash 468979133, now seen corresponding path program 14 times [2024-06-27 20:45:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:47,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79894620] [2024-06-27 20:45:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:47,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79894620] [2024-06-27 20:45:48,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79894620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:48,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:48,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:48,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967798929] [2024-06-27 20:45:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:48,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:48,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:48,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:48,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 321 transitions, 3425 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:48,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:48,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:48,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:49,280 INFO L124 PetriNetUnfolderBase]: 919/1743 cut-off events. [2024-06-27 20:45:49,281 INFO L125 PetriNetUnfolderBase]: For 221774/221774 co-relation queries the response was YES. [2024-06-27 20:45:49,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 1743 events. 919/1743 cut-off events. For 221774/221774 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10792 event pairs, 191 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 11289. Up to 1501 conditions per place. [2024-06-27 20:45:49,305 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 279 selfloop transitions, 61 changer transitions 0/342 dead transitions. [2024-06-27 20:45:49,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 342 transitions, 4225 flow [2024-06-27 20:45:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 20:45:49,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 20:45:49,305 INFO L175 Difference]: Start difference. First operand has 426 places, 321 transitions, 3425 flow. Second operand 12 states and 130 transitions. [2024-06-27 20:45:49,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 342 transitions, 4225 flow [2024-06-27 20:45:50,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 342 transitions, 4070 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 20:45:50,157 INFO L231 Difference]: Finished difference. Result has 430 places, 322 transitions, 3452 flow [2024-06-27 20:45:50,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3452, PETRI_PLACES=430, PETRI_TRANSITIONS=322} [2024-06-27 20:45:50,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-27 20:45:50,157 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 322 transitions, 3452 flow [2024-06-27 20:45:50,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:50,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:50,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 20:45:50,158 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:50,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash 468973553, now seen corresponding path program 15 times [2024-06-27 20:45:50,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:50,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779561003] [2024-06-27 20:45:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779561003] [2024-06-27 20:45:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779561003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:51,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:51,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:51,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010691255] [2024-06-27 20:45:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:51,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:51,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:51,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:51,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 322 transitions, 3452 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:51,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:51,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:51,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:51,791 INFO L124 PetriNetUnfolderBase]: 923/1751 cut-off events. [2024-06-27 20:45:51,792 INFO L125 PetriNetUnfolderBase]: For 224854/224854 co-relation queries the response was YES. [2024-06-27 20:45:51,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11577 conditions, 1751 events. 923/1751 cut-off events. For 224854/224854 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10856 event pairs, 189 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 11376. Up to 1495 conditions per place. [2024-06-27 20:45:51,815 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 279 selfloop transitions, 62 changer transitions 0/343 dead transitions. [2024-06-27 20:45:51,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 343 transitions, 4252 flow [2024-06-27 20:45:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 20:45:51,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 20:45:51,816 INFO L175 Difference]: Start difference. First operand has 430 places, 322 transitions, 3452 flow. Second operand 12 states and 131 transitions. [2024-06-27 20:45:51,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 343 transitions, 4252 flow [2024-06-27 20:45:52,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 343 transitions, 4080 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:52,707 INFO L231 Difference]: Finished difference. Result has 432 places, 323 transitions, 3466 flow [2024-06-27 20:45:52,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3466, PETRI_PLACES=432, PETRI_TRANSITIONS=323} [2024-06-27 20:45:52,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-27 20:45:52,708 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 323 transitions, 3466 flow [2024-06-27 20:45:52,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:52,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:52,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:52,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 20:45:52,708 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:52,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash -530454677, now seen corresponding path program 16 times [2024-06-27 20:45:52,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:52,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974488753] [2024-06-27 20:45:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:53,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974488753] [2024-06-27 20:45:53,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974488753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:53,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:53,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:53,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275262065] [2024-06-27 20:45:53,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:53,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:53,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:53,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:53,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 323 transitions, 3466 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:53,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:53,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:53,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:54,591 INFO L124 PetriNetUnfolderBase]: 927/1759 cut-off events. [2024-06-27 20:45:54,591 INFO L125 PetriNetUnfolderBase]: For 228419/228419 co-relation queries the response was YES. [2024-06-27 20:45:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11642 conditions, 1759 events. 927/1759 cut-off events. For 228419/228419 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10896 event pairs, 205 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 11440. Up to 1517 conditions per place. [2024-06-27 20:45:54,615 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 285 selfloop transitions, 57 changer transitions 0/344 dead transitions. [2024-06-27 20:45:54,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 344 transitions, 4274 flow [2024-06-27 20:45:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 20:45:54,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 20:45:54,616 INFO L175 Difference]: Start difference. First operand has 432 places, 323 transitions, 3466 flow. Second operand 12 states and 131 transitions. [2024-06-27 20:45:54,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 344 transitions, 4274 flow [2024-06-27 20:45:55,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 344 transitions, 4098 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:55,601 INFO L231 Difference]: Finished difference. Result has 434 places, 324 transitions, 3468 flow [2024-06-27 20:45:55,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3468, PETRI_PLACES=434, PETRI_TRANSITIONS=324} [2024-06-27 20:45:55,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2024-06-27 20:45:55,602 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 324 transitions, 3468 flow [2024-06-27 20:45:55,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:55,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:55,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:55,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 20:45:55,603 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:55,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash 673006797, now seen corresponding path program 17 times [2024-06-27 20:45:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:55,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215356254] [2024-06-27 20:45:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215356254] [2024-06-27 20:45:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215356254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546930936] [2024-06-27 20:45:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:56,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:56,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 324 transitions, 3468 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:56,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:56,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:56,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:57,234 INFO L124 PetriNetUnfolderBase]: 911/1731 cut-off events. [2024-06-27 20:45:57,235 INFO L125 PetriNetUnfolderBase]: For 213116/213116 co-relation queries the response was YES. [2024-06-27 20:45:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9841 conditions, 1731 events. 911/1731 cut-off events. For 213116/213116 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10768 event pairs, 177 based on Foata normal form. 12/1743 useless extension candidates. Maximal degree in co-relation 9638. Up to 1447 conditions per place. [2024-06-27 20:45:57,259 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 270 selfloop transitions, 69 changer transitions 7/348 dead transitions. [2024-06-27 20:45:57,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 348 transitions, 4272 flow [2024-06-27 20:45:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 20:45:57,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-27 20:45:57,260 INFO L175 Difference]: Start difference. First operand has 434 places, 324 transitions, 3468 flow. Second operand 12 states and 133 transitions. [2024-06-27 20:45:57,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 348 transitions, 4272 flow [2024-06-27 20:45:57,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 348 transitions, 4076 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:57,973 INFO L231 Difference]: Finished difference. Result has 436 places, 321 transitions, 3381 flow [2024-06-27 20:45:57,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3381, PETRI_PLACES=436, PETRI_TRANSITIONS=321} [2024-06-27 20:45:57,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-27 20:45:57,973 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 321 transitions, 3381 flow [2024-06-27 20:45:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:57,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:57,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:57,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 20:45:57,974 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:45:57,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash -530460257, now seen corresponding path program 18 times [2024-06-27 20:45:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:57,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175892574] [2024-06-27 20:45:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175892574] [2024-06-27 20:45:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175892574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:58,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:58,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857998334] [2024-06-27 20:45:58,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:58,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:59,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:59,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 321 transitions, 3381 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:45:59,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:59,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:59,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:59,689 INFO L124 PetriNetUnfolderBase]: 891/1691 cut-off events. [2024-06-27 20:45:59,689 INFO L125 PetriNetUnfolderBase]: For 129690/129690 co-relation queries the response was YES. [2024-06-27 20:45:59,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 1691 events. 891/1691 cut-off events. For 129690/129690 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10513 event pairs, 191 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 9440. Up to 1441 conditions per place. [2024-06-27 20:45:59,713 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 285 selfloop transitions, 55 changer transitions 0/342 dead transitions. [2024-06-27 20:45:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 342 transitions, 4183 flow [2024-06-27 20:45:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:45:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:45:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 20:45:59,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 20:45:59,714 INFO L175 Difference]: Start difference. First operand has 436 places, 321 transitions, 3381 flow. Second operand 12 states and 131 transitions. [2024-06-27 20:45:59,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 342 transitions, 4183 flow [2024-06-27 20:46:00,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 342 transitions, 4016 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:46:00,372 INFO L231 Difference]: Finished difference. Result has 436 places, 322 transitions, 3390 flow [2024-06-27 20:46:00,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3390, PETRI_PLACES=436, PETRI_TRANSITIONS=322} [2024-06-27 20:46:00,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-27 20:46:00,373 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 322 transitions, 3390 flow [2024-06-27 20:46:00,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:00,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:00,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 20:46:00,373 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -530604407, now seen corresponding path program 19 times [2024-06-27 20:46:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:00,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043362312] [2024-06-27 20:46:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:01,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:01,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043362312] [2024-06-27 20:46:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043362312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:01,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057537037] [2024-06-27 20:46:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:01,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:01,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:01,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:01,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 322 transitions, 3390 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:01,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:01,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:01,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:02,185 INFO L124 PetriNetUnfolderBase]: 895/1699 cut-off events. [2024-06-27 20:46:02,185 INFO L125 PetriNetUnfolderBase]: For 133380/133380 co-relation queries the response was YES. [2024-06-27 20:46:02,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9713 conditions, 1699 events. 895/1699 cut-off events. For 133380/133380 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10559 event pairs, 191 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 9508. Up to 1427 conditions per place. [2024-06-27 20:46:02,208 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 285 selfloop transitions, 56 changer transitions 0/343 dead transitions. [2024-06-27 20:46:02,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 343 transitions, 4192 flow [2024-06-27 20:46:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:46:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:46:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 20:46:02,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:46:02,209 INFO L175 Difference]: Start difference. First operand has 436 places, 322 transitions, 3390 flow. Second operand 12 states and 132 transitions. [2024-06-27 20:46:02,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 343 transitions, 4192 flow [2024-06-27 20:46:02,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 343 transitions, 4026 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 20:46:02,871 INFO L231 Difference]: Finished difference. Result has 438 places, 323 transitions, 3404 flow [2024-06-27 20:46:02,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3404, PETRI_PLACES=438, PETRI_TRANSITIONS=323} [2024-06-27 20:46:02,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-27 20:46:02,872 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 323 transitions, 3404 flow [2024-06-27 20:46:02,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:02,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:02,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:02,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 20:46:02,873 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:02,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -534179327, now seen corresponding path program 20 times [2024-06-27 20:46:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659844387] [2024-06-27 20:46:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:03,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659844387] [2024-06-27 20:46:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659844387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:03,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:03,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:03,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218394482] [2024-06-27 20:46:03,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:03,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:03,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:03,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:04,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:04,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 323 transitions, 3404 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:04,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:04,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:04,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:04,560 INFO L124 PetriNetUnfolderBase]: 906/1720 cut-off events. [2024-06-27 20:46:04,560 INFO L125 PetriNetUnfolderBase]: For 155644/155644 co-relation queries the response was YES. [2024-06-27 20:46:04,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10250 conditions, 1720 events. 906/1720 cut-off events. For 155644/155644 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10722 event pairs, 200 based on Foata normal form. 2/1722 useless extension candidates. Maximal degree in co-relation 10044. Up to 1347 conditions per place. [2024-06-27 20:46:04,585 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 281 selfloop transitions, 63 changer transitions 0/346 dead transitions. [2024-06-27 20:46:04,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 346 transitions, 4546 flow [2024-06-27 20:46:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:46:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:46:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 20:46:04,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:46:04,586 INFO L175 Difference]: Start difference. First operand has 438 places, 323 transitions, 3404 flow. Second operand 12 states and 132 transitions. [2024-06-27 20:46:04,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 346 transitions, 4546 flow [2024-06-27 20:46:05,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 346 transitions, 4376 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 20:46:05,286 INFO L231 Difference]: Finished difference. Result has 440 places, 325 transitions, 3494 flow [2024-06-27 20:46:05,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3494, PETRI_PLACES=440, PETRI_TRANSITIONS=325} [2024-06-27 20:46:05,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 20:46:05,287 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 325 transitions, 3494 flow [2024-06-27 20:46:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:05,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:05,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 20:46:05,287 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:05,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash 6530985, now seen corresponding path program 1 times [2024-06-27 20:46:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:05,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512232815] [2024-06-27 20:46:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:06,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:06,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512232815] [2024-06-27 20:46:06,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512232815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:06,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:06,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:46:06,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994796534] [2024-06-27 20:46:06,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:06,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:46:06,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:46:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:46:06,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:06,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 325 transitions, 3494 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:06,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:06,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:06,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:06,745 INFO L124 PetriNetUnfolderBase]: 933/1781 cut-off events. [2024-06-27 20:46:06,745 INFO L125 PetriNetUnfolderBase]: For 264243/264243 co-relation queries the response was YES. [2024-06-27 20:46:06,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11209 conditions, 1781 events. 933/1781 cut-off events. For 264243/264243 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11120 event pairs, 189 based on Foata normal form. 8/1789 useless extension candidates. Maximal degree in co-relation 11002. Up to 1416 conditions per place. [2024-06-27 20:46:06,768 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 66 changer transitions 8/351 dead transitions. [2024-06-27 20:46:06,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 351 transitions, 4576 flow [2024-06-27 20:46:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:46:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:46:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 20:46:06,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 20:46:06,769 INFO L175 Difference]: Start difference. First operand has 440 places, 325 transitions, 3494 flow. Second operand 12 states and 134 transitions. [2024-06-27 20:46:06,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 351 transitions, 4576 flow [2024-06-27 20:46:07,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 351 transitions, 4429 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 20:46:07,709 INFO L231 Difference]: Finished difference. Result has 444 places, 322 transitions, 3443 flow [2024-06-27 20:46:07,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3443, PETRI_PLACES=444, PETRI_TRANSITIONS=322} [2024-06-27 20:46:07,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 20:46:07,710 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 322 transitions, 3443 flow [2024-06-27 20:46:07,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:07,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:07,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:07,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 20:46:07,710 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:07,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash -200548891, now seen corresponding path program 21 times [2024-06-27 20:46:07,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:07,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488943383] [2024-06-27 20:46:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:08,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:08,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488943383] [2024-06-27 20:46:08,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488943383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:08,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:08,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371912079] [2024-06-27 20:46:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:08,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:08,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:08,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 322 transitions, 3443 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:08,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:08,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:08,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:09,259 INFO L124 PetriNetUnfolderBase]: 911/1735 cut-off events. [2024-06-27 20:46:09,259 INFO L125 PetriNetUnfolderBase]: For 192788/192788 co-relation queries the response was YES. [2024-06-27 20:46:09,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10656 conditions, 1735 events. 911/1735 cut-off events. For 192788/192788 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10787 event pairs, 190 based on Foata normal form. 2/1737 useless extension candidates. Maximal degree in co-relation 10447. Up to 1440 conditions per place. [2024-06-27 20:46:09,284 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 278 selfloop transitions, 62 changer transitions 0/342 dead transitions. [2024-06-27 20:46:09,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 342 transitions, 4181 flow [2024-06-27 20:46:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:46:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:46:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 20:46:09,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:46:09,285 INFO L175 Difference]: Start difference. First operand has 444 places, 322 transitions, 3443 flow. Second operand 12 states and 128 transitions. [2024-06-27 20:46:09,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 342 transitions, 4181 flow [2024-06-27 20:46:10,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 342 transitions, 4011 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:10,208 INFO L231 Difference]: Finished difference. Result has 442 places, 322 transitions, 3401 flow [2024-06-27 20:46:10,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3273, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3401, PETRI_PLACES=442, PETRI_TRANSITIONS=322} [2024-06-27 20:46:10,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-27 20:46:10,209 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 322 transitions, 3401 flow [2024-06-27 20:46:10,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:10,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:10,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:10,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 20:46:10,210 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:10,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1737814347, now seen corresponding path program 22 times [2024-06-27 20:46:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400411072] [2024-06-27 20:46:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:11,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:11,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400411072] [2024-06-27 20:46:11,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400411072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:11,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:11,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:11,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386794786] [2024-06-27 20:46:11,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:11,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:11,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:11,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:11,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:11,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 322 transitions, 3401 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:11,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:11,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:11,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:11,975 INFO L124 PetriNetUnfolderBase]: 915/1743 cut-off events. [2024-06-27 20:46:11,975 INFO L125 PetriNetUnfolderBase]: For 193772/193772 co-relation queries the response was YES. [2024-06-27 20:46:11,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1743 events. 915/1743 cut-off events. For 193772/193772 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10829 event pairs, 201 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 10515. Up to 1511 conditions per place. [2024-06-27 20:46:11,999 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 39 changer transitions 0/342 dead transitions. [2024-06-27 20:46:11,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 342 transitions, 4189 flow [2024-06-27 20:46:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:46:12,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-27 20:46:12,001 INFO L175 Difference]: Start difference. First operand has 442 places, 322 transitions, 3401 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:46:12,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 342 transitions, 4189 flow [2024-06-27 20:46:12,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 342 transitions, 3995 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 20:46:12,905 INFO L231 Difference]: Finished difference. Result has 440 places, 323 transitions, 3361 flow [2024-06-27 20:46:12,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3361, PETRI_PLACES=440, PETRI_TRANSITIONS=323} [2024-06-27 20:46:12,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 20:46:12,905 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 323 transitions, 3361 flow [2024-06-27 20:46:12,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:12,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:12,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:12,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 20:46:12,906 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:12,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash -752567929, now seen corresponding path program 23 times [2024-06-27 20:46:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:12,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837710707] [2024-06-27 20:46:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837710707] [2024-06-27 20:46:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837710707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:13,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:13,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651995888] [2024-06-27 20:46:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:14,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:14,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 323 transitions, 3361 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:14,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:14,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:14,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:14,648 INFO L124 PetriNetUnfolderBase]: 926/1764 cut-off events. [2024-06-27 20:46:14,648 INFO L125 PetriNetUnfolderBase]: For 216163/216163 co-relation queries the response was YES. [2024-06-27 20:46:14,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11224 conditions, 1764 events. 926/1764 cut-off events. For 216163/216163 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11011 event pairs, 217 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 11017. Up to 1504 conditions per place. [2024-06-27 20:46:14,674 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 277 selfloop transitions, 66 changer transitions 0/345 dead transitions. [2024-06-27 20:46:14,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 345 transitions, 4511 flow [2024-06-27 20:46:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:46:14,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:46:14,675 INFO L175 Difference]: Start difference. First operand has 440 places, 323 transitions, 3361 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:46:14,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 345 transitions, 4511 flow [2024-06-27 20:46:15,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 345 transitions, 4355 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 20:46:15,632 INFO L231 Difference]: Finished difference. Result has 442 places, 325 transitions, 3485 flow [2024-06-27 20:46:15,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3485, PETRI_PLACES=442, PETRI_TRANSITIONS=325} [2024-06-27 20:46:15,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-27 20:46:15,632 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 325 transitions, 3485 flow [2024-06-27 20:46:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:15,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:15,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:15,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 20:46:15,632 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -752562349, now seen corresponding path program 24 times [2024-06-27 20:46:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032830631] [2024-06-27 20:46:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032830631] [2024-06-27 20:46:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032830631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893840209] [2024-06-27 20:46:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:16,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:16,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 325 transitions, 3485 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:16,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:16,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:16,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:17,399 INFO L124 PetriNetUnfolderBase]: 923/1759 cut-off events. [2024-06-27 20:46:17,399 INFO L125 PetriNetUnfolderBase]: For 189735/189735 co-relation queries the response was YES. [2024-06-27 20:46:17,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10767 conditions, 1759 events. 923/1759 cut-off events. For 189735/189735 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10998 event pairs, 225 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 10559. Up to 1550 conditions per place. [2024-06-27 20:46:17,421 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 276 selfloop transitions, 66 changer transitions 0/344 dead transitions. [2024-06-27 20:46:17,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 344 transitions, 4229 flow [2024-06-27 20:46:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:46:17,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 20:46:17,422 INFO L175 Difference]: Start difference. First operand has 442 places, 325 transitions, 3485 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:46:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 344 transitions, 4229 flow [2024-06-27 20:46:18,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 344 transitions, 4040 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 20:46:18,317 INFO L231 Difference]: Finished difference. Result has 445 places, 325 transitions, 3439 flow [2024-06-27 20:46:18,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3439, PETRI_PLACES=445, PETRI_TRANSITIONS=325} [2024-06-27 20:46:18,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:46:18,317 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 325 transitions, 3439 flow [2024-06-27 20:46:18,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:18,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:18,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:18,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 20:46:18,318 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:18,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -752712079, now seen corresponding path program 25 times [2024-06-27 20:46:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:18,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384213917] [2024-06-27 20:46:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:18,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384213917] [2024-06-27 20:46:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384213917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:19,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998493629] [2024-06-27 20:46:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:19,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:19,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:19,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 325 transitions, 3439 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:19,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:19,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:19,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:19,996 INFO L124 PetriNetUnfolderBase]: 927/1767 cut-off events. [2024-06-27 20:46:19,996 INFO L125 PetriNetUnfolderBase]: For 188549/188549 co-relation queries the response was YES. [2024-06-27 20:46:20,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10805 conditions, 1767 events. 927/1767 cut-off events. For 188549/188549 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11042 event pairs, 207 based on Foata normal form. 2/1769 useless extension candidates. Maximal degree in co-relation 10596. Up to 1438 conditions per place. [2024-06-27 20:46:20,023 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 277 selfloop transitions, 66 changer transitions 0/345 dead transitions. [2024-06-27 20:46:20,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 345 transitions, 4239 flow [2024-06-27 20:46:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:46:20,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:46:20,024 INFO L175 Difference]: Start difference. First operand has 445 places, 325 transitions, 3439 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:46:20,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 345 transitions, 4239 flow [2024-06-27 20:46:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 345 transitions, 4093 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:20,965 INFO L231 Difference]: Finished difference. Result has 445 places, 326 transitions, 3497 flow [2024-06-27 20:46:20,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3497, PETRI_PLACES=445, PETRI_TRANSITIONS=326} [2024-06-27 20:46:20,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:46:20,965 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 326 transitions, 3497 flow [2024-06-27 20:46:20,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:20,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:20,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:20,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 20:46:20,965 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:20,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash -756286999, now seen corresponding path program 26 times [2024-06-27 20:46:20,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:20,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390802852] [2024-06-27 20:46:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:21,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:21,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390802852] [2024-06-27 20:46:21,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390802852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:21,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:21,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400953536] [2024-06-27 20:46:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:21,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:21,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:22,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:22,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 326 transitions, 3497 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:22,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:22,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:22,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:22,653 INFO L124 PetriNetUnfolderBase]: 931/1775 cut-off events. [2024-06-27 20:46:22,653 INFO L125 PetriNetUnfolderBase]: For 190853/190853 co-relation queries the response was YES. [2024-06-27 20:46:22,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10959 conditions, 1775 events. 931/1775 cut-off events. For 190853/190853 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11106 event pairs, 212 based on Foata normal form. 2/1777 useless extension candidates. Maximal degree in co-relation 10750. Up to 1350 conditions per place. [2024-06-27 20:46:22,679 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 66 changer transitions 0/346 dead transitions. [2024-06-27 20:46:22,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 346 transitions, 4297 flow [2024-06-27 20:46:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:46:22,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:46:22,680 INFO L175 Difference]: Start difference. First operand has 445 places, 326 transitions, 3497 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:46:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 346 transitions, 4297 flow [2024-06-27 20:46:23,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 346 transitions, 4107 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:23,568 INFO L231 Difference]: Finished difference. Result has 445 places, 327 transitions, 3513 flow [2024-06-27 20:46:23,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3513, PETRI_PLACES=445, PETRI_TRANSITIONS=327} [2024-06-27 20:46:23,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:46:23,568 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 327 transitions, 3513 flow [2024-06-27 20:46:23,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:23,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:23,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:23,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 20:46:23,570 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:23,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:23,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1097988713, now seen corresponding path program 2 times [2024-06-27 20:46:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689772513] [2024-06-27 20:46:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689772513] [2024-06-27 20:46:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689772513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:46:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916593438] [2024-06-27 20:46:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:46:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:46:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:46:24,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:24,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 327 transitions, 3513 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:24,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:24,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:24,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:25,208 INFO L124 PetriNetUnfolderBase]: 947/1811 cut-off events. [2024-06-27 20:46:25,208 INFO L125 PetriNetUnfolderBase]: For 256032/256032 co-relation queries the response was YES. [2024-06-27 20:46:25,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11000 conditions, 1811 events. 947/1811 cut-off events. For 256032/256032 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11373 event pairs, 182 based on Foata normal form. 10/1821 useless extension candidates. Maximal degree in co-relation 10792. Up to 1371 conditions per place. [2024-06-27 20:46:25,235 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 100 changer transitions 15/349 dead transitions. [2024-06-27 20:46:25,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 349 transitions, 4311 flow [2024-06-27 20:46:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:46:25,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:46:25,236 INFO L175 Difference]: Start difference. First operand has 445 places, 327 transitions, 3513 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:46:25,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 349 transitions, 4311 flow [2024-06-27 20:46:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 349 transitions, 4119 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:26,142 INFO L231 Difference]: Finished difference. Result has 445 places, 317 transitions, 3411 flow [2024-06-27 20:46:26,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3411, PETRI_PLACES=445, PETRI_TRANSITIONS=317} [2024-06-27 20:46:26,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:46:26,142 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 317 transitions, 3411 flow [2024-06-27 20:46:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:26,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:26,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:26,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 20:46:26,143 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:26,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 815406931, now seen corresponding path program 27 times [2024-06-27 20:46:26,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:26,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526793786] [2024-06-27 20:46:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:27,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:27,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526793786] [2024-06-27 20:46:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526793786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:27,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:27,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:27,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115539371] [2024-06-27 20:46:27,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:27,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:27,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:27,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 317 transitions, 3411 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:27,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:27,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:27,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:28,008 INFO L124 PetriNetUnfolderBase]: 901/1741 cut-off events. [2024-06-27 20:46:28,008 INFO L125 PetriNetUnfolderBase]: For 183575/183575 co-relation queries the response was YES. [2024-06-27 20:46:28,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10661 conditions, 1741 events. 901/1741 cut-off events. For 183575/183575 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10987 event pairs, 182 based on Foata normal form. 2/1743 useless extension candidates. Maximal degree in co-relation 10466. Up to 1367 conditions per place. [2024-06-27 20:46:28,029 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 94 changer transitions 0/336 dead transitions. [2024-06-27 20:46:28,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 336 transitions, 4205 flow [2024-06-27 20:46:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:46:28,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:46:28,029 INFO L175 Difference]: Start difference. First operand has 445 places, 317 transitions, 3411 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:46:28,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 336 transitions, 4205 flow [2024-06-27 20:46:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 336 transitions, 3975 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-27 20:46:28,891 INFO L231 Difference]: Finished difference. Result has 441 places, 318 transitions, 3443 flow [2024-06-27 20:46:28,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3443, PETRI_PLACES=441, PETRI_TRANSITIONS=318} [2024-06-27 20:46:28,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 20:46:28,891 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 318 transitions, 3443 flow [2024-06-27 20:46:28,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:28,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:28,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:28,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 20:46:28,892 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:28,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 815401351, now seen corresponding path program 28 times [2024-06-27 20:46:28,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:28,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702596619] [2024-06-27 20:46:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702596619] [2024-06-27 20:46:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702596619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331546659] [2024-06-27 20:46:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:29,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:29,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 318 transitions, 3443 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:29,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:29,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:29,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:30,606 INFO L124 PetriNetUnfolderBase]: 941/1821 cut-off events. [2024-06-27 20:46:30,606 INFO L125 PetriNetUnfolderBase]: For 291455/291455 co-relation queries the response was YES. [2024-06-27 20:46:30,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12799 conditions, 1821 events. 941/1821 cut-off events. For 291455/291455 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11535 event pairs, 196 based on Foata normal form. 2/1823 useless extension candidates. Maximal degree in co-relation 12606. Up to 1339 conditions per place. [2024-06-27 20:46:30,632 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 243 selfloop transitions, 98 changer transitions 0/343 dead transitions. [2024-06-27 20:46:30,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 343 transitions, 4625 flow [2024-06-27 20:46:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:46:30,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:46:30,633 INFO L175 Difference]: Start difference. First operand has 441 places, 318 transitions, 3443 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:46:30,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 343 transitions, 4625 flow [2024-06-27 20:46:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 343 transitions, 4373 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 20:46:31,891 INFO L231 Difference]: Finished difference. Result has 443 places, 320 transitions, 3529 flow [2024-06-27 20:46:31,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3529, PETRI_PLACES=443, PETRI_TRANSITIONS=320} [2024-06-27 20:46:31,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-27 20:46:31,891 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 320 transitions, 3529 flow [2024-06-27 20:46:31,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:31,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:31,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 20:46:31,892 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:31,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash -725163753, now seen corresponding path program 29 times [2024-06-27 20:46:31,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:31,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260988262] [2024-06-27 20:46:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:31,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:32,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:32,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260988262] [2024-06-27 20:46:32,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260988262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:32,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:32,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463770502] [2024-06-27 20:46:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:32,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:32,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:32,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 320 transitions, 3529 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:32,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:32,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:32,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:33,461 INFO L124 PetriNetUnfolderBase]: 925/1793 cut-off events. [2024-06-27 20:46:33,461 INFO L125 PetriNetUnfolderBase]: For 271663/271663 co-relation queries the response was YES. [2024-06-27 20:46:33,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10952 conditions, 1793 events. 925/1793 cut-off events. For 271663/271663 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11386 event pairs, 186 based on Foata normal form. 12/1805 useless extension candidates. Maximal degree in co-relation 10758. Up to 1377 conditions per place. [2024-06-27 20:46:33,487 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 101 changer transitions 7/342 dead transitions. [2024-06-27 20:46:33,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 342 transitions, 4313 flow [2024-06-27 20:46:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:46:33,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:46:33,488 INFO L175 Difference]: Start difference. First operand has 443 places, 320 transitions, 3529 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:46:33,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 342 transitions, 4313 flow [2024-06-27 20:46:34,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 342 transitions, 4044 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-27 20:46:34,384 INFO L231 Difference]: Finished difference. Result has 444 places, 317 transitions, 3443 flow [2024-06-27 20:46:34,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3443, PETRI_PLACES=444, PETRI_TRANSITIONS=317} [2024-06-27 20:46:34,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 20:46:34,385 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 317 transitions, 3443 flow [2024-06-27 20:46:34,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:34,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:34,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:34,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 20:46:34,385 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:34,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash 823035287, now seen corresponding path program 3 times [2024-06-27 20:46:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:34,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422111387] [2024-06-27 20:46:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422111387] [2024-06-27 20:46:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422111387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:35,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:35,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:46:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5603306] [2024-06-27 20:46:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:46:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:46:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:46:35,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:35,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 317 transitions, 3443 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:35,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:35,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:35,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:35,920 INFO L124 PetriNetUnfolderBase]: 935/1819 cut-off events. [2024-06-27 20:46:35,920 INFO L125 PetriNetUnfolderBase]: For 304411/304411 co-relation queries the response was YES. [2024-06-27 20:46:35,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12108 conditions, 1819 events. 935/1819 cut-off events. For 304411/304411 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11532 event pairs, 198 based on Foata normal form. 8/1827 useless extension candidates. Maximal degree in co-relation 11915. Up to 1246 conditions per place. [2024-06-27 20:46:35,946 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 96 changer transitions 8/342 dead transitions. [2024-06-27 20:46:35,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 342 transitions, 4557 flow [2024-06-27 20:46:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:46:35,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:46:35,947 INFO L175 Difference]: Start difference. First operand has 444 places, 317 transitions, 3443 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:46:35,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 342 transitions, 4557 flow [2024-06-27 20:46:37,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 342 transitions, 4263 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-27 20:46:37,063 INFO L231 Difference]: Finished difference. Result has 441 places, 314 transitions, 3324 flow [2024-06-27 20:46:37,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3324, PETRI_PLACES=441, PETRI_TRANSITIONS=314} [2024-06-27 20:46:37,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 20:46:37,064 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 314 transitions, 3324 flow [2024-06-27 20:46:37,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:37,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:37,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:37,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 20:46:37,064 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:37,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash 616105141, now seen corresponding path program 30 times [2024-06-27 20:46:37,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017016480] [2024-06-27 20:46:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:38,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017016480] [2024-06-27 20:46:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017016480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151513862] [2024-06-27 20:46:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:38,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:38,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:38,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 314 transitions, 3324 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:38,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:38,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:38,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:38,894 INFO L124 PetriNetUnfolderBase]: 920/1786 cut-off events. [2024-06-27 20:46:38,895 INFO L125 PetriNetUnfolderBase]: For 255600/255600 co-relation queries the response was YES. [2024-06-27 20:46:38,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11944 conditions, 1786 events. 920/1786 cut-off events. For 255600/255600 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 11262 event pairs, 202 based on Foata normal form. 2/1788 useless extension candidates. Maximal degree in co-relation 11753. Up to 1421 conditions per place. [2024-06-27 20:46:38,917 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 249 selfloop transitions, 82 changer transitions 0/333 dead transitions. [2024-06-27 20:46:38,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 333 transitions, 4110 flow [2024-06-27 20:46:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:46:38,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:46:38,918 INFO L175 Difference]: Start difference. First operand has 441 places, 314 transitions, 3324 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:46:38,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 333 transitions, 4110 flow [2024-06-27 20:46:39,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 333 transitions, 3926 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:39,872 INFO L231 Difference]: Finished difference. Result has 438 places, 315 transitions, 3376 flow [2024-06-27 20:46:39,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3376, PETRI_PLACES=438, PETRI_TRANSITIONS=315} [2024-06-27 20:46:39,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-27 20:46:39,872 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 315 transitions, 3376 flow [2024-06-27 20:46:39,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:39,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:39,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:39,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 20:46:39,873 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:39,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash 616099561, now seen corresponding path program 31 times [2024-06-27 20:46:39,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:39,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135867377] [2024-06-27 20:46:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:40,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:40,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135867377] [2024-06-27 20:46:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135867377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:40,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999717655] [2024-06-27 20:46:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:40,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:40,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:41,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:41,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 315 transitions, 3376 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:41,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:41,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:41,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:41,634 INFO L124 PetriNetUnfolderBase]: 924/1794 cut-off events. [2024-06-27 20:46:41,635 INFO L125 PetriNetUnfolderBase]: For 250495/250495 co-relation queries the response was YES. [2024-06-27 20:46:41,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12034 conditions, 1794 events. 924/1794 cut-off events. For 250495/250495 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11358 event pairs, 200 based on Foata normal form. 2/1796 useless extension candidates. Maximal degree in co-relation 11845. Up to 1401 conditions per place. [2024-06-27 20:46:41,661 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 84 changer transitions 0/334 dead transitions. [2024-06-27 20:46:41,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 334 transitions, 4162 flow [2024-06-27 20:46:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:46:41,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:46:41,662 INFO L175 Difference]: Start difference. First operand has 438 places, 315 transitions, 3376 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:46:41,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 334 transitions, 4162 flow [2024-06-27 20:46:42,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 334 transitions, 3938 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 20:46:42,742 INFO L231 Difference]: Finished difference. Result has 440 places, 316 transitions, 3394 flow [2024-06-27 20:46:42,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=440, PETRI_TRANSITIONS=316} [2024-06-27 20:46:42,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 20:46:42,743 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 316 transitions, 3394 flow [2024-06-27 20:46:42,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:42,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:42,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:42,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 20:46:42,743 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:42,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash -931966923, now seen corresponding path program 32 times [2024-06-27 20:46:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168359468] [2024-06-27 20:46:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:43,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168359468] [2024-06-27 20:46:43,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168359468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:43,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:43,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:43,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195853656] [2024-06-27 20:46:43,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:43,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:43,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:44,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:44,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 316 transitions, 3394 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:44,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:44,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:44,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:44,550 INFO L124 PetriNetUnfolderBase]: 928/1802 cut-off events. [2024-06-27 20:46:44,550 INFO L125 PetriNetUnfolderBase]: For 250501/250501 co-relation queries the response was YES. [2024-06-27 20:46:44,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12079 conditions, 1802 events. 928/1802 cut-off events. For 250501/250501 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11390 event pairs, 206 based on Foata normal form. 2/1804 useless extension candidates. Maximal degree in co-relation 11889. Up to 1313 conditions per place. [2024-06-27 20:46:44,575 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 92 changer transitions 0/335 dead transitions. [2024-06-27 20:46:44,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 335 transitions, 4178 flow [2024-06-27 20:46:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:46:44,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:46:44,576 INFO L175 Difference]: Start difference. First operand has 440 places, 316 transitions, 3394 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:46:44,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 335 transitions, 4178 flow [2024-06-27 20:46:45,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 335 transitions, 3946 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 20:46:45,520 INFO L231 Difference]: Finished difference. Result has 441 places, 317 transitions, 3420 flow [2024-06-27 20:46:45,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3420, PETRI_PLACES=441, PETRI_TRANSITIONS=317} [2024-06-27 20:46:45,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 20:46:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 317 transitions, 3420 flow [2024-06-27 20:46:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:45,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:45,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 20:46:45,521 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:45,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1928625227, now seen corresponding path program 33 times [2024-06-27 20:46:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:45,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661095518] [2024-06-27 20:46:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:46,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661095518] [2024-06-27 20:46:46,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661095518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:46,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:46,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:46,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684849586] [2024-06-27 20:46:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:46,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:46,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 317 transitions, 3420 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:46,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:46,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:47,422 INFO L124 PetriNetUnfolderBase]: 925/1797 cut-off events. [2024-06-27 20:46:47,422 INFO L125 PetriNetUnfolderBase]: For 231437/231437 co-relation queries the response was YES. [2024-06-27 20:46:47,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11663 conditions, 1797 events. 925/1797 cut-off events. For 231437/231437 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11383 event pairs, 231 based on Foata normal form. 2/1799 useless extension candidates. Maximal degree in co-relation 11473. Up to 1432 conditions per place. [2024-06-27 20:46:47,450 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 76 changer transitions 0/336 dead transitions. [2024-06-27 20:46:47,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 336 transitions, 4214 flow [2024-06-27 20:46:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:46:47,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:46:47,451 INFO L175 Difference]: Start difference. First operand has 441 places, 317 transitions, 3420 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:46:47,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 336 transitions, 4214 flow [2024-06-27 20:46:48,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 336 transitions, 3966 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:48,366 INFO L231 Difference]: Finished difference. Result has 441 places, 318 transitions, 3398 flow [2024-06-27 20:46:48,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3398, PETRI_PLACES=441, PETRI_TRANSITIONS=318} [2024-06-27 20:46:48,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 20:46:48,367 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 318 transitions, 3398 flow [2024-06-27 20:46:48,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:48,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:48,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:48,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 20:46:48,367 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:48,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1928630807, now seen corresponding path program 34 times [2024-06-27 20:46:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803207468] [2024-06-27 20:46:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803207468] [2024-06-27 20:46:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803207468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138984700] [2024-06-27 20:46:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:49,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:49,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:49,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:49,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 318 transitions, 3398 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:49,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:49,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:49,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:50,290 INFO L124 PetriNetUnfolderBase]: 929/1805 cut-off events. [2024-06-27 20:46:50,291 INFO L125 PetriNetUnfolderBase]: For 231668/231668 co-relation queries the response was YES. [2024-06-27 20:46:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11642 conditions, 1805 events. 929/1805 cut-off events. For 231668/231668 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11442 event pairs, 229 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 11453. Up to 1412 conditions per place. [2024-06-27 20:46:50,328 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 257 selfloop transitions, 78 changer transitions 0/337 dead transitions. [2024-06-27 20:46:50,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 337 transitions, 4192 flow [2024-06-27 20:46:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:46:50,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:46:50,329 INFO L175 Difference]: Start difference. First operand has 441 places, 318 transitions, 3398 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:46:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 337 transitions, 4192 flow [2024-06-27 20:46:51,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 337 transitions, 3978 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 20:46:51,339 INFO L231 Difference]: Finished difference. Result has 443 places, 319 transitions, 3416 flow [2024-06-27 20:46:51,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3416, PETRI_PLACES=443, PETRI_TRANSITIONS=319} [2024-06-27 20:46:51,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-27 20:46:51,339 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 319 transitions, 3416 flow [2024-06-27 20:46:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:51,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:51,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:51,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 20:46:51,340 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:51,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1928774957, now seen corresponding path program 35 times [2024-06-27 20:46:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546125674] [2024-06-27 20:46:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:52,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:52,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546125674] [2024-06-27 20:46:52,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546125674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:52,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:52,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:52,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144359961] [2024-06-27 20:46:52,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:52,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:52,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:52,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 319 transitions, 3416 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:52,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:52,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:52,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:53,231 INFO L124 PetriNetUnfolderBase]: 933/1813 cut-off events. [2024-06-27 20:46:53,231 INFO L125 PetriNetUnfolderBase]: For 231672/231672 co-relation queries the response was YES. [2024-06-27 20:46:53,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 1813 events. 933/1813 cut-off events. For 231672/231672 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11515 event pairs, 227 based on Foata normal form. 2/1815 useless extension candidates. Maximal degree in co-relation 11497. Up to 1376 conditions per place. [2024-06-27 20:46:53,256 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 80 changer transitions 0/338 dead transitions. [2024-06-27 20:46:53,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 338 transitions, 4208 flow [2024-06-27 20:46:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:46:53,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:46:53,257 INFO L175 Difference]: Start difference. First operand has 443 places, 319 transitions, 3416 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:46:53,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 338 transitions, 4208 flow [2024-06-27 20:46:54,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 338 transitions, 3986 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 20:46:54,284 INFO L231 Difference]: Finished difference. Result has 444 places, 320 transitions, 3430 flow [2024-06-27 20:46:54,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3430, PETRI_PLACES=444, PETRI_TRANSITIONS=320} [2024-06-27 20:46:54,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 20:46:54,285 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 320 transitions, 3430 flow [2024-06-27 20:46:54,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:54,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:54,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:54,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 20:46:54,286 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:54,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1932349877, now seen corresponding path program 36 times [2024-06-27 20:46:54,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821667677] [2024-06-27 20:46:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:55,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821667677] [2024-06-27 20:46:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821667677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755060815] [2024-06-27 20:46:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:55,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:55,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 320 transitions, 3430 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:55,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:55,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:55,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:56,058 INFO L124 PetriNetUnfolderBase]: 937/1821 cut-off events. [2024-06-27 20:46:56,058 INFO L125 PetriNetUnfolderBase]: For 231819/231819 co-relation queries the response was YES. [2024-06-27 20:46:56,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 1821 events. 937/1821 cut-off events. For 231819/231819 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11578 event pairs, 235 based on Foata normal form. 2/1823 useless extension candidates. Maximal degree in co-relation 11537. Up to 1188 conditions per place. [2024-06-27 20:46:56,082 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 94 changer transitions 0/339 dead transitions. [2024-06-27 20:46:56,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 339 transitions, 4220 flow [2024-06-27 20:46:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:46:56,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:46:56,083 INFO L175 Difference]: Start difference. First operand has 444 places, 320 transitions, 3430 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:46:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 339 transitions, 4220 flow [2024-06-27 20:46:57,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 339 transitions, 3994 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 20:46:57,006 INFO L231 Difference]: Finished difference. Result has 445 places, 321 transitions, 3468 flow [2024-06-27 20:46:57,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3468, PETRI_PLACES=445, PETRI_TRANSITIONS=321} [2024-06-27 20:46:57,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:46:57,007 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 321 transitions, 3468 flow [2024-06-27 20:46:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:57,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:57,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:57,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 20:46:57,008 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:57,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1423863981, now seen corresponding path program 37 times [2024-06-27 20:46:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761376269] [2024-06-27 20:46:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:57,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:58,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:58,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761376269] [2024-06-27 20:46:58,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761376269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:58,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:58,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:46:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873743955] [2024-06-27 20:46:58,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:58,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:46:58,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:46:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:46:58,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:46:58,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 321 transitions, 3468 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:58,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:58,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:46:58,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:58,719 INFO L124 PetriNetUnfolderBase]: 941/1829 cut-off events. [2024-06-27 20:46:58,719 INFO L125 PetriNetUnfolderBase]: For 231876/231876 co-relation queries the response was YES. [2024-06-27 20:46:58,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11815 conditions, 1829 events. 941/1829 cut-off events. For 231876/231876 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11664 event pairs, 196 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 11625. Up to 1236 conditions per place. [2024-06-27 20:46:58,744 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 200 selfloop transitions, 137 changer transitions 0/339 dead transitions. [2024-06-27 20:46:58,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 339 transitions, 4270 flow [2024-06-27 20:46:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:46:58,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:46:58,745 INFO L175 Difference]: Start difference. First operand has 445 places, 321 transitions, 3468 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:46:58,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 339 transitions, 4270 flow [2024-06-27 20:46:59,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 339 transitions, 4016 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-27 20:46:59,818 INFO L231 Difference]: Finished difference. Result has 445 places, 322 transitions, 3562 flow [2024-06-27 20:46:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3562, PETRI_PLACES=445, PETRI_TRANSITIONS=322} [2024-06-27 20:46:59,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:46:59,818 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 322 transitions, 3562 flow [2024-06-27 20:46:59,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:59,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:59,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:59,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 20:46:59,819 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:46:59,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1423869561, now seen corresponding path program 38 times [2024-06-27 20:46:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:59,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457471706] [2024-06-27 20:46:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457471706] [2024-06-27 20:47:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457471706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743478197] [2024-06-27 20:47:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:00,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:00,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 322 transitions, 3562 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:00,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:00,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:00,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:01,477 INFO L124 PetriNetUnfolderBase]: 981/1910 cut-off events. [2024-06-27 20:47:01,477 INFO L125 PetriNetUnfolderBase]: For 335121/335121 co-relation queries the response was YES. [2024-06-27 20:47:01,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13958 conditions, 1910 events. 981/1910 cut-off events. For 335121/335121 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 12201 event pairs, 216 based on Foata normal form. 2/1912 useless extension candidates. Maximal degree in co-relation 13769. Up to 1220 conditions per place. [2024-06-27 20:47:01,503 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 139 changer transitions 0/346 dead transitions. [2024-06-27 20:47:01,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 346 transitions, 4754 flow [2024-06-27 20:47:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:47:01,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:47:01,504 INFO L175 Difference]: Start difference. First operand has 445 places, 322 transitions, 3562 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:47:01,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 346 transitions, 4754 flow [2024-06-27 20:47:02,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 346 transitions, 4416 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:02,717 INFO L231 Difference]: Finished difference. Result has 447 places, 324 transitions, 3648 flow [2024-06-27 20:47:02,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3648, PETRI_PLACES=447, PETRI_TRANSITIONS=324} [2024-06-27 20:47:02,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-27 20:47:02,717 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 324 transitions, 3648 flow [2024-06-27 20:47:02,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:02,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:02,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 20:47:02,717 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:02,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1416512331, now seen corresponding path program 39 times [2024-06-27 20:47:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539599278] [2024-06-27 20:47:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539599278] [2024-06-27 20:47:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539599278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:03,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:03,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:03,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943782976] [2024-06-27 20:47:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:03,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:03,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 324 transitions, 3648 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:03,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:03,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:03,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:04,345 INFO L124 PetriNetUnfolderBase]: 1001/1954 cut-off events. [2024-06-27 20:47:04,345 INFO L125 PetriNetUnfolderBase]: For 424994/424994 co-relation queries the response was YES. [2024-06-27 20:47:04,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14185 conditions, 1954 events. 1001/1954 cut-off events. For 424994/424994 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 12555 event pairs, 222 based on Foata normal form. 12/1966 useless extension candidates. Maximal degree in co-relation 13995. Up to 1318 conditions per place. [2024-06-27 20:47:04,372 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 130 changer transitions 7/346 dead transitions. [2024-06-27 20:47:04,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 346 transitions, 4512 flow [2024-06-27 20:47:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:47:04,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:47:04,373 INFO L175 Difference]: Start difference. First operand has 447 places, 324 transitions, 3648 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:47:04,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 346 transitions, 4512 flow [2024-06-27 20:47:05,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 346 transitions, 4147 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-27 20:47:05,610 INFO L231 Difference]: Finished difference. Result has 448 places, 322 transitions, 3602 flow [2024-06-27 20:47:05,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3602, PETRI_PLACES=448, PETRI_TRANSITIONS=322} [2024-06-27 20:47:05,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-27 20:47:05,611 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 322 transitions, 3602 flow [2024-06-27 20:47:05,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:05,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:05,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 20:47:05,611 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:05,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash -854375017, now seen corresponding path program 4 times [2024-06-27 20:47:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:05,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095961122] [2024-06-27 20:47:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:06,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095961122] [2024-06-27 20:47:06,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095961122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:06,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:06,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344998932] [2024-06-27 20:47:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:06,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:06,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:06,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:06,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 322 transitions, 3602 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:06,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:06,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:06,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:07,237 INFO L124 PetriNetUnfolderBase]: 1018/1992 cut-off events. [2024-06-27 20:47:07,237 INFO L125 PetriNetUnfolderBase]: For 477449/477449 co-relation queries the response was YES. [2024-06-27 20:47:07,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15518 conditions, 1992 events. 1018/1992 cut-off events. For 477449/477449 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12838 event pairs, 440 based on Foata normal form. 8/2000 useless extension candidates. Maximal degree in co-relation 15329. Up to 1740 conditions per place. [2024-06-27 20:47:07,268 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 313 selfloop transitions, 19 changer transitions 9/343 dead transitions. [2024-06-27 20:47:07,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 343 transitions, 4666 flow [2024-06-27 20:47:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 20:47:07,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 20:47:07,269 INFO L175 Difference]: Start difference. First operand has 448 places, 322 transitions, 3602 flow. Second operand 11 states and 115 transitions. [2024-06-27 20:47:07,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 343 transitions, 4666 flow [2024-06-27 20:47:08,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 343 transitions, 4346 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 20:47:08,624 INFO L231 Difference]: Finished difference. Result has 448 places, 318 transitions, 3296 flow [2024-06-27 20:47:08,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3296, PETRI_PLACES=448, PETRI_TRANSITIONS=318} [2024-06-27 20:47:08,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-27 20:47:08,625 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 318 transitions, 3296 flow [2024-06-27 20:47:08,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:08,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:08,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:08,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 20:47:08,625 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:08,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:08,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1680037609, now seen corresponding path program 5 times [2024-06-27 20:47:08,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:08,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134976072] [2024-06-27 20:47:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134976072] [2024-06-27 20:47:09,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134976072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:09,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263154187] [2024-06-27 20:47:09,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:09,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:09,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 318 transitions, 3296 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:09,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:09,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:09,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:10,318 INFO L124 PetriNetUnfolderBase]: 1006/1972 cut-off events. [2024-06-27 20:47:10,318 INFO L125 PetriNetUnfolderBase]: For 482775/482775 co-relation queries the response was YES. [2024-06-27 20:47:10,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15114 conditions, 1972 events. 1006/1972 cut-off events. For 482775/482775 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12684 event pairs, 438 based on Foata normal form. 8/1980 useless extension candidates. Maximal degree in co-relation 14925. Up to 1722 conditions per place. [2024-06-27 20:47:10,340 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 311 selfloop transitions, 18 changer transitions 10/341 dead transitions. [2024-06-27 20:47:10,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 341 transitions, 4362 flow [2024-06-27 20:47:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:47:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:47:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-27 20:47:10,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-27 20:47:10,341 INFO L175 Difference]: Start difference. First operand has 448 places, 318 transitions, 3296 flow. Second operand 12 states and 122 transitions. [2024-06-27 20:47:10,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 341 transitions, 4362 flow [2024-06-27 20:47:11,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 341 transitions, 4317 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:47:11,646 INFO L231 Difference]: Finished difference. Result has 446 places, 315 transitions, 3278 flow [2024-06-27 20:47:11,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3257, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3278, PETRI_PLACES=446, PETRI_TRANSITIONS=315} [2024-06-27 20:47:11,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 416 predicate places. [2024-06-27 20:47:11,646 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 315 transitions, 3278 flow [2024-06-27 20:47:11,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:11,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:11,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 20:47:11,647 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:11,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1159146247, now seen corresponding path program 6 times [2024-06-27 20:47:11,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:11,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521583085] [2024-06-27 20:47:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:12,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521583085] [2024-06-27 20:47:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521583085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:12,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:12,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310023556] [2024-06-27 20:47:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:12,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:12,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:12,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:12,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 315 transitions, 3278 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:12,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:12,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:12,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:13,201 INFO L124 PetriNetUnfolderBase]: 968/1898 cut-off events. [2024-06-27 20:47:13,201 INFO L125 PetriNetUnfolderBase]: For 401431/401431 co-relation queries the response was YES. [2024-06-27 20:47:13,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13126 conditions, 1898 events. 968/1898 cut-off events. For 401431/401431 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12160 event pairs, 430 based on Foata normal form. 12/1910 useless extension candidates. Maximal degree in co-relation 12939. Up to 1791 conditions per place. [2024-06-27 20:47:13,237 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 18 changer transitions 11/332 dead transitions. [2024-06-27 20:47:13,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 332 transitions, 4018 flow [2024-06-27 20:47:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:47:13,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 20:47:13,238 INFO L175 Difference]: Start difference. First operand has 446 places, 315 transitions, 3278 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:47:13,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 332 transitions, 4018 flow [2024-06-27 20:47:14,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 332 transitions, 3937 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-27 20:47:14,449 INFO L231 Difference]: Finished difference. Result has 442 places, 308 transitions, 3182 flow [2024-06-27 20:47:14,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3182, PETRI_PLACES=442, PETRI_TRANSITIONS=308} [2024-06-27 20:47:14,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-27 20:47:14,450 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 308 transitions, 3182 flow [2024-06-27 20:47:14,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:14,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:14,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:14,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 20:47:14,450 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:14,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash -742685003, now seen corresponding path program 40 times [2024-06-27 20:47:14,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:14,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741394672] [2024-06-27 20:47:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:14,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:15,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741394672] [2024-06-27 20:47:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741394672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197212802] [2024-06-27 20:47:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:15,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:15,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:15,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 308 transitions, 3182 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:15,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:15,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:15,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:16,347 INFO L124 PetriNetUnfolderBase]: 943/1847 cut-off events. [2024-06-27 20:47:16,347 INFO L125 PetriNetUnfolderBase]: For 307712/307712 co-relation queries the response was YES. [2024-06-27 20:47:16,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12874 conditions, 1847 events. 943/1847 cut-off events. For 307712/307712 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11748 event pairs, 257 based on Foata normal form. 2/1849 useless extension candidates. Maximal degree in co-relation 12689. Up to 1277 conditions per place. [2024-06-27 20:47:16,372 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 108 changer transitions 0/326 dead transitions. [2024-06-27 20:47:16,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 326 transitions, 3956 flow [2024-06-27 20:47:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:47:16,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:47:16,373 INFO L175 Difference]: Start difference. First operand has 442 places, 308 transitions, 3182 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:47:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 326 transitions, 3956 flow [2024-06-27 20:47:17,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 326 transitions, 3888 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-27 20:47:17,536 INFO L231 Difference]: Finished difference. Result has 436 places, 309 transitions, 3402 flow [2024-06-27 20:47:17,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3402, PETRI_PLACES=436, PETRI_TRANSITIONS=309} [2024-06-27 20:47:17,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-27 20:47:17,537 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 309 transitions, 3402 flow [2024-06-27 20:47:17,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:17,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:17,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:17,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 20:47:17,537 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:17,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1362672431, now seen corresponding path program 41 times [2024-06-27 20:47:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:17,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22136732] [2024-06-27 20:47:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:17,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:18,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22136732] [2024-06-27 20:47:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22136732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:18,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963998452] [2024-06-27 20:47:18,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:18,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:18,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:18,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 309 transitions, 3402 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:18,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:18,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:18,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:19,334 INFO L124 PetriNetUnfolderBase]: 947/1856 cut-off events. [2024-06-27 20:47:19,334 INFO L125 PetriNetUnfolderBase]: For 310294/310294 co-relation queries the response was YES. [2024-06-27 20:47:19,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13174 conditions, 1856 events. 947/1856 cut-off events. For 310294/310294 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11831 event pairs, 257 based on Foata normal form. 2/1858 useless extension candidates. Maximal degree in co-relation 12991. Up to 1271 conditions per place. [2024-06-27 20:47:19,359 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 109 changer transitions 0/327 dead transitions. [2024-06-27 20:47:19,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 327 transitions, 4176 flow [2024-06-27 20:47:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:47:19,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:47:19,360 INFO L175 Difference]: Start difference. First operand has 436 places, 309 transitions, 3402 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:47:19,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 327 transitions, 4176 flow [2024-06-27 20:47:20,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 327 transitions, 3898 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:20,791 INFO L231 Difference]: Finished difference. Result has 438 places, 310 transitions, 3416 flow [2024-06-27 20:47:20,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3416, PETRI_PLACES=438, PETRI_TRANSITIONS=310} [2024-06-27 20:47:20,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-27 20:47:20,792 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 310 transitions, 3416 flow [2024-06-27 20:47:20,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:20,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:20,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:20,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 20:47:20,792 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:20,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash -840471711, now seen corresponding path program 42 times [2024-06-27 20:47:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77919915] [2024-06-27 20:47:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:21,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:21,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77919915] [2024-06-27 20:47:21,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77919915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:21,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:21,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:21,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748691926] [2024-06-27 20:47:21,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:21,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:22,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:22,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 310 transitions, 3416 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:22,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:22,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:22,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:22,626 INFO L124 PetriNetUnfolderBase]: 951/1864 cut-off events. [2024-06-27 20:47:22,626 INFO L125 PetriNetUnfolderBase]: For 315496/315496 co-relation queries the response was YES. [2024-06-27 20:47:22,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 1864 events. 951/1864 cut-off events. For 315496/315496 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11902 event pairs, 257 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 13065. Up to 1257 conditions per place. [2024-06-27 20:47:22,651 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 110 changer transitions 0/328 dead transitions. [2024-06-27 20:47:22,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 328 transitions, 4190 flow [2024-06-27 20:47:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:47:22,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 20:47:22,652 INFO L175 Difference]: Start difference. First operand has 438 places, 310 transitions, 3416 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:47:22,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 328 transitions, 4190 flow [2024-06-27 20:47:23,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 328 transitions, 3908 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:23,851 INFO L231 Difference]: Finished difference. Result has 440 places, 311 transitions, 3430 flow [2024-06-27 20:47:23,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3134, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3430, PETRI_PLACES=440, PETRI_TRANSITIONS=311} [2024-06-27 20:47:23,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 20:47:23,851 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 311 transitions, 3430 flow [2024-06-27 20:47:23,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:23,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:23,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:23,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 20:47:23,852 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:23,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash 156486053, now seen corresponding path program 43 times [2024-06-27 20:47:23,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:23,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631003957] [2024-06-27 20:47:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:23,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631003957] [2024-06-27 20:47:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631003957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:24,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:24,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:24,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480310925] [2024-06-27 20:47:24,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:24,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:24,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:25,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:25,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 311 transitions, 3430 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:25,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:25,755 INFO L124 PetriNetUnfolderBase]: 955/1872 cut-off events. [2024-06-27 20:47:25,755 INFO L125 PetriNetUnfolderBase]: For 320848/320848 co-relation queries the response was YES. [2024-06-27 20:47:25,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13326 conditions, 1872 events. 955/1872 cut-off events. For 320848/320848 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11978 event pairs, 263 based on Foata normal form. 2/1874 useless extension candidates. Maximal degree in co-relation 13141. Up to 1301 conditions per place. [2024-06-27 20:47:25,777 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 227 selfloop transitions, 100 changer transitions 0/329 dead transitions. [2024-06-27 20:47:25,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 329 transitions, 4216 flow [2024-06-27 20:47:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:47:25,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 20:47:25,778 INFO L175 Difference]: Start difference. First operand has 440 places, 311 transitions, 3430 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:47:25,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 329 transitions, 4216 flow [2024-06-27 20:47:27,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 329 transitions, 3930 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:27,187 INFO L231 Difference]: Finished difference. Result has 442 places, 312 transitions, 3422 flow [2024-06-27 20:47:27,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3144, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3422, PETRI_PLACES=442, PETRI_TRANSITIONS=312} [2024-06-27 20:47:27,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-27 20:47:27,188 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 312 transitions, 3422 flow [2024-06-27 20:47:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:27,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:27,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:27,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 20:47:27,188 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:27,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1107135111, now seen corresponding path program 7 times [2024-06-27 20:47:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044332378] [2024-06-27 20:47:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:28,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:28,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044332378] [2024-06-27 20:47:28,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044332378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:28,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761925338] [2024-06-27 20:47:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:28,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:28,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:28,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 312 transitions, 3422 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:28,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:28,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:28,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:28,695 INFO L124 PetriNetUnfolderBase]: 982/1933 cut-off events. [2024-06-27 20:47:28,695 INFO L125 PetriNetUnfolderBase]: For 426850/426850 co-relation queries the response was YES. [2024-06-27 20:47:28,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14209 conditions, 1933 events. 982/1933 cut-off events. For 426850/426850 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12395 event pairs, 226 based on Foata normal form. 8/1941 useless extension candidates. Maximal degree in co-relation 14023. Up to 1277 conditions per place. [2024-06-27 20:47:28,722 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 121 changer transitions 8/335 dead transitions. [2024-06-27 20:47:28,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 335 transitions, 4458 flow [2024-06-27 20:47:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:47:28,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:47:28,723 INFO L175 Difference]: Start difference. First operand has 442 places, 312 transitions, 3422 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:47:28,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 335 transitions, 4458 flow [2024-06-27 20:47:30,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 335 transitions, 4190 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:30,311 INFO L231 Difference]: Finished difference. Result has 444 places, 309 transitions, 3381 flow [2024-06-27 20:47:30,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3381, PETRI_PLACES=444, PETRI_TRANSITIONS=309} [2024-06-27 20:47:30,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 20:47:30,312 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 309 transitions, 3381 flow [2024-06-27 20:47:30,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:30,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:30,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 20:47:30,312 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:30,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1355027719, now seen corresponding path program 8 times [2024-06-27 20:47:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:30,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667980122] [2024-06-27 20:47:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667980122] [2024-06-27 20:47:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667980122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:31,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999254600] [2024-06-27 20:47:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:31,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:31,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:31,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 309 transitions, 3381 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:31,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:31,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:31,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:32,462 INFO L124 PetriNetUnfolderBase]: 965/1901 cut-off events. [2024-06-27 20:47:32,462 INFO L125 PetriNetUnfolderBase]: For 415435/415435 co-relation queries the response was YES. [2024-06-27 20:47:32,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13477 conditions, 1901 events. 965/1901 cut-off events. For 415435/415435 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12170 event pairs, 441 based on Foata normal form. 10/1911 useless extension candidates. Maximal degree in co-relation 13290. Up to 1811 conditions per place. [2024-06-27 20:47:32,489 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 15 changer transitions 9/327 dead transitions. [2024-06-27 20:47:32,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 327 transitions, 4113 flow [2024-06-27 20:47:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:47:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:47:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-27 20:47:32,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:47:32,490 INFO L175 Difference]: Start difference. First operand has 444 places, 309 transitions, 3381 flow. Second operand 12 states and 114 transitions. [2024-06-27 20:47:32,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 327 transitions, 4113 flow [2024-06-27 20:47:33,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 327 transitions, 3867 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:47:33,625 INFO L231 Difference]: Finished difference. Result has 442 places, 306 transitions, 3147 flow [2024-06-27 20:47:33,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3135, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3147, PETRI_PLACES=442, PETRI_TRANSITIONS=306} [2024-06-27 20:47:33,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-27 20:47:33,626 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 306 transitions, 3147 flow [2024-06-27 20:47:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:33,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:33,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:33,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 20:47:33,626 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:33,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 44 times [2024-06-27 20:47:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020413863] [2024-06-27 20:47:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:33,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:34,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:34,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020413863] [2024-06-27 20:47:34,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020413863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:34,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:34,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106737293] [2024-06-27 20:47:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:34,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:34,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:34,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:34,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 306 transitions, 3147 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:34,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:34,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:34,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:35,302 INFO L124 PetriNetUnfolderBase]: 959/1895 cut-off events. [2024-06-27 20:47:35,302 INFO L125 PetriNetUnfolderBase]: For 422300/422300 co-relation queries the response was YES. [2024-06-27 20:47:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13247 conditions, 1895 events. 959/1895 cut-off events. For 422300/422300 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12138 event pairs, 246 based on Foata normal form. 12/1907 useless extension candidates. Maximal degree in co-relation 13062. Up to 1294 conditions per place. [2024-06-27 20:47:35,329 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 105 changer transitions 7/328 dead transitions. [2024-06-27 20:47:35,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 328 transitions, 3977 flow [2024-06-27 20:47:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:47:35,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:47:35,330 INFO L175 Difference]: Start difference. First operand has 442 places, 306 transitions, 3147 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:47:35,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 328 transitions, 3977 flow [2024-06-27 20:47:36,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 328 transitions, 3941 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:47:36,634 INFO L231 Difference]: Finished difference. Result has 439 places, 304 transitions, 3382 flow [2024-06-27 20:47:36,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3382, PETRI_PLACES=439, PETRI_TRANSITIONS=304} [2024-06-27 20:47:36,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-27 20:47:36,635 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 304 transitions, 3382 flow [2024-06-27 20:47:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:36,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:36,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:36,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 20:47:36,635 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:36,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2141734837, now seen corresponding path program 9 times [2024-06-27 20:47:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:36,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244274775] [2024-06-27 20:47:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:36,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:37,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244274775] [2024-06-27 20:47:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244274775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:37,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262401166] [2024-06-27 20:47:37,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:37,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:37,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 304 transitions, 3382 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:37,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:37,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:37,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:38,157 INFO L124 PetriNetUnfolderBase]: 969/1922 cut-off events. [2024-06-27 20:47:38,157 INFO L125 PetriNetUnfolderBase]: For 446771/446771 co-relation queries the response was YES. [2024-06-27 20:47:38,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14719 conditions, 1922 events. 969/1922 cut-off events. For 446771/446771 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12325 event pairs, 254 based on Foata normal form. 8/1930 useless extension candidates. Maximal degree in co-relation 14535. Up to 1276 conditions per place. [2024-06-27 20:47:38,183 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 102 changer transitions 8/328 dead transitions. [2024-06-27 20:47:38,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 328 transitions, 4476 flow [2024-06-27 20:47:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:47:38,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:47:38,184 INFO L175 Difference]: Start difference. First operand has 439 places, 304 transitions, 3382 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:47:38,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 328 transitions, 4476 flow [2024-06-27 20:47:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 328 transitions, 4189 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-27 20:47:39,752 INFO L231 Difference]: Finished difference. Result has 440 places, 301 transitions, 3283 flow [2024-06-27 20:47:39,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3095, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3283, PETRI_PLACES=440, PETRI_TRANSITIONS=301} [2024-06-27 20:47:39,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 20:47:39,753 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 301 transitions, 3283 flow [2024-06-27 20:47:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:39,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:39,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 20:47:39,753 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:39,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash -783649273, now seen corresponding path program 45 times [2024-06-27 20:47:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269548584] [2024-06-27 20:47:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:40,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:40,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269548584] [2024-06-27 20:47:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269548584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:40,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:40,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:40,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523614089] [2024-06-27 20:47:40,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:40,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:40,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:40,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:40,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:40,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 301 transitions, 3283 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:40,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:40,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:41,599 INFO L124 PetriNetUnfolderBase]: 954/1889 cut-off events. [2024-06-27 20:47:41,599 INFO L125 PetriNetUnfolderBase]: For 403954/403954 co-relation queries the response was YES. [2024-06-27 20:47:41,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14604 conditions, 1889 events. 954/1889 cut-off events. For 403954/403954 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12077 event pairs, 256 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 14419. Up to 1338 conditions per place. [2024-06-27 20:47:41,623 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 210 selfloop transitions, 106 changer transitions 0/318 dead transitions. [2024-06-27 20:47:41,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 318 transitions, 4045 flow [2024-06-27 20:47:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:47:41,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:47:41,625 INFO L175 Difference]: Start difference. First operand has 440 places, 301 transitions, 3283 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:47:41,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 318 transitions, 4045 flow [2024-06-27 20:47:43,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 318 transitions, 3838 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:47:43,197 INFO L231 Difference]: Finished difference. Result has 437 places, 302 transitions, 3370 flow [2024-06-27 20:47:43,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3370, PETRI_PLACES=437, PETRI_TRANSITIONS=302} [2024-06-27 20:47:43,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-27 20:47:43,198 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 302 transitions, 3370 flow [2024-06-27 20:47:43,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:43,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:43,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:43,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 20:47:43,198 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:43,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash -584347483, now seen corresponding path program 46 times [2024-06-27 20:47:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857121723] [2024-06-27 20:47:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857121723] [2024-06-27 20:47:44,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857121723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:44,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:44,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:44,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043273269] [2024-06-27 20:47:44,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:44,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:44,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 302 transitions, 3370 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:44,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:44,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:44,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:44,909 INFO L124 PetriNetUnfolderBase]: 951/1884 cut-off events. [2024-06-27 20:47:44,909 INFO L125 PetriNetUnfolderBase]: For 382342/382342 co-relation queries the response was YES. [2024-06-27 20:47:44,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14198 conditions, 1884 events. 951/1884 cut-off events. For 382342/382342 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12009 event pairs, 251 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 14015. Up to 1333 conditions per place. [2024-06-27 20:47:44,935 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 103 changer transitions 0/320 dead transitions. [2024-06-27 20:47:44,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 320 transitions, 4144 flow [2024-06-27 20:47:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:47:44,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:47:44,949 INFO L175 Difference]: Start difference. First operand has 437 places, 302 transitions, 3370 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:47:44,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 320 transitions, 4144 flow [2024-06-27 20:47:46,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 320 transitions, 3860 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:46,794 INFO L231 Difference]: Finished difference. Result has 439 places, 303 transitions, 3376 flow [2024-06-27 20:47:46,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3376, PETRI_PLACES=439, PETRI_TRANSITIONS=303} [2024-06-27 20:47:46,795 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-27 20:47:46,795 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 303 transitions, 3376 flow [2024-06-27 20:47:46,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:46,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:46,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:46,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 20:47:46,795 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:46,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -584353063, now seen corresponding path program 47 times [2024-06-27 20:47:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:46,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117063421] [2024-06-27 20:47:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:46,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117063421] [2024-06-27 20:47:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117063421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:47,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:47,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:47,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122833905] [2024-06-27 20:47:47,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:47,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:47,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:47,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:47,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 303 transitions, 3376 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:47,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:47,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:47,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:48,470 INFO L124 PetriNetUnfolderBase]: 955/1892 cut-off events. [2024-06-27 20:47:48,470 INFO L125 PetriNetUnfolderBase]: For 388541/388541 co-relation queries the response was YES. [2024-06-27 20:47:48,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14271 conditions, 1892 events. 955/1892 cut-off events. For 388541/388541 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12107 event pairs, 251 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 14087. Up to 1321 conditions per place. [2024-06-27 20:47:48,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 105 changer transitions 0/321 dead transitions. [2024-06-27 20:47:48,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 321 transitions, 4150 flow [2024-06-27 20:47:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:47:48,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:47:48,498 INFO L175 Difference]: Start difference. First operand has 439 places, 303 transitions, 3376 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:47:48,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 321 transitions, 4150 flow [2024-06-27 20:47:50,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 321 transitions, 3870 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:50,133 INFO L231 Difference]: Finished difference. Result has 441 places, 304 transitions, 3392 flow [2024-06-27 20:47:50,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3392, PETRI_PLACES=441, PETRI_TRANSITIONS=304} [2024-06-27 20:47:50,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 20:47:50,134 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 304 transitions, 3392 flow [2024-06-27 20:47:50,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:50,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:50,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:50,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 20:47:50,134 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:50,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 48 times [2024-06-27 20:47:50,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:50,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947404762] [2024-06-27 20:47:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:50,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947404762] [2024-06-27 20:47:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947404762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:51,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359703615] [2024-06-27 20:47:51,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:51,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:51,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:51,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 304 transitions, 3392 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:51,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:51,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:51,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:51,948 INFO L124 PetriNetUnfolderBase]: 959/1900 cut-off events. [2024-06-27 20:47:51,948 INFO L125 PetriNetUnfolderBase]: For 394640/394640 co-relation queries the response was YES. [2024-06-27 20:47:51,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14358 conditions, 1900 events. 959/1900 cut-off events. For 394640/394640 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12173 event pairs, 255 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 14173. Up to 1335 conditions per place. [2024-06-27 20:47:51,976 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 212 selfloop transitions, 107 changer transitions 0/321 dead transitions. [2024-06-27 20:47:51,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 321 transitions, 4162 flow [2024-06-27 20:47:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:47:51,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:47:51,977 INFO L175 Difference]: Start difference. First operand has 441 places, 304 transitions, 3392 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:47:51,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 321 transitions, 4162 flow [2024-06-27 20:47:53,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 321 transitions, 3876 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:53,603 INFO L231 Difference]: Finished difference. Result has 443 places, 305 transitions, 3408 flow [2024-06-27 20:47:53,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=443, PETRI_TRANSITIONS=305} [2024-06-27 20:47:53,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-27 20:47:53,603 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 305 transitions, 3408 flow [2024-06-27 20:47:53,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:53,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:53,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:53,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 20:47:53,604 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:53,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -783799003, now seen corresponding path program 49 times [2024-06-27 20:47:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:53,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031082011] [2024-06-27 20:47:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:54,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031082011] [2024-06-27 20:47:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031082011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727020413] [2024-06-27 20:47:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:54,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:54,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:54,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 305 transitions, 3408 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:54,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:54,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:54,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:55,292 INFO L124 PetriNetUnfolderBase]: 963/1908 cut-off events. [2024-06-27 20:47:55,292 INFO L125 PetriNetUnfolderBase]: For 401428/401428 co-relation queries the response was YES. [2024-06-27 20:47:55,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14441 conditions, 1908 events. 963/1908 cut-off events. For 401428/401428 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12277 event pairs, 251 based on Foata normal form. 2/1910 useless extension candidates. Maximal degree in co-relation 14255. Up to 1263 conditions per place. [2024-06-27 20:47:55,320 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 115 changer transitions 0/322 dead transitions. [2024-06-27 20:47:55,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 322 transitions, 4178 flow [2024-06-27 20:47:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:47:55,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:47:55,322 INFO L175 Difference]: Start difference. First operand has 443 places, 305 transitions, 3408 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:47:55,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 322 transitions, 4178 flow [2024-06-27 20:47:56,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 322 transitions, 3886 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 20:47:56,829 INFO L231 Difference]: Finished difference. Result has 445 places, 306 transitions, 3436 flow [2024-06-27 20:47:56,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3436, PETRI_PLACES=445, PETRI_TRANSITIONS=306} [2024-06-27 20:47:56,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 20:47:56,829 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 306 transitions, 3436 flow [2024-06-27 20:47:56,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:56,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:56,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:56,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 20:47:56,830 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:47:56,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash 355787843, now seen corresponding path program 50 times [2024-06-27 20:47:56,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:56,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087946411] [2024-06-27 20:47:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087946411] [2024-06-27 20:47:58,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087946411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:58,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:58,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:47:58,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694029560] [2024-06-27 20:47:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:58,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:47:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:47:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:47:58,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:47:58,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 306 transitions, 3436 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:58,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:58,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:47:58,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:58,688 INFO L124 PetriNetUnfolderBase]: 967/1916 cut-off events. [2024-06-27 20:47:58,688 INFO L125 PetriNetUnfolderBase]: For 407386/407386 co-relation queries the response was YES. [2024-06-27 20:47:58,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14554 conditions, 1916 events. 967/1916 cut-off events. For 407386/407386 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12280 event pairs, 289 based on Foata normal form. 2/1918 useless extension candidates. Maximal degree in co-relation 14367. Up to 1365 conditions per place. [2024-06-27 20:47:58,715 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 227 selfloop transitions, 95 changer transitions 0/324 dead transitions. [2024-06-27 20:47:58,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 324 transitions, 4226 flow [2024-06-27 20:47:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:47:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:47:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:47:58,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:47:58,716 INFO L175 Difference]: Start difference. First operand has 445 places, 306 transitions, 3436 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:47:58,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 324 transitions, 4226 flow [2024-06-27 20:48:00,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 324 transitions, 3916 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 20:48:00,335 INFO L231 Difference]: Finished difference. Result has 447 places, 307 transitions, 3408 flow [2024-06-27 20:48:00,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=447, PETRI_TRANSITIONS=307} [2024-06-27 20:48:00,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-27 20:48:00,336 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 307 transitions, 3408 flow [2024-06-27 20:48:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:00,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:00,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 20:48:00,337 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash 927549929, now seen corresponding path program 51 times [2024-06-27 20:48:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:00,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857604590] [2024-06-27 20:48:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857604590] [2024-06-27 20:48:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857604590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:01,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:01,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926011559] [2024-06-27 20:48:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:01,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:01,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:01,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:01,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:01,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 307 transitions, 3408 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:01,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:01,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:01,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:02,174 INFO L124 PetriNetUnfolderBase]: 971/1924 cut-off events. [2024-06-27 20:48:02,174 INFO L125 PetriNetUnfolderBase]: For 414137/414137 co-relation queries the response was YES. [2024-06-27 20:48:02,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14569 conditions, 1924 events. 971/1924 cut-off events. For 414137/414137 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12367 event pairs, 295 based on Foata normal form. 2/1926 useless extension candidates. Maximal degree in co-relation 14381. Up to 1157 conditions per place. [2024-06-27 20:48:02,202 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 113 changer transitions 0/325 dead transitions. [2024-06-27 20:48:02,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 325 transitions, 4456 flow [2024-06-27 20:48:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:48:02,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:48:02,203 INFO L175 Difference]: Start difference. First operand has 447 places, 307 transitions, 3408 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:48:02,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 325 transitions, 4456 flow [2024-06-27 20:48:03,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 325 transitions, 4184 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 20:48:03,688 INFO L231 Difference]: Finished difference. Result has 449 places, 308 transitions, 3454 flow [2024-06-27 20:48:03,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3454, PETRI_PLACES=449, PETRI_TRANSITIONS=308} [2024-06-27 20:48:03,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-27 20:48:03,689 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 308 transitions, 3454 flow [2024-06-27 20:48:03,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:03,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:03,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 20:48:03,689 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:03,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2127378823, now seen corresponding path program 52 times [2024-06-27 20:48:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:03,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459768071] [2024-06-27 20:48:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459768071] [2024-06-27 20:48:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459768071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:04,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:04,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985465610] [2024-06-27 20:48:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:04,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:04,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:04,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:04,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 308 transitions, 3454 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:04,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:04,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:04,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:05,454 INFO L124 PetriNetUnfolderBase]: 1011/2004 cut-off events. [2024-06-27 20:48:05,454 INFO L125 PetriNetUnfolderBase]: For 532302/532302 co-relation queries the response was YES. [2024-06-27 20:48:05,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16856 conditions, 2004 events. 1011/2004 cut-off events. For 532302/532302 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12965 event pairs, 311 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 16667. Up to 1365 conditions per place. [2024-06-27 20:48:05,480 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 97 changer transitions 0/332 dead transitions. [2024-06-27 20:48:05,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 332 transitions, 4668 flow [2024-06-27 20:48:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:48:05,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:48:05,481 INFO L175 Difference]: Start difference. First operand has 449 places, 308 transitions, 3454 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:48:05,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 332 transitions, 4668 flow [2024-06-27 20:48:07,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 332 transitions, 4319 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 20:48:07,234 INFO L231 Difference]: Finished difference. Result has 451 places, 310 transitions, 3485 flow [2024-06-27 20:48:07,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3485, PETRI_PLACES=451, PETRI_TRANSITIONS=310} [2024-06-27 20:48:07,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 421 predicate places. [2024-06-27 20:48:07,234 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 310 transitions, 3485 flow [2024-06-27 20:48:07,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:07,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:07,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:07,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 20:48:07,235 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:07,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2134736053, now seen corresponding path program 53 times [2024-06-27 20:48:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:07,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366881007] [2024-06-27 20:48:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:07,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:08,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366881007] [2024-06-27 20:48:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366881007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:08,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53600859] [2024-06-27 20:48:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:08,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:08,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 310 transitions, 3485 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:08,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:08,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:08,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:08,936 INFO L124 PetriNetUnfolderBase]: 995/1976 cut-off events. [2024-06-27 20:48:08,936 INFO L125 PetriNetUnfolderBase]: For 515465/515465 co-relation queries the response was YES. [2024-06-27 20:48:08,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14673 conditions, 1976 events. 995/1976 cut-off events. For 515465/515465 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12787 event pairs, 301 based on Foata normal form. 12/1988 useless extension candidates. Maximal degree in co-relation 14485. Up to 1383 conditions per place. [2024-06-27 20:48:08,958 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 94 changer transitions 7/331 dead transitions. [2024-06-27 20:48:08,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 331 transitions, 4247 flow [2024-06-27 20:48:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:48:08,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:48:08,959 INFO L175 Difference]: Start difference. First operand has 451 places, 310 transitions, 3485 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:48:08,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 331 transitions, 4247 flow [2024-06-27 20:48:10,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 331 transitions, 3988 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-27 20:48:10,649 INFO L231 Difference]: Finished difference. Result has 455 places, 307 transitions, 3397 flow [2024-06-27 20:48:10,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3397, PETRI_PLACES=455, PETRI_TRANSITIONS=307} [2024-06-27 20:48:10,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-27 20:48:10,650 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 307 transitions, 3397 flow [2024-06-27 20:48:10,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:10,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:10,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 20:48:10,650 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:10,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2135012759, now seen corresponding path program 10 times [2024-06-27 20:48:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:10,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954098016] [2024-06-27 20:48:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:10,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:11,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954098016] [2024-06-27 20:48:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954098016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:11,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:48:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928592888] [2024-06-27 20:48:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:48:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:48:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:48:11,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:11,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 307 transitions, 3397 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:11,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:11,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:12,138 INFO L124 PetriNetUnfolderBase]: 984/1963 cut-off events. [2024-06-27 20:48:12,138 INFO L125 PetriNetUnfolderBase]: For 497306/497306 co-relation queries the response was YES. [2024-06-27 20:48:12,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14712 conditions, 1963 events. 984/1963 cut-off events. For 497306/497306 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12718 event pairs, 302 based on Foata normal form. 8/1971 useless extension candidates. Maximal degree in co-relation 14522. Up to 1313 conditions per place. [2024-06-27 20:48:12,168 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 91 changer transitions 8/328 dead transitions. [2024-06-27 20:48:12,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 328 transitions, 4393 flow [2024-06-27 20:48:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:48:12,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:48:12,169 INFO L175 Difference]: Start difference. First operand has 455 places, 307 transitions, 3397 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:48:12,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 328 transitions, 4393 flow [2024-06-27 20:48:13,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 328 transitions, 4095 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:48:13,836 INFO L231 Difference]: Finished difference. Result has 453 places, 303 transitions, 3235 flow [2024-06-27 20:48:13,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3235, PETRI_PLACES=453, PETRI_TRANSITIONS=303} [2024-06-27 20:48:13,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-27 20:48:13,837 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 303 transitions, 3235 flow [2024-06-27 20:48:13,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:13,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:13,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:13,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 20:48:13,837 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:13,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1928077033, now seen corresponding path program 54 times [2024-06-27 20:48:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861087440] [2024-06-27 20:48:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861087440] [2024-06-27 20:48:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861087440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801764041] [2024-06-27 20:48:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:15,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:15,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 303 transitions, 3235 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:15,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:15,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:15,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:15,639 INFO L124 PetriNetUnfolderBase]: 969/1930 cut-off events. [2024-06-27 20:48:15,640 INFO L125 PetriNetUnfolderBase]: For 451838/451838 co-relation queries the response was YES. [2024-06-27 20:48:15,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14620 conditions, 1930 events. 969/1930 cut-off events. For 451838/451838 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12454 event pairs, 304 based on Foata normal form. 2/1932 useless extension candidates. Maximal degree in co-relation 14430. Up to 1374 conditions per place. [2024-06-27 20:48:15,668 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 91 changer transitions 0/320 dead transitions. [2024-06-27 20:48:15,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 320 transitions, 4002 flow [2024-06-27 20:48:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:48:15,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:48:15,669 INFO L175 Difference]: Start difference. First operand has 453 places, 303 transitions, 3235 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:48:15,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 320 transitions, 4002 flow [2024-06-27 20:48:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 320 transitions, 3714 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-27 20:48:16,856 INFO L231 Difference]: Finished difference. Result has 449 places, 304 transitions, 3216 flow [2024-06-27 20:48:16,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3216, PETRI_PLACES=449, PETRI_TRANSITIONS=304} [2024-06-27 20:48:16,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-27 20:48:16,857 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 304 transitions, 3216 flow [2024-06-27 20:48:16,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:16,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:16,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:16,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-27 20:48:16,857 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:16,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1927932883, now seen corresponding path program 55 times [2024-06-27 20:48:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814447552] [2024-06-27 20:48:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814447552] [2024-06-27 20:48:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814447552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:18,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:18,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36556757] [2024-06-27 20:48:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:18,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 304 transitions, 3216 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:18,710 INFO L124 PetriNetUnfolderBase]: 966/1925 cut-off events. [2024-06-27 20:48:18,710 INFO L125 PetriNetUnfolderBase]: For 356202/356202 co-relation queries the response was YES. [2024-06-27 20:48:18,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13514 conditions, 1925 events. 966/1925 cut-off events. For 356202/356202 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12392 event pairs, 305 based on Foata normal form. 2/1927 useless extension candidates. Maximal degree in co-relation 13327. Up to 1321 conditions per place. [2024-06-27 20:48:18,737 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 95 changer transitions 0/320 dead transitions. [2024-06-27 20:48:18,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 320 transitions, 3898 flow [2024-06-27 20:48:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:48:18,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:48:18,738 INFO L175 Difference]: Start difference. First operand has 449 places, 304 transitions, 3216 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:48:18,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 320 transitions, 3898 flow [2024-06-27 20:48:20,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 320 transitions, 3554 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-27 20:48:20,320 INFO L231 Difference]: Finished difference. Result has 451 places, 304 transitions, 3066 flow [2024-06-27 20:48:20,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2872, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3066, PETRI_PLACES=451, PETRI_TRANSITIONS=304} [2024-06-27 20:48:20,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 421 predicate places. [2024-06-27 20:48:20,321 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 304 transitions, 3066 flow [2024-06-27 20:48:20,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:20,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:20,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-27 20:48:20,321 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:20,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:20,322 INFO L85 PathProgramCache]: Analyzing trace with hash -221143302, now seen corresponding path program 1 times [2024-06-27 20:48:20,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:20,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642414721] [2024-06-27 20:48:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642414721] [2024-06-27 20:48:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642414721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:21,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:48:21,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112402146] [2024-06-27 20:48:21,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:21,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:48:21,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:48:21,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:48:21,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:21,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 304 transitions, 3066 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:21,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:21,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:21,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:21,910 INFO L124 PetriNetUnfolderBase]: 974/1944 cut-off events. [2024-06-27 20:48:21,910 INFO L125 PetriNetUnfolderBase]: For 388780/388780 co-relation queries the response was YES. [2024-06-27 20:48:21,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13334 conditions, 1944 events. 974/1944 cut-off events. For 388780/388780 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12555 event pairs, 290 based on Foata normal form. 6/1950 useless extension candidates. Maximal degree in co-relation 13146. Up to 1773 conditions per place. [2024-06-27 20:48:21,938 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 281 selfloop transitions, 17 changer transitions 27/327 dead transitions. [2024-06-27 20:48:21,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 327 transitions, 3772 flow [2024-06-27 20:48:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:48:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:48:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 20:48:21,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 20:48:21,939 INFO L175 Difference]: Start difference. First operand has 451 places, 304 transitions, 3066 flow. Second operand 12 states and 121 transitions. [2024-06-27 20:48:21,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 327 transitions, 3772 flow [2024-06-27 20:48:23,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 327 transitions, 3259 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-27 20:48:23,019 INFO L231 Difference]: Finished difference. Result has 450 places, 292 transitions, 2468 flow [2024-06-27 20:48:23,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2468, PETRI_PLACES=450, PETRI_TRANSITIONS=292} [2024-06-27 20:48:23,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2024-06-27 20:48:23,020 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 292 transitions, 2468 flow [2024-06-27 20:48:23,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:23,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:23,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-27 20:48:23,020 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -327008440, now seen corresponding path program 2 times [2024-06-27 20:48:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023570219] [2024-06-27 20:48:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023570219] [2024-06-27 20:48:24,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023570219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:24,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:48:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757393412] [2024-06-27 20:48:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:48:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:48:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:48:24,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:24,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 292 transitions, 2468 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:24,728 INFO L124 PetriNetUnfolderBase]: 926/1852 cut-off events. [2024-06-27 20:48:24,728 INFO L125 PetriNetUnfolderBase]: For 382092/382092 co-relation queries the response was YES. [2024-06-27 20:48:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12113 conditions, 1852 events. 926/1852 cut-off events. For 382092/382092 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11854 event pairs, 268 based on Foata normal form. 6/1858 useless extension candidates. Maximal degree in co-relation 11926. Up to 1293 conditions per place. [2024-06-27 20:48:24,748 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 53 changer transitions 27/314 dead transitions. [2024-06-27 20:48:24,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 314 transitions, 3148 flow [2024-06-27 20:48:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:48:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:48:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 20:48:24,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:48:24,749 INFO L175 Difference]: Start difference. First operand has 450 places, 292 transitions, 2468 flow. Second operand 12 states and 126 transitions. [2024-06-27 20:48:24,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 314 transitions, 3148 flow [2024-06-27 20:48:25,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 314 transitions, 3083 flow, removed 13 selfloop flow, removed 18 redundant places. [2024-06-27 20:48:25,843 INFO L231 Difference]: Finished difference. Result has 428 places, 275 transitions, 2342 flow [2024-06-27 20:48:25,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2342, PETRI_PLACES=428, PETRI_TRANSITIONS=275} [2024-06-27 20:48:25,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-27 20:48:25,843 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 275 transitions, 2342 flow [2024-06-27 20:48:25,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:25,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:25,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-27 20:48:25,844 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:25,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 3 times [2024-06-27 20:48:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:25,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633721228] [2024-06-27 20:48:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:25,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:26,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633721228] [2024-06-27 20:48:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633721228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444510349] [2024-06-27 20:48:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:26,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:27,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:27,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 275 transitions, 2342 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:27,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:27,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:27,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:27,602 INFO L124 PetriNetUnfolderBase]: 868/1746 cut-off events. [2024-06-27 20:48:27,602 INFO L125 PetriNetUnfolderBase]: For 381683/381683 co-relation queries the response was YES. [2024-06-27 20:48:27,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11699 conditions, 1746 events. 868/1746 cut-off events. For 381683/381683 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11012 event pairs, 276 based on Foata normal form. 6/1752 useless extension candidates. Maximal degree in co-relation 11524. Up to 1613 conditions per place. [2024-06-27 20:48:27,625 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 258 selfloop transitions, 27 changer transitions 13/300 dead transitions. [2024-06-27 20:48:27,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 300 transitions, 3014 flow [2024-06-27 20:48:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:48:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:48:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-27 20:48:27,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:48:27,626 INFO L175 Difference]: Start difference. First operand has 428 places, 275 transitions, 2342 flow. Second operand 13 states and 130 transitions. [2024-06-27 20:48:27,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 300 transitions, 3014 flow [2024-06-27 20:48:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 300 transitions, 2882 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-06-27 20:48:28,750 INFO L231 Difference]: Finished difference. Result has 411 places, 270 transitions, 2203 flow [2024-06-27 20:48:28,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2203, PETRI_PLACES=411, PETRI_TRANSITIONS=270} [2024-06-27 20:48:28,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-27 20:48:28,750 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 270 transitions, 2203 flow [2024-06-27 20:48:28,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:28,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:28,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:28,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-27 20:48:28,750 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:28,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 595147422, now seen corresponding path program 4 times [2024-06-27 20:48:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377402125] [2024-06-27 20:48:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377402125] [2024-06-27 20:48:29,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377402125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:29,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:29,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487323541] [2024-06-27 20:48:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:30,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:30,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 270 transitions, 2203 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:30,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:30,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:30,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:30,514 INFO L124 PetriNetUnfolderBase]: 855/1723 cut-off events. [2024-06-27 20:48:30,514 INFO L125 PetriNetUnfolderBase]: For 381496/381496 co-relation queries the response was YES. [2024-06-27 20:48:30,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11430 conditions, 1723 events. 855/1723 cut-off events. For 381496/381496 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10865 event pairs, 262 based on Foata normal form. 6/1729 useless extension candidates. Maximal degree in co-relation 11261. Up to 1583 conditions per place. [2024-06-27 20:48:30,537 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 254 selfloop transitions, 18 changer transitions 22/296 dead transitions. [2024-06-27 20:48:30,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 296 transitions, 2853 flow [2024-06-27 20:48:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:48:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:48:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-27 20:48:30,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-27 20:48:30,538 INFO L175 Difference]: Start difference. First operand has 411 places, 270 transitions, 2203 flow. Second operand 13 states and 127 transitions. [2024-06-27 20:48:30,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 296 transitions, 2853 flow [2024-06-27 20:48:31,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 296 transitions, 2795 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:48:31,631 INFO L231 Difference]: Finished difference. Result has 408 places, 264 transitions, 2143 flow [2024-06-27 20:48:31,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2143, PETRI_PLACES=408, PETRI_TRANSITIONS=264} [2024-06-27 20:48:31,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-27 20:48:31,631 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 264 transitions, 2143 flow [2024-06-27 20:48:31,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:31,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:31,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:31,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-27 20:48:31,632 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:31,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1103891976, now seen corresponding path program 5 times [2024-06-27 20:48:31,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:31,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350871052] [2024-06-27 20:48:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:32,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:32,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350871052] [2024-06-27 20:48:32,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350871052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:32,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451387777] [2024-06-27 20:48:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:32,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:32,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:32,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 264 transitions, 2143 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:32,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:32,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:32,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:33,297 INFO L124 PetriNetUnfolderBase]: 832/1676 cut-off events. [2024-06-27 20:48:33,297 INFO L125 PetriNetUnfolderBase]: For 381409/381409 co-relation queries the response was YES. [2024-06-27 20:48:33,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11258 conditions, 1676 events. 832/1676 cut-off events. For 381409/381409 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10467 event pairs, 252 based on Foata normal form. 6/1682 useless extension candidates. Maximal degree in co-relation 11089. Up to 1548 conditions per place. [2024-06-27 20:48:33,319 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 23 changer transitions 17/289 dead transitions. [2024-06-27 20:48:33,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 289 transitions, 2789 flow [2024-06-27 20:48:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:48:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:48:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-27 20:48:33,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176178660049628 [2024-06-27 20:48:33,320 INFO L175 Difference]: Start difference. First operand has 408 places, 264 transitions, 2143 flow. Second operand 13 states and 128 transitions. [2024-06-27 20:48:33,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 289 transitions, 2789 flow [2024-06-27 20:48:34,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 289 transitions, 2743 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:48:34,294 INFO L231 Difference]: Finished difference. Result has 399 places, 258 transitions, 2077 flow [2024-06-27 20:48:34,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2077, PETRI_PLACES=399, PETRI_TRANSITIONS=258} [2024-06-27 20:48:34,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-27 20:48:34,294 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 258 transitions, 2077 flow [2024-06-27 20:48:34,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:34,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:34,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:34,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-27 20:48:34,295 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:34,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash -943316138, now seen corresponding path program 6 times [2024-06-27 20:48:34,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057916314] [2024-06-27 20:48:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:34,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:35,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057916314] [2024-06-27 20:48:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057916314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:35,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:35,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66666195] [2024-06-27 20:48:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:35,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:35,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:35,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 258 transitions, 2077 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:35,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:35,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:35,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:36,109 INFO L124 PetriNetUnfolderBase]: 815/1645 cut-off events. [2024-06-27 20:48:36,109 INFO L125 PetriNetUnfolderBase]: For 381371/381371 co-relation queries the response was YES. [2024-06-27 20:48:36,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11084 conditions, 1645 events. 815/1645 cut-off events. For 381371/381371 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10222 event pairs, 237 based on Foata normal form. 6/1651 useless extension candidates. Maximal degree in co-relation 10919. Up to 1520 conditions per place. [2024-06-27 20:48:36,128 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 236 selfloop transitions, 14 changer transitions 31/283 dead transitions. [2024-06-27 20:48:36,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 283 transitions, 2707 flow [2024-06-27 20:48:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:48:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:48:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-27 20:48:36,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-27 20:48:36,129 INFO L175 Difference]: Start difference. First operand has 399 places, 258 transitions, 2077 flow. Second operand 13 states and 127 transitions. [2024-06-27 20:48:36,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 283 transitions, 2707 flow [2024-06-27 20:48:37,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 283 transitions, 2655 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:48:37,322 INFO L231 Difference]: Finished difference. Result has 395 places, 245 transitions, 1921 flow [2024-06-27 20:48:37,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1921, PETRI_PLACES=395, PETRI_TRANSITIONS=245} [2024-06-27 20:48:37,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-27 20:48:37,323 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 245 transitions, 1921 flow [2024-06-27 20:48:37,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:37,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:37,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:37,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-27 20:48:37,323 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:37,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2088392850, now seen corresponding path program 7 times [2024-06-27 20:48:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:37,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782752930] [2024-06-27 20:48:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:38,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782752930] [2024-06-27 20:48:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782752930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:38,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:38,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:48:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005500530] [2024-06-27 20:48:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:38,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:48:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:48:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:48:38,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:38,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 245 transitions, 1921 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:38,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:38,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:38,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:38,922 INFO L124 PetriNetUnfolderBase]: 784/1575 cut-off events. [2024-06-27 20:48:38,922 INFO L125 PetriNetUnfolderBase]: For 381489/381489 co-relation queries the response was YES. [2024-06-27 20:48:38,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10720 conditions, 1575 events. 784/1575 cut-off events. For 381489/381489 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9758 event pairs, 213 based on Foata normal form. 6/1581 useless extension candidates. Maximal degree in co-relation 10555. Up to 1218 conditions per place. [2024-06-27 20:48:38,941 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 37 changer transitions 21/266 dead transitions. [2024-06-27 20:48:38,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 266 transitions, 2507 flow [2024-06-27 20:48:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:48:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:48:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 20:48:38,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 20:48:38,942 INFO L175 Difference]: Start difference. First operand has 395 places, 245 transitions, 1921 flow. Second operand 12 states and 123 transitions. [2024-06-27 20:48:38,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 266 transitions, 2507 flow [2024-06-27 20:48:39,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 266 transitions, 2435 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 20:48:39,843 INFO L231 Difference]: Finished difference. Result has 380 places, 232 transitions, 1814 flow [2024-06-27 20:48:39,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1814, PETRI_PLACES=380, PETRI_TRANSITIONS=232} [2024-06-27 20:48:39,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-27 20:48:39,843 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 232 transitions, 1814 flow [2024-06-27 20:48:39,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:39,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:39,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:39,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-27 20:48:39,844 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:39,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:39,844 INFO L85 PathProgramCache]: Analyzing trace with hash 906490686, now seen corresponding path program 8 times [2024-06-27 20:48:39,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:39,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208927951] [2024-06-27 20:48:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:39,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208927951] [2024-06-27 20:48:41,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208927951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:41,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:41,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:41,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474815166] [2024-06-27 20:48:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:41,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:41,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 232 transitions, 1814 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:41,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:41,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:41,796 INFO L124 PetriNetUnfolderBase]: 740/1494 cut-off events. [2024-06-27 20:48:41,796 INFO L125 PetriNetUnfolderBase]: For 381022/381022 co-relation queries the response was YES. [2024-06-27 20:48:41,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10300 conditions, 1494 events. 740/1494 cut-off events. For 381022/381022 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9146 event pairs, 219 based on Foata normal form. 6/1500 useless extension candidates. Maximal degree in co-relation 10139. Up to 1380 conditions per place. [2024-06-27 20:48:41,814 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 220 selfloop transitions, 20 changer transitions 13/255 dead transitions. [2024-06-27 20:48:41,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 255 transitions, 2384 flow [2024-06-27 20:48:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:48:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:48:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-06-27 20:48:41,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31265508684863524 [2024-06-27 20:48:41,815 INFO L175 Difference]: Start difference. First operand has 380 places, 232 transitions, 1814 flow. Second operand 13 states and 126 transitions. [2024-06-27 20:48:41,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 255 transitions, 2384 flow [2024-06-27 20:48:42,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 255 transitions, 2281 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 20:48:42,820 INFO L231 Difference]: Finished difference. Result has 368 places, 227 transitions, 1690 flow [2024-06-27 20:48:42,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1690, PETRI_PLACES=368, PETRI_TRANSITIONS=227} [2024-06-27 20:48:42,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-27 20:48:42,820 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 227 transitions, 1690 flow [2024-06-27 20:48:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:42,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:42,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:42,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-27 20:48:42,820 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:42,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2092861500, now seen corresponding path program 9 times [2024-06-27 20:48:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150682493] [2024-06-27 20:48:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:44,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:44,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150682493] [2024-06-27 20:48:44,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150682493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:44,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:44,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793406319] [2024-06-27 20:48:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:44,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:44,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:44,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:44,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 227 transitions, 1690 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:44,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:44,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:44,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:44,741 INFO L124 PetriNetUnfolderBase]: 727/1471 cut-off events. [2024-06-27 20:48:44,741 INFO L125 PetriNetUnfolderBase]: For 380890/380890 co-relation queries the response was YES. [2024-06-27 20:48:44,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 1471 events. 727/1471 cut-off events. For 380890/380890 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8971 event pairs, 217 based on Foata normal form. 6/1477 useless extension candidates. Maximal degree in co-relation 9895. Up to 1360 conditions per place. [2024-06-27 20:48:44,758 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 209 selfloop transitions, 11 changer transitions 28/250 dead transitions. [2024-06-27 20:48:44,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 250 transitions, 2248 flow [2024-06-27 20:48:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:48:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:48:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-27 20:48:44,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31017369727047145 [2024-06-27 20:48:44,758 INFO L175 Difference]: Start difference. First operand has 368 places, 227 transitions, 1690 flow. Second operand 13 states and 125 transitions. [2024-06-27 20:48:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 250 transitions, 2248 flow [2024-06-27 20:48:45,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 250 transitions, 2200 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:48:45,743 INFO L231 Difference]: Finished difference. Result has 365 places, 215 transitions, 1531 flow [2024-06-27 20:48:45,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1531, PETRI_PLACES=365, PETRI_TRANSITIONS=215} [2024-06-27 20:48:45,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-27 20:48:45,743 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 215 transitions, 1531 flow [2024-06-27 20:48:45,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:45,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:45,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-27 20:48:45,744 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:45,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1572053710, now seen corresponding path program 10 times [2024-06-27 20:48:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312903471] [2024-06-27 20:48:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:46,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:46,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312903471] [2024-06-27 20:48:46,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312903471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:46,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:46,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:46,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23212642] [2024-06-27 20:48:46,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:46,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:47,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:47,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 215 transitions, 1531 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:47,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:47,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:47,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:47,495 INFO L124 PetriNetUnfolderBase]: 683/1377 cut-off events. [2024-06-27 20:48:47,495 INFO L125 PetriNetUnfolderBase]: For 333186/333186 co-relation queries the response was YES. [2024-06-27 20:48:47,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1377 events. 683/1377 cut-off events. For 333186/333186 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8307 event pairs, 192 based on Foata normal form. 6/1383 useless extension candidates. Maximal degree in co-relation 8735. Up to 1203 conditions per place. [2024-06-27 20:48:47,511 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 19 changer transitions 21/236 dead transitions. [2024-06-27 20:48:47,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 236 transitions, 2057 flow [2024-06-27 20:48:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:48:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:48:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 20:48:47,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:48:47,511 INFO L175 Difference]: Start difference. First operand has 365 places, 215 transitions, 1531 flow. Second operand 12 states and 120 transitions. [2024-06-27 20:48:47,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 236 transitions, 2057 flow [2024-06-27 20:48:48,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 236 transitions, 1980 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 20:48:48,406 INFO L231 Difference]: Finished difference. Result has 349 places, 202 transitions, 1388 flow [2024-06-27 20:48:48,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1388, PETRI_PLACES=349, PETRI_TRANSITIONS=202} [2024-06-27 20:48:48,407 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 20:48:48,407 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 202 transitions, 1388 flow [2024-06-27 20:48:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:48,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:48,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-27 20:48:48,407 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1571880730, now seen corresponding path program 11 times [2024-06-27 20:48:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314668004] [2024-06-27 20:48:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314668004] [2024-06-27 20:48:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314668004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:48:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487095111] [2024-06-27 20:48:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:49,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:48:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:48:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:48:49,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:49,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 202 transitions, 1388 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:49,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:49,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:49,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:50,082 INFO L124 PetriNetUnfolderBase]: 644/1304 cut-off events. [2024-06-27 20:48:50,083 INFO L125 PetriNetUnfolderBase]: For 333071/333071 co-relation queries the response was YES. [2024-06-27 20:48:50,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8538 conditions, 1304 events. 644/1304 cut-off events. For 333071/333071 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7732 event pairs, 186 based on Foata normal form. 6/1310 useless extension candidates. Maximal degree in co-relation 8384. Up to 1149 conditions per place. [2024-06-27 20:48:50,096 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 8 changer transitions 37/223 dead transitions. [2024-06-27 20:48:50,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 223 transitions, 1886 flow [2024-06-27 20:48:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:48:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:48:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 20:48:50,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 20:48:50,097 INFO L175 Difference]: Start difference. First operand has 349 places, 202 transitions, 1388 flow. Second operand 12 states and 118 transitions. [2024-06-27 20:48:50,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 223 transitions, 1886 flow [2024-06-27 20:48:50,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 223 transitions, 1819 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 20:48:50,990 INFO L231 Difference]: Finished difference. Result has 337 places, 182 transitions, 1191 flow [2024-06-27 20:48:50,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1191, PETRI_PLACES=337, PETRI_TRANSITIONS=182} [2024-06-27 20:48:50,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-27 20:48:50,990 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 182 transitions, 1191 flow [2024-06-27 20:48:50,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:50,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:50,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:50,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-27 20:48:50,991 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:50,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash -432548268, now seen corresponding path program 12 times [2024-06-27 20:48:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560416290] [2024-06-27 20:48:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560416290] [2024-06-27 20:48:52,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560416290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:52,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:48:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204292001] [2024-06-27 20:48:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:52,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:48:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:48:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:48:52,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:52,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 182 transitions, 1191 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:52,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:52,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:52,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:52,468 INFO L124 PetriNetUnfolderBase]: 592/1192 cut-off events. [2024-06-27 20:48:52,468 INFO L125 PetriNetUnfolderBase]: For 332917/332917 co-relation queries the response was YES. [2024-06-27 20:48:52,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8057 conditions, 1192 events. 592/1192 cut-off events. For 332917/332917 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6941 event pairs, 178 based on Foata normal form. 6/1198 useless extension candidates. Maximal degree in co-relation 7905. Up to 1103 conditions per place. [2024-06-27 20:48:52,481 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 7 changer transitions 21/200 dead transitions. [2024-06-27 20:48:52,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 200 transitions, 1629 flow [2024-06-27 20:48:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:48:52,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-27 20:48:52,482 INFO L175 Difference]: Start difference. First operand has 337 places, 182 transitions, 1191 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:48:52,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 200 transitions, 1629 flow [2024-06-27 20:48:53,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 200 transitions, 1527 flow, removed 25 selfloop flow, removed 16 redundant places. [2024-06-27 20:48:53,358 INFO L231 Difference]: Finished difference. Result has 309 places, 176 transitions, 1078 flow [2024-06-27 20:48:53,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1078, PETRI_PLACES=309, PETRI_TRANSITIONS=176} [2024-06-27 20:48:53,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-27 20:48:53,359 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 176 transitions, 1078 flow [2024-06-27 20:48:53,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:53,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:53,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:53,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-27 20:48:53,359 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:53,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2127207982, now seen corresponding path program 13 times [2024-06-27 20:48:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:53,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158054101] [2024-06-27 20:48:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158054101] [2024-06-27 20:48:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158054101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:54,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896123428] [2024-06-27 20:48:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:54,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:55,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:55,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 176 transitions, 1078 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:55,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:55,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:55,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:55,395 INFO L124 PetriNetUnfolderBase]: 568/1146 cut-off events. [2024-06-27 20:48:55,395 INFO L125 PetriNetUnfolderBase]: For 333054/333054 co-relation queries the response was YES. [2024-06-27 20:48:55,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7794 conditions, 1146 events. 568/1146 cut-off events. For 333054/333054 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6623 event pairs, 164 based on Foata normal form. 6/1152 useless extension candidates. Maximal degree in co-relation 7651. Up to 1009 conditions per place. [2024-06-27 20:48:55,407 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 18 changer transitions 13/195 dead transitions. [2024-06-27 20:48:55,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 195 transitions, 1512 flow [2024-06-27 20:48:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:48:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:48:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-27 20:48:55,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-27 20:48:55,412 INFO L175 Difference]: Start difference. First operand has 309 places, 176 transitions, 1078 flow. Second operand 12 states and 115 transitions. [2024-06-27 20:48:55,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 195 transitions, 1512 flow [2024-06-27 20:48:56,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 195 transitions, 1486 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:48:56,118 INFO L231 Difference]: Finished difference. Result has 300 places, 171 transitions, 1063 flow [2024-06-27 20:48:56,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1063, PETRI_PLACES=300, PETRI_TRANSITIONS=171} [2024-06-27 20:48:56,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-27 20:48:56,119 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 171 transitions, 1063 flow [2024-06-27 20:48:56,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:56,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:56,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-27 20:48:56,119 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:56,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash 111541142, now seen corresponding path program 14 times [2024-06-27 20:48:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:56,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075207045] [2024-06-27 20:48:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075207045] [2024-06-27 20:48:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075207045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:57,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:57,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:48:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860509823] [2024-06-27 20:48:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:48:57,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:48:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:48:57,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:57,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 171 transitions, 1063 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:57,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:57,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:57,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:57,732 INFO L124 PetriNetUnfolderBase]: 537/1085 cut-off events. [2024-06-27 20:48:57,732 INFO L125 PetriNetUnfolderBase]: For 263116/263116 co-relation queries the response was YES. [2024-06-27 20:48:57,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 1085 events. 537/1085 cut-off events. For 263116/263116 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6181 event pairs, 143 based on Foata normal form. 6/1091 useless extension candidates. Maximal degree in co-relation 6622. Up to 864 conditions per place. [2024-06-27 20:48:57,744 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 134 selfloop transitions, 26 changer transitions 26/188 dead transitions. [2024-06-27 20:48:57,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 188 transitions, 1481 flow [2024-06-27 20:48:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:48:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:48:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:48:57,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-27 20:48:57,745 INFO L175 Difference]: Start difference. First operand has 300 places, 171 transitions, 1063 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:48:57,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 188 transitions, 1481 flow [2024-06-27 20:48:58,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 188 transitions, 1437 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:48:58,366 INFO L231 Difference]: Finished difference. Result has 293 places, 153 transitions, 977 flow [2024-06-27 20:48:58,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=977, PETRI_PLACES=293, PETRI_TRANSITIONS=153} [2024-06-27 20:48:58,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-27 20:48:58,367 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 153 transitions, 977 flow [2024-06-27 20:48:58,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:58,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:58,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-27 20:48:58,367 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:48:58,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2122739332, now seen corresponding path program 15 times [2024-06-27 20:48:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135242521] [2024-06-27 20:48:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:59,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:59,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135242521] [2024-06-27 20:48:59,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135242521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:59,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:59,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:48:59,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866128915] [2024-06-27 20:48:59,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:59,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:48:59,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:59,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:48:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:48:59,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:48:59,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 153 transitions, 977 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:59,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:59,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:48:59,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:00,365 INFO L124 PetriNetUnfolderBase]: 485/989 cut-off events. [2024-06-27 20:49:00,365 INFO L125 PetriNetUnfolderBase]: For 250204/250204 co-relation queries the response was YES. [2024-06-27 20:49:00,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 989 events. 485/989 cut-off events. For 250204/250204 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5515 event pairs, 147 based on Foata normal form. 6/995 useless extension candidates. Maximal degree in co-relation 6255. Up to 895 conditions per place. [2024-06-27 20:49:00,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 10 changer transitions 20/172 dead transitions. [2024-06-27 20:49:00,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 172 transitions, 1367 flow [2024-06-27 20:49:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-27 20:49:00,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-27 20:49:00,377 INFO L175 Difference]: Start difference. First operand has 293 places, 153 transitions, 977 flow. Second operand 12 states and 111 transitions. [2024-06-27 20:49:00,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 172 transitions, 1367 flow [2024-06-27 20:49:00,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 172 transitions, 1291 flow, removed 12 selfloop flow, removed 19 redundant places. [2024-06-27 20:49:00,914 INFO L231 Difference]: Finished difference. Result has 270 places, 145 transitions, 872 flow [2024-06-27 20:49:00,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=872, PETRI_PLACES=270, PETRI_TRANSITIONS=145} [2024-06-27 20:49:00,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:49:00,914 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 145 transitions, 872 flow [2024-06-27 20:49:00,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:00,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:00,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:00,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-27 20:49:00,915 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:00,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2144075322, now seen corresponding path program 16 times [2024-06-27 20:49:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:00,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578997566] [2024-06-27 20:49:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:00,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578997566] [2024-06-27 20:49:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578997566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:02,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:02,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019880958] [2024-06-27 20:49:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:02,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:02,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:02,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 145 transitions, 872 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:02,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:02,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:02,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:02,868 INFO L124 PetriNetUnfolderBase]: 463/947 cut-off events. [2024-06-27 20:49:02,868 INFO L125 PetriNetUnfolderBase]: For 205644/205644 co-relation queries the response was YES. [2024-06-27 20:49:02,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5868 conditions, 947 events. 463/947 cut-off events. For 205644/205644 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5205 event pairs, 141 based on Foata normal form. 6/953 useless extension candidates. Maximal degree in co-relation 5744. Up to 859 conditions per place. [2024-06-27 20:49:02,876 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 5 changer transitions 26/164 dead transitions. [2024-06-27 20:49:02,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 164 transitions, 1242 flow [2024-06-27 20:49:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-27 20:49:02,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-27 20:49:02,878 INFO L175 Difference]: Start difference. First operand has 270 places, 145 transitions, 872 flow. Second operand 12 states and 110 transitions. [2024-06-27 20:49:02,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 164 transitions, 1242 flow [2024-06-27 20:49:03,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 164 transitions, 1212 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:49:03,316 INFO L231 Difference]: Finished difference. Result has 260 places, 135 transitions, 795 flow [2024-06-27 20:49:03,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=795, PETRI_PLACES=260, PETRI_TRANSITIONS=135} [2024-06-27 20:49:03,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 20:49:03,316 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 135 transitions, 795 flow [2024-06-27 20:49:03,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:03,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:03,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:03,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-27 20:49:03,317 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:03,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:03,317 INFO L85 PathProgramCache]: Analyzing trace with hash -760331908, now seen corresponding path program 17 times [2024-06-27 20:49:03,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:03,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415711568] [2024-06-27 20:49:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:04,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:04,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415711568] [2024-06-27 20:49:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415711568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679061961] [2024-06-27 20:49:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:04,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:04,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:04,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 135 transitions, 795 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:04,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:04,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:04,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:05,199 INFO L124 PetriNetUnfolderBase]: 436/892 cut-off events. [2024-06-27 20:49:05,199 INFO L125 PetriNetUnfolderBase]: For 190507/190507 co-relation queries the response was YES. [2024-06-27 20:49:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5566 conditions, 892 events. 436/892 cut-off events. For 190507/190507 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4866 event pairs, 133 based on Foata normal form. 6/898 useless extension candidates. Maximal degree in co-relation 5446. Up to 790 conditions per place. [2024-06-27 20:49:05,206 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 14 changer transitions 15/154 dead transitions. [2024-06-27 20:49:05,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 154 transitions, 1149 flow [2024-06-27 20:49:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:49:05,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:49:05,207 INFO L175 Difference]: Start difference. First operand has 260 places, 135 transitions, 795 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:49:05,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 154 transitions, 1149 flow [2024-06-27 20:49:05,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 154 transitions, 1113 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-27 20:49:05,529 INFO L231 Difference]: Finished difference. Result has 244 places, 130 transitions, 775 flow [2024-06-27 20:49:05,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=775, PETRI_PLACES=244, PETRI_TRANSITIONS=130} [2024-06-27 20:49:05,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-27 20:49:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 130 transitions, 775 flow [2024-06-27 20:49:05,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:05,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:05,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-27 20:49:05,530 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:05,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1651247194, now seen corresponding path program 18 times [2024-06-27 20:49:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:05,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090338124] [2024-06-27 20:49:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:06,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:06,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090338124] [2024-06-27 20:49:06,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090338124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:06,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:06,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866137653] [2024-06-27 20:49:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:07,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:07,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 130 transitions, 775 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:07,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:07,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:07,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:07,416 INFO L124 PetriNetUnfolderBase]: 423/865 cut-off events. [2024-06-27 20:49:07,416 INFO L125 PetriNetUnfolderBase]: For 168933/168933 co-relation queries the response was YES. [2024-06-27 20:49:07,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5276 conditions, 865 events. 423/865 cut-off events. For 168933/168933 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4664 event pairs, 131 based on Foata normal form. 6/871 useless extension candidates. Maximal degree in co-relation 5163. Up to 772 conditions per place. [2024-06-27 20:49:07,423 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 12 changer transitions 14/149 dead transitions. [2024-06-27 20:49:07,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 149 transitions, 1111 flow [2024-06-27 20:49:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:49:07,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:49:07,424 INFO L175 Difference]: Start difference. First operand has 244 places, 130 transitions, 775 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:49:07,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 149 transitions, 1111 flow [2024-06-27 20:49:07,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 149 transitions, 1073 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:07,761 INFO L231 Difference]: Finished difference. Result has 236 places, 126 transitions, 746 flow [2024-06-27 20:49:07,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=746, PETRI_PLACES=236, PETRI_TRANSITIONS=126} [2024-06-27 20:49:07,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-27 20:49:07,761 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 126 transitions, 746 flow [2024-06-27 20:49:07,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:07,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:07,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:07,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-27 20:49:07,762 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:07,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:07,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1082940756, now seen corresponding path program 19 times [2024-06-27 20:49:07,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:07,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359602333] [2024-06-27 20:49:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:07,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359602333] [2024-06-27 20:49:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359602333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:09,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:09,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527255373] [2024-06-27 20:49:09,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:09,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:09,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 126 transitions, 746 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:09,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:09,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:09,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:09,795 INFO L124 PetriNetUnfolderBase]: 409/839 cut-off events. [2024-06-27 20:49:09,795 INFO L125 PetriNetUnfolderBase]: For 155269/155269 co-relation queries the response was YES. [2024-06-27 20:49:09,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5076 conditions, 839 events. 409/839 cut-off events. For 155269/155269 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4486 event pairs, 129 based on Foata normal form. 6/845 useless extension candidates. Maximal degree in co-relation 4967. Up to 754 conditions per place. [2024-06-27 20:49:09,801 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 11 changer transitions 14/144 dead transitions. [2024-06-27 20:49:09,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 144 transitions, 1070 flow [2024-06-27 20:49:09,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-27 20:49:09,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-27 20:49:09,802 INFO L175 Difference]: Start difference. First operand has 236 places, 126 transitions, 746 flow. Second operand 12 states and 110 transitions. [2024-06-27 20:49:09,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 144 transitions, 1070 flow [2024-06-27 20:49:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 144 transitions, 1038 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:49:10,040 INFO L231 Difference]: Finished difference. Result has 230 places, 122 transitions, 721 flow [2024-06-27 20:49:10,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=721, PETRI_PLACES=230, PETRI_TRANSITIONS=122} [2024-06-27 20:49:10,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 20:49:10,040 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 122 transitions, 721 flow [2024-06-27 20:49:10,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:10,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:10,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:10,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-27 20:49:10,041 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:10,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1914750088, now seen corresponding path program 20 times [2024-06-27 20:49:10,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:10,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441111026] [2024-06-27 20:49:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:11,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441111026] [2024-06-27 20:49:11,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441111026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:11,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:11,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:11,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457961073] [2024-06-27 20:49:11,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:11,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:11,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:11,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:11,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:11,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 122 transitions, 721 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:11,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:11,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:11,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:11,834 INFO L124 PetriNetUnfolderBase]: 395/813 cut-off events. [2024-06-27 20:49:11,834 INFO L125 PetriNetUnfolderBase]: For 145397/145397 co-relation queries the response was YES. [2024-06-27 20:49:11,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 813 events. 395/813 cut-off events. For 145397/145397 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4311 event pairs, 125 based on Foata normal form. 6/819 useless extension candidates. Maximal degree in co-relation 4807. Up to 728 conditions per place. [2024-06-27 20:49:11,840 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 8 changer transitions 18/141 dead transitions. [2024-06-27 20:49:11,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 141 transitions, 1041 flow [2024-06-27 20:49:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-27 20:49:11,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-27 20:49:11,841 INFO L175 Difference]: Start difference. First operand has 230 places, 122 transitions, 721 flow. Second operand 12 states and 111 transitions. [2024-06-27 20:49:11,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 141 transitions, 1041 flow [2024-06-27 20:49:12,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 141 transitions, 1011 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:49:12,031 INFO L231 Difference]: Finished difference. Result has 224 places, 116 transitions, 683 flow [2024-06-27 20:49:12,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=683, PETRI_PLACES=224, PETRI_TRANSITIONS=116} [2024-06-27 20:49:12,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-27 20:49:12,032 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 116 transitions, 683 flow [2024-06-27 20:49:12,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:12,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:12,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:12,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-27 20:49:12,032 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:12,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash 337520008, now seen corresponding path program 21 times [2024-06-27 20:49:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398167384] [2024-06-27 20:49:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:13,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:13,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398167384] [2024-06-27 20:49:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398167384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258836809] [2024-06-27 20:49:13,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:13,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:13,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 116 transitions, 683 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:13,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:13,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:13,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:13,957 INFO L124 PetriNetUnfolderBase]: 378/778 cut-off events. [2024-06-27 20:49:13,957 INFO L125 PetriNetUnfolderBase]: For 135849/135849 co-relation queries the response was YES. [2024-06-27 20:49:13,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 778 events. 378/778 cut-off events. For 135849/135849 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4078 event pairs, 121 based on Foata normal form. 6/784 useless extension candidates. Maximal degree in co-relation 4619. Up to 702 conditions per place. [2024-06-27 20:49:13,963 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 7 changer transitions 17/134 dead transitions. [2024-06-27 20:49:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 134 transitions, 987 flow [2024-06-27 20:49:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2024-06-27 20:49:13,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-27 20:49:13,964 INFO L175 Difference]: Start difference. First operand has 224 places, 116 transitions, 683 flow. Second operand 12 states and 108 transitions. [2024-06-27 20:49:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 134 transitions, 987 flow [2024-06-27 20:49:14,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 134 transitions, 959 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:14,148 INFO L231 Difference]: Finished difference. Result has 214 places, 111 transitions, 650 flow [2024-06-27 20:49:14,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=650, PETRI_PLACES=214, PETRI_TRANSITIONS=111} [2024-06-27 20:49:14,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-27 20:49:14,148 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 111 transitions, 650 flow [2024-06-27 20:49:14,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:14,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:14,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:14,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-27 20:49:14,149 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:14,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash 699678042, now seen corresponding path program 22 times [2024-06-27 20:49:14,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:14,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338958674] [2024-06-27 20:49:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:15,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:15,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338958674] [2024-06-27 20:49:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338958674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224449762] [2024-06-27 20:49:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:15,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:15,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:15,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:15,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:15,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:15,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 111 transitions, 650 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:15,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:15,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:15,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:15,870 INFO L124 PetriNetUnfolderBase]: 360/744 cut-off events. [2024-06-27 20:49:15,870 INFO L125 PetriNetUnfolderBase]: For 120657/120657 co-relation queries the response was YES. [2024-06-27 20:49:15,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 744 events. 360/744 cut-off events. For 120657/120657 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3865 event pairs, 115 based on Foata normal form. 6/750 useless extension candidates. Maximal degree in co-relation 4377. Up to 668 conditions per place. [2024-06-27 20:49:15,876 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 3 changer transitions 25/129 dead transitions. [2024-06-27 20:49:15,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 129 transitions, 944 flow [2024-06-27 20:49:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-27 20:49:15,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28763440860215056 [2024-06-27 20:49:15,881 INFO L175 Difference]: Start difference. First operand has 214 places, 111 transitions, 650 flow. Second operand 12 states and 107 transitions. [2024-06-27 20:49:15,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 129 transitions, 944 flow [2024-06-27 20:49:16,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 129 transitions, 920 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:49:16,115 INFO L231 Difference]: Finished difference. Result has 206 places, 103 transitions, 598 flow [2024-06-27 20:49:16,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=206, PETRI_TRANSITIONS=103} [2024-06-27 20:49:16,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-27 20:49:16,115 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 103 transitions, 598 flow [2024-06-27 20:49:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:16,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:16,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-27 20:49:16,115 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:16,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash -962207770, now seen corresponding path program 23 times [2024-06-27 20:49:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117205604] [2024-06-27 20:49:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117205604] [2024-06-27 20:49:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117205604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108779474] [2024-06-27 20:49:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:17,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:17,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:17,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:17,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 103 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:17,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:17,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:17,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:17,754 INFO L124 PetriNetUnfolderBase]: 337/696 cut-off events. [2024-06-27 20:49:17,754 INFO L125 PetriNetUnfolderBase]: For 109136/109136 co-relation queries the response was YES. [2024-06-27 20:49:17,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 696 events. 337/696 cut-off events. For 109136/109136 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3585 event pairs, 99 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4121. Up to 476 conditions per place. [2024-06-27 20:49:17,760 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 34 changer transitions 12/121 dead transitions. [2024-06-27 20:49:17,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 121 transitions, 874 flow [2024-06-27 20:49:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-27 20:49:17,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-27 20:49:17,760 INFO L175 Difference]: Start difference. First operand has 206 places, 103 transitions, 598 flow. Second operand 12 states and 115 transitions. [2024-06-27 20:49:17,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 121 transitions, 874 flow [2024-06-27 20:49:17,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 121 transitions, 850 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:17,879 INFO L231 Difference]: Finished difference. Result has 191 places, 99 transitions, 625 flow [2024-06-27 20:49:17,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=625, PETRI_PLACES=191, PETRI_TRANSITIONS=99} [2024-06-27 20:49:17,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-27 20:49:17,880 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 99 transitions, 625 flow [2024-06-27 20:49:17,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:17,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:17,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:17,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-27 20:49:17,880 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:17,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash -275027432, now seen corresponding path program 24 times [2024-06-27 20:49:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:17,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483716520] [2024-06-27 20:49:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:17,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483716520] [2024-06-27 20:49:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483716520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774944707] [2024-06-27 20:49:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:19,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:19,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:19,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 99 transitions, 625 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:19,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:19,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:19,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:19,413 INFO L124 PetriNetUnfolderBase]: 313/644 cut-off events. [2024-06-27 20:49:19,413 INFO L125 PetriNetUnfolderBase]: For 75432/75432 co-relation queries the response was YES. [2024-06-27 20:49:19,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 644 events. 313/644 cut-off events. For 75432/75432 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3241 event pairs, 86 based on Foata normal form. 6/650 useless extension candidates. Maximal degree in co-relation 3430. Up to 433 conditions per place. [2024-06-27 20:49:19,418 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 32 changer transitions 11/115 dead transitions. [2024-06-27 20:49:19,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 115 transitions, 885 flow [2024-06-27 20:49:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:49:19,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 20:49:19,418 INFO L175 Difference]: Start difference. First operand has 191 places, 99 transitions, 625 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:49:19,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 115 transitions, 885 flow [2024-06-27 20:49:19,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 115 transitions, 809 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:19,516 INFO L231 Difference]: Finished difference. Result has 184 places, 96 transitions, 601 flow [2024-06-27 20:49:19,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=601, PETRI_PLACES=184, PETRI_TRANSITIONS=96} [2024-06-27 20:49:19,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-27 20:49:19,516 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 96 transitions, 601 flow [2024-06-27 20:49:19,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:19,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:19,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-27 20:49:19,516 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:19,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1698003160, now seen corresponding path program 25 times [2024-06-27 20:49:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185622917] [2024-06-27 20:49:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:20,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:20,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185622917] [2024-06-27 20:49:20,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185622917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:20,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:20,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920252089] [2024-06-27 20:49:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:20,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:20,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:20,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:20,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 96 transitions, 601 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:20,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:20,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:20,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:21,018 INFO L124 PetriNetUnfolderBase]: 303/626 cut-off events. [2024-06-27 20:49:21,019 INFO L125 PetriNetUnfolderBase]: For 69252/69252 co-relation queries the response was YES. [2024-06-27 20:49:21,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 626 events. 303/626 cut-off events. For 69252/69252 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3128 event pairs, 82 based on Foata normal form. 6/632 useless extension candidates. Maximal degree in co-relation 3302. Up to 409 conditions per place. [2024-06-27 20:49:21,023 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 31 changer transitions 11/112 dead transitions. [2024-06-27 20:49:21,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 112 transitions, 855 flow [2024-06-27 20:49:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:49:21,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 20:49:21,024 INFO L175 Difference]: Start difference. First operand has 184 places, 96 transitions, 601 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:49:21,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 112 transitions, 855 flow [2024-06-27 20:49:21,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 112 transitions, 785 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:49:21,126 INFO L231 Difference]: Finished difference. Result has 179 places, 91 transitions, 572 flow [2024-06-27 20:49:21,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=572, PETRI_PLACES=179, PETRI_TRANSITIONS=91} [2024-06-27 20:49:21,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-27 20:49:21,126 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 91 transitions, 572 flow [2024-06-27 20:49:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:21,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:21,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-27 20:49:21,126 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:21,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash -944058156, now seen corresponding path program 26 times [2024-06-27 20:49:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692643282] [2024-06-27 20:49:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:22,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:22,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692643282] [2024-06-27 20:49:22,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692643282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:22,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:22,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:22,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696721213] [2024-06-27 20:49:22,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:22,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:22,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:22,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:22,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:22,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:22,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 91 transitions, 572 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:22,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:22,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:22,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:22,696 INFO L124 PetriNetUnfolderBase]: 275/566 cut-off events. [2024-06-27 20:49:22,696 INFO L125 PetriNetUnfolderBase]: For 52162/52162 co-relation queries the response was YES. [2024-06-27 20:49:22,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 566 events. 275/566 cut-off events. For 52162/52162 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2729 event pairs, 85 based on Foata normal form. 6/572 useless extension candidates. Maximal degree in co-relation 2714. Up to 507 conditions per place. [2024-06-27 20:49:22,699 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 6 changer transitions 16/104 dead transitions. [2024-06-27 20:49:22,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 104 transitions, 804 flow [2024-06-27 20:49:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-27 20:49:22,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2844574780058651 [2024-06-27 20:49:22,700 INFO L175 Difference]: Start difference. First operand has 179 places, 91 transitions, 572 flow. Second operand 11 states and 97 transitions. [2024-06-27 20:49:22,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 104 transitions, 804 flow [2024-06-27 20:49:22,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 104 transitions, 732 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 20:49:22,767 INFO L231 Difference]: Finished difference. Result has 171 places, 85 transitions, 487 flow [2024-06-27 20:49:22,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=487, PETRI_PLACES=171, PETRI_TRANSITIONS=85} [2024-06-27 20:49:22,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-27 20:49:22,768 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 85 transitions, 487 flow [2024-06-27 20:49:22,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:22,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:22,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:22,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-27 20:49:22,768 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:22,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash 707002110, now seen corresponding path program 27 times [2024-06-27 20:49:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:22,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963556782] [2024-06-27 20:49:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:22,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:24,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963556782] [2024-06-27 20:49:24,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963556782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:24,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:24,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:24,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256053587] [2024-06-27 20:49:24,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:24,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:24,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:24,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:24,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 85 transitions, 487 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:24,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:24,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:24,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:24,572 INFO L124 PetriNetUnfolderBase]: 249/508 cut-off events. [2024-06-27 20:49:24,572 INFO L125 PetriNetUnfolderBase]: For 34480/34480 co-relation queries the response was YES. [2024-06-27 20:49:24,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 508 events. 249/508 cut-off events. For 34480/34480 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2365 event pairs, 60 based on Foata normal form. 6/514 useless extension candidates. Maximal degree in co-relation 2068. Up to 299 conditions per place. [2024-06-27 20:49:24,575 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 22 changer transitions 21/100 dead transitions. [2024-06-27 20:49:24,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 100 transitions, 715 flow [2024-06-27 20:49:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:49:24,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-27 20:49:24,576 INFO L175 Difference]: Start difference. First operand has 171 places, 85 transitions, 487 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:49:24,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 100 transitions, 715 flow [2024-06-27 20:49:24,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 100 transitions, 693 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:49:24,621 INFO L231 Difference]: Finished difference. Result has 160 places, 72 transitions, 450 flow [2024-06-27 20:49:24,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=450, PETRI_PLACES=160, PETRI_TRANSITIONS=72} [2024-06-27 20:49:24,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-27 20:49:24,621 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 72 transitions, 450 flow [2024-06-27 20:49:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:24,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:24,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-27 20:49:24,621 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:24,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 28 times [2024-06-27 20:49:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793853106] [2024-06-27 20:49:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:25,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:25,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793853106] [2024-06-27 20:49:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793853106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:25,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216696402] [2024-06-27 20:49:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:25,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:25,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:25,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 72 transitions, 450 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:25,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:25,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:25,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:26,188 INFO L124 PetriNetUnfolderBase]: 210/435 cut-off events. [2024-06-27 20:49:26,189 INFO L125 PetriNetUnfolderBase]: For 30214/30214 co-relation queries the response was YES. [2024-06-27 20:49:26,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 435 events. 210/435 cut-off events. For 30214/30214 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1914 event pairs, 56 based on Foata normal form. 6/441 useless extension candidates. Maximal degree in co-relation 1854. Up to 289 conditions per place. [2024-06-27 20:49:26,191 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 22 changer transitions 12/90 dead transitions. [2024-06-27 20:49:26,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 90 transitions, 664 flow [2024-06-27 20:49:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-27 20:49:26,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:49:26,192 INFO L175 Difference]: Start difference. First operand has 160 places, 72 transitions, 450 flow. Second operand 12 states and 114 transitions. [2024-06-27 20:49:26,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 90 transitions, 664 flow [2024-06-27 20:49:26,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 90 transitions, 600 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-27 20:49:26,221 INFO L231 Difference]: Finished difference. Result has 142 places, 68 transitions, 413 flow [2024-06-27 20:49:26,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=413, PETRI_PLACES=142, PETRI_TRANSITIONS=68} [2024-06-27 20:49:26,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-27 20:49:26,221 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 68 transitions, 413 flow [2024-06-27 20:49:26,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:26,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:26,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-27 20:49:26,222 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:26,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -280349084, now seen corresponding path program 29 times [2024-06-27 20:49:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685311126] [2024-06-27 20:49:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685311126] [2024-06-27 20:49:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685311126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503156930] [2024-06-27 20:49:27,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:27,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:27,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 68 transitions, 413 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:27,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:27,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:27,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:27,787 INFO L124 PetriNetUnfolderBase]: 201/416 cut-off events. [2024-06-27 20:49:27,787 INFO L125 PetriNetUnfolderBase]: For 21568/21568 co-relation queries the response was YES. [2024-06-27 20:49:27,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 416 events. 201/416 cut-off events. For 21568/21568 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1792 event pairs, 54 based on Foata normal form. 6/422 useless extension candidates. Maximal degree in co-relation 1694. Up to 235 conditions per place. [2024-06-27 20:49:27,789 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 15 changer transitions 23/83 dead transitions. [2024-06-27 20:49:27,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 83 transitions, 607 flow [2024-06-27 20:49:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-27 20:49:27,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-27 20:49:27,790 INFO L175 Difference]: Start difference. First operand has 142 places, 68 transitions, 413 flow. Second operand 11 states and 102 transitions. [2024-06-27 20:49:27,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 83 transitions, 607 flow [2024-06-27 20:49:27,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 83 transitions, 555 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:27,813 INFO L231 Difference]: Finished difference. Result has 135 places, 55 transitions, 337 flow [2024-06-27 20:49:27,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=337, PETRI_PLACES=135, PETRI_TRANSITIONS=55} [2024-06-27 20:49:27,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 20:49:27,813 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 55 transitions, 337 flow [2024-06-27 20:49:27,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:27,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:27,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:27,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-27 20:49:27,813 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:27,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:27,814 INFO L85 PathProgramCache]: Analyzing trace with hash -934901258, now seen corresponding path program 30 times [2024-06-27 20:49:27,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:27,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739609642] [2024-06-27 20:49:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:27,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739609642] [2024-06-27 20:49:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739609642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:28,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:28,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896663947] [2024-06-27 20:49:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:29,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:29,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 55 transitions, 337 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:29,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:29,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:29,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:29,307 INFO L124 PetriNetUnfolderBase]: 145/304 cut-off events. [2024-06-27 20:49:29,308 INFO L125 PetriNetUnfolderBase]: For 12686/12686 co-relation queries the response was YES. [2024-06-27 20:49:29,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 304 events. 145/304 cut-off events. For 12686/12686 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1180 event pairs, 35 based on Foata normal form. 6/310 useless extension candidates. Maximal degree in co-relation 1082. Up to 182 conditions per place. [2024-06-27 20:49:29,309 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 40 selfloop transitions, 15 changer transitions 14/71 dead transitions. [2024-06-27 20:49:29,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 71 transitions, 509 flow [2024-06-27 20:49:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:49:29,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-27 20:49:29,310 INFO L175 Difference]: Start difference. First operand has 135 places, 55 transitions, 337 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:49:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 71 transitions, 509 flow [2024-06-27 20:49:29,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 71 transitions, 457 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-27 20:49:29,320 INFO L231 Difference]: Finished difference. Result has 115 places, 49 transitions, 289 flow [2024-06-27 20:49:29,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=289, PETRI_PLACES=115, PETRI_TRANSITIONS=49} [2024-06-27 20:49:29,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-27 20:49:29,321 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 49 transitions, 289 flow [2024-06-27 20:49:29,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:29,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:29,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-27 20:49:29,321 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:29,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash -935074238, now seen corresponding path program 31 times [2024-06-27 20:49:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650819754] [2024-06-27 20:49:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:29,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650819754] [2024-06-27 20:49:30,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650819754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:30,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:30,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114947979] [2024-06-27 20:49:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:30,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:30,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:30,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 49 transitions, 289 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:30,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:30,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:30,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:30,868 INFO L124 PetriNetUnfolderBase]: 125/268 cut-off events. [2024-06-27 20:49:30,868 INFO L125 PetriNetUnfolderBase]: For 7772/7772 co-relation queries the response was YES. [2024-06-27 20:49:30,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 268 events. 125/268 cut-off events. For 7772/7772 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 986 event pairs, 31 based on Foata normal form. 6/274 useless extension candidates. Maximal degree in co-relation 924. Up to 146 conditions per place. [2024-06-27 20:49:30,870 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 33 selfloop transitions, 11 changer transitions 19/65 dead transitions. [2024-06-27 20:49:30,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 65 transitions, 449 flow [2024-06-27 20:49:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 20:49:30,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 20:49:30,870 INFO L175 Difference]: Start difference. First operand has 115 places, 49 transitions, 289 flow. Second operand 11 states and 103 transitions. [2024-06-27 20:49:30,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 65 transitions, 449 flow [2024-06-27 20:49:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 65 transitions, 409 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:30,876 INFO L231 Difference]: Finished difference. Result has 106 places, 40 transitions, 234 flow [2024-06-27 20:49:30,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=234, PETRI_PLACES=106, PETRI_TRANSITIONS=40} [2024-06-27 20:49:30,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-27 20:49:30,877 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 40 transitions, 234 flow [2024-06-27 20:49:30,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:30,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:30,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:30,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-27 20:49:30,877 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:30,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1472036214, now seen corresponding path program 32 times [2024-06-27 20:49:30,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:30,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035100098] [2024-06-27 20:49:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:32,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:32,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035100098] [2024-06-27 20:49:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035100098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:32,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:32,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:49:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053574506] [2024-06-27 20:49:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:32,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:49:32,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:49:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:49:32,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:32,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 40 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:32,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:32,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:32,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:32,661 INFO L124 PetriNetUnfolderBase]: 98/215 cut-off events. [2024-06-27 20:49:32,661 INFO L125 PetriNetUnfolderBase]: For 6128/6128 co-relation queries the response was YES. [2024-06-27 20:49:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 215 events. 98/215 cut-off events. For 6128/6128 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 703 event pairs, 27 based on Foata normal form. 6/221 useless extension candidates. Maximal degree in co-relation 750. Up to 120 conditions per place. [2024-06-27 20:49:32,662 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 27 selfloop transitions, 8 changer transitions 20/57 dead transitions. [2024-06-27 20:49:32,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 57 transitions, 380 flow [2024-06-27 20:49:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-27 20:49:32,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28763440860215056 [2024-06-27 20:49:32,662 INFO L175 Difference]: Start difference. First operand has 106 places, 40 transitions, 234 flow. Second operand 12 states and 107 transitions. [2024-06-27 20:49:32,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 57 transitions, 380 flow [2024-06-27 20:49:32,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 57 transitions, 342 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-27 20:49:32,666 INFO L231 Difference]: Finished difference. Result has 93 places, 33 transitions, 183 flow [2024-06-27 20:49:32,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=183, PETRI_PLACES=93, PETRI_TRANSITIONS=33} [2024-06-27 20:49:32,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-27 20:49:32,667 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 33 transitions, 183 flow [2024-06-27 20:49:32,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:32,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:32,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:32,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-27 20:49:32,667 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:32,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1199899222, now seen corresponding path program 33 times [2024-06-27 20:49:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:32,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317796812] [2024-06-27 20:49:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:32,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:33,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:33,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317796812] [2024-06-27 20:49:33,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317796812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:33,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:33,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479953039] [2024-06-27 20:49:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:33,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:33,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:33,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:33,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 33 transitions, 183 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:33,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:34,158 INFO L124 PetriNetUnfolderBase]: 80/177 cut-off events. [2024-06-27 20:49:34,158 INFO L125 PetriNetUnfolderBase]: For 3738/3738 co-relation queries the response was YES. [2024-06-27 20:49:34,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 177 events. 80/177 cut-off events. For 3738/3738 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 528 event pairs, 19 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 602. Up to 68 conditions per place. [2024-06-27 20:49:34,159 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 5 changer transitions 23/48 dead transitions. [2024-06-27 20:49:34,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 48 transitions, 307 flow [2024-06-27 20:49:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-27 20:49:34,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2844574780058651 [2024-06-27 20:49:34,160 INFO L175 Difference]: Start difference. First operand has 93 places, 33 transitions, 183 flow. Second operand 11 states and 97 transitions. [2024-06-27 20:49:34,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 48 transitions, 307 flow [2024-06-27 20:49:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 48 transitions, 277 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 20:49:34,162 INFO L231 Difference]: Finished difference. Result has 80 places, 22 transitions, 118 flow [2024-06-27 20:49:34,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=118, PETRI_PLACES=80, PETRI_TRANSITIONS=22} [2024-06-27 20:49:34,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-27 20:49:34,163 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 22 transitions, 118 flow [2024-06-27 20:49:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:34,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:34,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:34,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-27 20:49:34,163 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:49:34,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash -395640254, now seen corresponding path program 34 times [2024-06-27 20:49:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:34,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930266188] [2024-06-27 20:49:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930266188] [2024-06-27 20:49:35,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930266188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:35,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:35,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:49:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490500135] [2024-06-27 20:49:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:35,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:49:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:49:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:49:35,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:49:35,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 22 transitions, 118 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:35,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:35,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:49:35,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:35,670 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-27 20:49:35,671 INFO L125 PetriNetUnfolderBase]: For 1080/1080 co-relation queries the response was YES. [2024-06-27 20:49:35,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 75 events. 30/75 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 192. Up to 24 conditions per place. [2024-06-27 20:49:35,671 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-27 20:49:35,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 32 transitions, 160 flow [2024-06-27 20:49:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:49:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:49:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 91 transitions. [2024-06-27 20:49:35,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2446236559139785 [2024-06-27 20:49:35,672 INFO L175 Difference]: Start difference. First operand has 80 places, 22 transitions, 118 flow. Second operand 12 states and 91 transitions. [2024-06-27 20:49:35,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 32 transitions, 160 flow [2024-06-27 20:49:35,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-27 20:49:35,672 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-27 20:49:35,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-27 20:49:35,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-27 20:49:35,672 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-27 20:49:35,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:35,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:49:35,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:49:35,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:49:35,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:49:35,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-27 20:49:35,681 INFO L445 BasicCegarLoop]: Path program histogram: [55, 35, 34, 21, 20, 15, 10, 10, 10, 8, 7, 6, 6, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:35,684 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:49:35,684 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:49:35,688 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:49:35,688 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:49:35,689 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:49:35 BasicIcfg [2024-06-27 20:49:35,690 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:49:35,690 INFO L158 Benchmark]: Toolchain (without parser) took 515986.42ms. Allocated memory was 161.5MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 121.4MB in the beginning and 903.0MB in the end (delta: -781.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-27 20:49:35,690 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:49:35,690 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:49:35,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.12ms. Allocated memory is still 161.5MB. Free memory was 121.4MB in the beginning and 88.6MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 20:49:35,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.90ms. Allocated memory is still 161.5MB. Free memory was 88.6MB in the beginning and 85.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:49:35,691 INFO L158 Benchmark]: Boogie Preprocessor took 61.01ms. Allocated memory is still 161.5MB. Free memory was 85.8MB in the beginning and 82.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:49:35,692 INFO L158 Benchmark]: RCFGBuilder took 729.45ms. Allocated memory is still 161.5MB. Free memory was 82.3MB in the beginning and 87.5MB in the end (delta: -5.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-27 20:49:35,692 INFO L158 Benchmark]: TraceAbstraction took 514455.59ms. Allocated memory was 161.5MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 87.5MB in the beginning and 903.0MB in the end (delta: -815.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-06-27 20:49:35,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.12ms. Allocated memory is still 161.5MB. Free memory was 121.4MB in the beginning and 88.6MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.90ms. Allocated memory is still 161.5MB. Free memory was 88.6MB in the beginning and 85.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.01ms. Allocated memory is still 161.5MB. Free memory was 85.8MB in the beginning and 82.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.45ms. Allocated memory is still 161.5MB. Free memory was 82.3MB in the beginning and 87.5MB in the end (delta: -5.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 514455.59ms. Allocated memory was 161.5MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 87.5MB in the beginning and 903.0MB in the end (delta: -815.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 514.3s, OverallIterations: 274, TraceHistogramMax: 1, PathProgramHistogramMax: 55, EmptinessCheckTime: 0.0s, AutomataDifference: 258.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17597 SdHoareTripleChecker+Valid, 63.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14963 mSDsluCounter, 15706 SdHoareTripleChecker+Invalid, 54.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14293 mSDsCounter, 4241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99826 IncrementalHoareTripleChecker+Invalid, 104067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4241 mSolverCounterUnsat, 1413 mSDtfsCounter, 99826 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3047 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3042 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7527 ImplicationChecksByTransitivity, 102.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4117occurred in iteration=119, InterpolantAutomatonStates: 2787, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 252.3s InterpolantComputationTime, 4507 NumberOfCodeBlocks, 4507 NumberOfCodeBlocksAsserted, 274 NumberOfCheckSat, 4233 ConstructedInterpolants, 0 QuantifiedInterpolants, 217187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 274 InterpolantComputations, 274 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 20:49:35,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE