./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.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/rfi000_power.oepc_pso.oepc_rmo.oepc.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/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.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 20:40:33,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:40:33,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:40:33,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:40:33,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:40:33,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:40:33,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:40:33,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:40:33,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:40:33,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:40:33,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:40:33,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:40:33,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:40:33,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:40:33,264 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:40:33,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:40:33,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:40:33,267 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:40:33,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:40:33,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:40:33,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:40:33,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:40:33,268 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:40:33,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:40:33,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:40:33,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:40:33,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:40:33,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:40:33,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:40:33,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:40:33,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:40:33,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:40:33,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:40:33,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:40:33,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:40:33,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:40:33,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:40:33,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:40:33,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:40:33,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:40:33,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:40:33,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:40:33,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:40:33,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:40:33,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:40:33,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:40:33,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:40:33,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:40:33,475 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:40:33,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:40:34,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:40:34,777 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:40:34,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:40:34,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecc7bbed/12a6dd4ac28f4b7ebfebb43b7f2a384f/FLAG9d7aee159 [2024-06-27 20:40:34,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecc7bbed/12a6dd4ac28f4b7ebfebb43b7f2a384f [2024-06-27 20:40:34,812 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:40:34,812 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:40:34,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 20:40:34,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:40:34,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:40:34,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:40:34,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:40:34,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:40:34,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:40:34" (1/2) ... [2024-06-27 20:40:34,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2b573c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:40:34, skipping insertion in model container [2024-06-27 20:40:34,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:40:34" (1/2) ... [2024-06-27 20:40:34,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d2bfde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:40:34, skipping insertion in model container [2024-06-27 20:40:34,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:34" (2/2) ... [2024-06-27 20:40:34,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2b573c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:34, skipping insertion in model container [2024-06-27 20:40:34,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:34" (2/2) ... [2024-06-27 20:40:34,953 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:40:35,006 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:40:35,007 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 20:40:35,007 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 20:40:35,007 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:40:35,008 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 20:40:35,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:40:35,369 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:40:35,379 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:40:35,472 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:40:35,505 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:40:35,506 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:40:35 WrapperNode [2024-06-27 20:40:35,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:40:35,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:40:35,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:40:35,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:40:35,512 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,523 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,544 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-27 20:40:35,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:40:35,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:40:35,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:40:35,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:40:35,553 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,553 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,556 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,567 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 20:40:35,567 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,567 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,574 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,575 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,576 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,577 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:40:35,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:40:35,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:40:35,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:40:35,581 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 08:40:35" (1/1) ... [2024-06-27 20:40:35,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:40:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:40:35,608 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 20:40:35,626 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 20:40:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:40:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:40:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:40:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:40:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:40:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:40:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:40:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:40:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:40:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:40:35,641 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 20:40:35,761 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:40:35,763 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:40:36,053 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:40:36,053 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:40:36,210 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:40:36,210 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:40:36,212 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:40:36 BoogieIcfgContainer [2024-06-27 20:40:36,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:40:36,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:40:36,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:40:36,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:40:36,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:40:34" (1/4) ... [2024-06-27 20:40:36,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4048fc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:40:36, skipping insertion in model container [2024-06-27 20:40:36,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:40:34" (2/4) ... [2024-06-27 20:40:36,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4048fc57 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:40:36, skipping insertion in model container [2024-06-27 20:40:36,218 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 08:40:35" (3/4) ... [2024-06-27 20:40:36,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4048fc57 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:40:36, skipping insertion in model container [2024-06-27 20:40:36,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:40:36" (4/4) ... [2024-06-27 20:40:36,219 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:40:36,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:40:36,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:40:36,231 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:40:36,262 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:40:36,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:40:36,299 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 20:40:36,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:40:36,301 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 39 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 20:40:36,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:40:36,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 20:40:36,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:40:36,313 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;@5ac49e7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:40:36,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:40:36,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:40:36,316 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 20:40:36,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:40:36,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:36,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:40:36,317 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 20:40:36,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash 401809168, now seen corresponding path program 1 times [2024-06-27 20:40:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709803480] [2024-06-27 20:40:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:37,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709803480] [2024-06-27 20:40:37,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709803480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:37,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:37,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:40:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555727930] [2024-06-27 20:40:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:37,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:40:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:40:37,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:40:37,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:40:37,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:37,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:37,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:40:37,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:37,408 INFO L124 PetriNetUnfolderBase]: 216/386 cut-off events. [2024-06-27 20:40:37,409 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 20:40:37,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 386 events. 216/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1364 event pairs, 133 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-27 20:40:37,414 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 20:40:37,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-27 20:40:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:40:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:40:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-27 20:40:37,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-27 20:40:37,425 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-27 20:40:37,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-27 20:40:37,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:40:37,429 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 20:40:37,430 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 20:40:37,434 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 20:40:37,434 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 20:40:37,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:37,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:37,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:37,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:40:37,435 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 20:40:37,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -408414353, now seen corresponding path program 1 times [2024-06-27 20:40:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:37,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609094870] [2024-06-27 20:40:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:37,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:37,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609094870] [2024-06-27 20:40:37,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609094870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:37,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:37,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:40:37,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804892514] [2024-06-27 20:40:37,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:37,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:40:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:40:37,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:40:37,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:40:37,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:37,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:37,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:40:37,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:37,923 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-27 20:40:37,923 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-27 20:40:37,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1357 event pairs, 109 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-27 20:40:37,927 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 20:40:37,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-27 20:40:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:40:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:40:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-27 20:40:37,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 20:40:37,930 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-27 20:40:37,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-27 20:40:37,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:40:37,934 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 20:40:37,935 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 20:40:37,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 20:40:37,936 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 20:40:37,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:37,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:37,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:37,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:40:37,937 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 20:40:37,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash 224058001, now seen corresponding path program 1 times [2024-06-27 20:40:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:37,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260797498] [2024-06-27 20:40:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:38,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:38,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260797498] [2024-06-27 20:40:38,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260797498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:38,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:38,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:40:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257829520] [2024-06-27 20:40:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:38,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:40:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:40:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:40:38,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:40:38,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:38,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:38,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:40:38,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:38,473 INFO L124 PetriNetUnfolderBase]: 214/383 cut-off events. [2024-06-27 20:40:38,474 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-27 20:40:38,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 383 events. 214/383 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 78 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-27 20:40:38,476 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-27 20:40:38,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 253 flow [2024-06-27 20:40:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:40:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:40:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-27 20:40:38,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2024-06-27 20:40:38,478 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 81 transitions. [2024-06-27 20:40:38,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 253 flow [2024-06-27 20:40:38,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:40:38,480 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-27 20:40:38,480 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-27 20:40:38,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 20:40:38,481 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-27 20:40:38,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:38,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:38,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:40:38,482 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 20:40:38,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1283962284, now seen corresponding path program 1 times [2024-06-27 20:40:38,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:38,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610000524] [2024-06-27 20:40:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:38,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610000524] [2024-06-27 20:40:38,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610000524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:38,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:38,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:40:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470043619] [2024-06-27 20:40:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:38,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:40:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:40:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:40:38,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:40:38,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:38,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:38,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:40:38,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:39,096 INFO L124 PetriNetUnfolderBase]: 215/385 cut-off events. [2024-06-27 20:40:39,096 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-06-27 20:40:39,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 385 events. 215/385 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1362 event pairs, 54 based on Foata normal form. 3/386 useless extension candidates. Maximal degree in co-relation 1149. Up to 327 conditions per place. [2024-06-27 20:40:39,098 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-27 20:40:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 338 flow [2024-06-27 20:40:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-27 20:40:39,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-06-27 20:40:39,100 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 95 transitions. [2024-06-27 20:40:39,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 338 flow [2024-06-27 20:40:39,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 334 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 20:40:39,102 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-27 20:40:39,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 20:40:39,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 20:40:39,103 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-27 20:40:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:39,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:39,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:40:39,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:40:39,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash 571408976, now seen corresponding path program 1 times [2024-06-27 20:40:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:39,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318099670] [2024-06-27 20:40:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:39,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:39,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:39,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318099670] [2024-06-27 20:40:39,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318099670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:39,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:39,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142307814] [2024-06-27 20:40:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:39,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:39,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:39,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:40:39,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 20:40:39,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:39,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:40:39,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:39,972 INFO L124 PetriNetUnfolderBase]: 216/388 cut-off events. [2024-06-27 20:40:39,973 INFO L125 PetriNetUnfolderBase]: For 724/724 co-relation queries the response was YES. [2024-06-27 20:40:39,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 388 events. 216/388 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1382 event pairs, 29 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1288. Up to 304 conditions per place. [2024-06-27 20:40:39,974 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-27 20:40:39,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 384 flow [2024-06-27 20:40:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-27 20:40:39,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-06-27 20:40:39,982 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 104 transitions. [2024-06-27 20:40:39,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 384 flow [2024-06-27 20:40:39,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 352 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:39,985 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-27 20:40:39,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-27 20:40:39,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 20:40:39,985 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-27 20:40:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 20:40:39,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:39,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:39,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:40:39,986 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 20:40:39,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash 42354102, now seen corresponding path program 1 times [2024-06-27 20:40:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86575873] [2024-06-27 20:40:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:39,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86575873] [2024-06-27 20:40:40,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86575873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:40,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:40,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:40:40,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810096299] [2024-06-27 20:40:40,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:40:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:40:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:40:40,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:40,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:40,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:40,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:40,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:40,506 INFO L124 PetriNetUnfolderBase]: 214/385 cut-off events. [2024-06-27 20:40:40,507 INFO L125 PetriNetUnfolderBase]: For 861/861 co-relation queries the response was YES. [2024-06-27 20:40:40,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 385 events. 214/385 cut-off events. For 861/861 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1363 event pairs, 56 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1340. Up to 374 conditions per place. [2024-06-27 20:40:40,510 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-27 20:40:40,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 311 flow [2024-06-27 20:40:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:40:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:40:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-27 20:40:40,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:40:40,511 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 55 transitions. [2024-06-27 20:40:40,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 311 flow [2024-06-27 20:40:40,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 270 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:40,513 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-27 20:40:40,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-27 20:40:40,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 20:40:40,514 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-27 20:40:40,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:40,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:40,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:40:40,514 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 20:40:40,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1300956534, now seen corresponding path program 1 times [2024-06-27 20:40:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245548794] [2024-06-27 20:40:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:40,874 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 20:40:40,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:40,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245548794] [2024-06-27 20:40:40,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245548794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:40,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:40,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:40,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699390319] [2024-06-27 20:40:40,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:40,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:40,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:40,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:40,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:40,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:40,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:40,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:41,114 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-27 20:40:41,114 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-27 20:40:41,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 382 events. 212/382 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1352 event pairs, 55 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-27 20:40:41,116 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-27 20:40:41,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 303 flow [2024-06-27 20:40:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-27 20:40:41,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:40:41,118 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 63 transitions. [2024-06-27 20:40:41,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 303 flow [2024-06-27 20:40:41,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 288 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:41,120 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-27 20:40:41,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 20:40:41,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-27 20:40:41,121 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-27 20:40:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:41,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:41,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:40:41,122 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 20:40:41,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1674733077, now seen corresponding path program 1 times [2024-06-27 20:40:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158838552] [2024-06-27 20:40:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:41,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:41,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158838552] [2024-06-27 20:40:41,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158838552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:41,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:41,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:41,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356028909] [2024-06-27 20:40:41,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:41,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:41,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:41,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:41,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:41,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:41,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:41,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:41,641 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-27 20:40:41,642 INFO L125 PetriNetUnfolderBase]: For 1275/1275 co-relation queries the response was YES. [2024-06-27 20:40:41,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 384 events. 213/384 cut-off events. For 1275/1275 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1364 event pairs, 54 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 1381. Up to 339 conditions per place. [2024-06-27 20:40:41,644 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-27 20:40:41,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 362 flow [2024-06-27 20:40:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 20:40:41,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 20:40:41,645 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 71 transitions. [2024-06-27 20:40:41,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 362 flow [2024-06-27 20:40:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:41,647 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-27 20:40:41,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-27 20:40:41,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-27 20:40:41,648 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-27 20:40:41,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:41,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:41,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:41,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:40:41,649 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 20:40:41,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2047827687, now seen corresponding path program 2 times [2024-06-27 20:40:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:41,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678728362] [2024-06-27 20:40:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:41,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:41,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678728362] [2024-06-27 20:40:41,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678728362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:41,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:41,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683606742] [2024-06-27 20:40:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:41,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:41,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:42,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:42,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:42,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:42,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:42,169 INFO L124 PetriNetUnfolderBase]: 208/374 cut-off events. [2024-06-27 20:40:42,169 INFO L125 PetriNetUnfolderBase]: For 1514/1514 co-relation queries the response was YES. [2024-06-27 20:40:42,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 374 events. 208/374 cut-off events. For 1514/1514 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1311 event pairs, 53 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 1402. Up to 360 conditions per place. [2024-06-27 20:40:42,171 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-27 20:40:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 348 flow [2024-06-27 20:40:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-27 20:40:42,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:40:42,172 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 63 transitions. [2024-06-27 20:40:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 348 flow [2024-06-27 20:40:42,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 333 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:42,174 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-27 20:40:42,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-27 20:40:42,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-27 20:40:42,175 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-27 20:40:42,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:42,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:42,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:40:42,176 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 20:40:42,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1674948403, now seen corresponding path program 1 times [2024-06-27 20:40:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:42,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811712820] [2024-06-27 20:40:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:42,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:42,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811712820] [2024-06-27 20:40:42,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811712820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:42,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:42,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:42,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043323912] [2024-06-27 20:40:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:42,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:42,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:42,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:42,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 248 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 20:40:42,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:42,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:42,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:43,003 INFO L124 PetriNetUnfolderBase]: 206/371 cut-off events. [2024-06-27 20:40:43,003 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2024-06-27 20:40:43,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 371 events. 206/371 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1294 event pairs, 52 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1420. Up to 354 conditions per place. [2024-06-27 20:40:43,005 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 39 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-27 20:40:43,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 372 flow [2024-06-27 20:40:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-27 20:40:43,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-27 20:40:43,007 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 71 transitions. [2024-06-27 20:40:43,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 372 flow [2024-06-27 20:40:43,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 338 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:43,010 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 253 flow [2024-06-27 20:40:43,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 20:40:43,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-27 20:40:43,013 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 253 flow [2024-06-27 20:40:43,013 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 20:40:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:43,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:43,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:40:43,014 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 20:40:43,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash 206416887, now seen corresponding path program 1 times [2024-06-27 20:40:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140481048] [2024-06-27 20:40:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:43,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140481048] [2024-06-27 20:40:43,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140481048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:43,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953086834] [2024-06-27 20:40:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:43,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:43,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 253 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 20:40:43,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:43,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:43,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:43,575 INFO L124 PetriNetUnfolderBase]: 221/396 cut-off events. [2024-06-27 20:40:43,575 INFO L125 PetriNetUnfolderBase]: For 2284/2284 co-relation queries the response was YES. [2024-06-27 20:40:43,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 396 events. 221/396 cut-off events. For 2284/2284 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1399 event pairs, 50 based on Foata normal form. 3/397 useless extension candidates. Maximal degree in co-relation 1554. Up to 296 conditions per place. [2024-06-27 20:40:43,577 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 21 changer transitions 0/67 dead transitions. [2024-06-27 20:40:43,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 503 flow [2024-06-27 20:40:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 20:40:43,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-27 20:40:43,579 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 253 flow. Second operand 7 states and 87 transitions. [2024-06-27 20:40:43,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 503 flow [2024-06-27 20:40:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 480 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:43,582 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 341 flow [2024-06-27 20:40:43,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 20:40:43,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-27 20:40:43,583 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 341 flow [2024-06-27 20:40:43,583 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 20:40:43,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:43,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:43,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:40:43,584 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 20:40:43,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash -947868621, now seen corresponding path program 2 times [2024-06-27 20:40:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614672442] [2024-06-27 20:40:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:43,973 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 20:40:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614672442] [2024-06-27 20:40:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614672442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:43,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:43,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195360098] [2024-06-27 20:40:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:44,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:44,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 341 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 20:40:44,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:44,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:44,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:44,177 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-27 20:40:44,177 INFO L125 PetriNetUnfolderBase]: For 2703/2703 co-relation queries the response was YES. [2024-06-27 20:40:44,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 401 events. 224/401 cut-off events. For 2703/2703 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1423 event pairs, 49 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1752. Up to 384 conditions per place. [2024-06-27 20:40:44,179 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-27 20:40:44,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 491 flow [2024-06-27 20:40:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-27 20:40:44,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-27 20:40:44,201 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 341 flow. Second operand 7 states and 71 transitions. [2024-06-27 20:40:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 491 flow [2024-06-27 20:40:44,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 474 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 20:40:44,205 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 367 flow [2024-06-27 20:40:44,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-27 20:40:44,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-27 20:40:44,205 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 367 flow [2024-06-27 20:40:44,205 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 20:40:44,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:44,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:40:44,206 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 20:40:44,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash 383548407, now seen corresponding path program 3 times [2024-06-27 20:40:44,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:44,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5505971] [2024-06-27 20:40:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:44,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:44,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:44,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5505971] [2024-06-27 20:40:44,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5505971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:44,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:44,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533366116] [2024-06-27 20:40:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:44,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:44,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 367 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 20:40:44,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:44,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:44,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:44,817 INFO L124 PetriNetUnfolderBase]: 222/398 cut-off events. [2024-06-27 20:40:44,817 INFO L125 PetriNetUnfolderBase]: For 3170/3170 co-relation queries the response was YES. [2024-06-27 20:40:44,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 398 events. 222/398 cut-off events. For 3170/3170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1421 event pairs, 49 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1799. Up to 375 conditions per place. [2024-06-27 20:40:44,820 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-06-27 20:40:44,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 525 flow [2024-06-27 20:40:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-27 20:40:44,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33640552995391704 [2024-06-27 20:40:44,821 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 367 flow. Second operand 7 states and 73 transitions. [2024-06-27 20:40:44,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 525 flow [2024-06-27 20:40:44,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 500 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:44,824 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 395 flow [2024-06-27 20:40:44,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-27 20:40:44,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-27 20:40:44,826 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 395 flow [2024-06-27 20:40:44,826 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 20:40:44,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:44,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:40:44,826 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 20:40:44,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 383794485, now seen corresponding path program 1 times [2024-06-27 20:40:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825941155] [2024-06-27 20:40:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:44,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:45,548 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 20:40:45,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825941155] [2024-06-27 20:40:45,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825941155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:45,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:45,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:45,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381242585] [2024-06-27 20:40:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:45,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 395 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 20:40:45,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:45,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:45,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:45,854 INFO L124 PetriNetUnfolderBase]: 218/392 cut-off events. [2024-06-27 20:40:45,854 INFO L125 PetriNetUnfolderBase]: For 3643/3643 co-relation queries the response was YES. [2024-06-27 20:40:45,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 392 events. 218/392 cut-off events. For 3643/3643 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1377 event pairs, 47 based on Foata normal form. 2/392 useless extension candidates. Maximal degree in co-relation 1815. Up to 369 conditions per place. [2024-06-27 20:40:45,856 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-27 20:40:45,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 559 flow [2024-06-27 20:40:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 20:40:45,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:40:45,858 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 395 flow. Second operand 8 states and 80 transitions. [2024-06-27 20:40:45,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 559 flow [2024-06-27 20:40:45,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 524 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:45,861 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 405 flow [2024-06-27 20:40:45,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-27 20:40:45,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-27 20:40:45,862 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 405 flow [2024-06-27 20:40:45,862 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 20:40:45,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:45,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:40:45,863 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 20:40:45,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 938226808, now seen corresponding path program 1 times [2024-06-27 20:40:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100187257] [2024-06-27 20:40:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:46,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100187257] [2024-06-27 20:40:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100187257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:46,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:46,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137497377] [2024-06-27 20:40:46,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:46,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:46,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:46,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:46,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:46,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 405 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:46,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:46,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:46,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:46,619 INFO L124 PetriNetUnfolderBase]: 245/441 cut-off events. [2024-06-27 20:40:46,619 INFO L125 PetriNetUnfolderBase]: For 4083/4083 co-relation queries the response was YES. [2024-06-27 20:40:46,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 441 events. 245/441 cut-off events. For 4083/4083 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1618 event pairs, 58 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2081. Up to 390 conditions per place. [2024-06-27 20:40:46,622 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-27 20:40:46,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 706 flow [2024-06-27 20:40:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-27 20:40:46,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-27 20:40:46,623 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 405 flow. Second operand 9 states and 92 transitions. [2024-06-27 20:40:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 706 flow [2024-06-27 20:40:46,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 675 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:46,632 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 574 flow [2024-06-27 20:40:46,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-06-27 20:40:46,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-27 20:40:46,633 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 574 flow [2024-06-27 20:40:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:46,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:46,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:46,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:40:46,634 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 20:40:46,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:46,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1242968317, now seen corresponding path program 1 times [2024-06-27 20:40:46,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:46,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092623573] [2024-06-27 20:40:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092623573] [2024-06-27 20:40:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092623573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606245622] [2024-06-27 20:40:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:47,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:47,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:47,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 574 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:47,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:47,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:47,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:47,346 INFO L124 PetriNetUnfolderBase]: 251/449 cut-off events. [2024-06-27 20:40:47,346 INFO L125 PetriNetUnfolderBase]: For 4812/4814 co-relation queries the response was YES. [2024-06-27 20:40:47,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 449 events. 251/449 cut-off events. For 4812/4814 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1672 event pairs, 51 based on Foata normal form. 4/451 useless extension candidates. Maximal degree in co-relation 2246. Up to 304 conditions per place. [2024-06-27 20:40:47,349 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 36 changer transitions 0/91 dead transitions. [2024-06-27 20:40:47,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 878 flow [2024-06-27 20:40:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 20:40:47,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-27 20:40:47,351 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 574 flow. Second operand 7 states and 89 transitions. [2024-06-27 20:40:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 878 flow [2024-06-27 20:40:47,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 858 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 20:40:47,357 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 659 flow [2024-06-27 20:40:47,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=659, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-06-27 20:40:47,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-27 20:40:47,358 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 659 flow [2024-06-27 20:40:47,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:47,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:47,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:40:47,359 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 20:40:47,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 938380630, now seen corresponding path program 1 times [2024-06-27 20:40:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:47,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448119355] [2024-06-27 20:40:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448119355] [2024-06-27 20:40:47,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448119355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:47,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:47,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634194990] [2024-06-27 20:40:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:47,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:47,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:48,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:48,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 659 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 20:40:48,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:48,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:48,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:48,220 INFO L124 PetriNetUnfolderBase]: 257/460 cut-off events. [2024-06-27 20:40:48,220 INFO L125 PetriNetUnfolderBase]: For 5543/5543 co-relation queries the response was YES. [2024-06-27 20:40:48,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 460 events. 257/460 cut-off events. For 5543/5543 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1723 event pairs, 51 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2418. Up to 338 conditions per place. [2024-06-27 20:40:48,223 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 29 changer transitions 0/96 dead transitions. [2024-06-27 20:40:48,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 987 flow [2024-06-27 20:40:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:40:48,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:40:48,224 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 659 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:40:48,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 987 flow [2024-06-27 20:40:48,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 897 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:48,230 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 699 flow [2024-06-27 20:40:48,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=699, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2024-06-27 20:40:48,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-27 20:40:48,231 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 699 flow [2024-06-27 20:40:48,231 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 20:40:48,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:48,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:40:48,232 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 20:40:48,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash 938380413, now seen corresponding path program 2 times [2024-06-27 20:40:48,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256384901] [2024-06-27 20:40:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:48,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:48,634 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 20:40:48,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256384901] [2024-06-27 20:40:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256384901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:48,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:48,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:48,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196738504] [2024-06-27 20:40:48,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:48,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:48,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:48,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:48,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:48,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:48,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:48,846 INFO L124 PetriNetUnfolderBase]: 260/466 cut-off events. [2024-06-27 20:40:48,846 INFO L125 PetriNetUnfolderBase]: For 6132/6132 co-relation queries the response was YES. [2024-06-27 20:40:48,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 466 events. 260/466 cut-off events. For 6132/6132 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1749 event pairs, 57 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 2510. Up to 316 conditions per place. [2024-06-27 20:40:48,849 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 36 changer transitions 0/95 dead transitions. [2024-06-27 20:40:48,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 95 transitions, 975 flow [2024-06-27 20:40:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 20:40:48,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-27 20:40:48,850 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 699 flow. Second operand 7 states and 83 transitions. [2024-06-27 20:40:48,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 95 transitions, 975 flow [2024-06-27 20:40:48,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 95 transitions, 938 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:48,860 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 762 flow [2024-06-27 20:40:48,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2024-06-27 20:40:48,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-27 20:40:48,861 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 762 flow [2024-06-27 20:40:48,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:48,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:48,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:48,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:40:48,862 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 20:40:48,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:48,862 INFO L85 PathProgramCache]: Analyzing trace with hash 673493684, now seen corresponding path program 2 times [2024-06-27 20:40:48,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:48,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492446687] [2024-06-27 20:40:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:48,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492446687] [2024-06-27 20:40:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492446687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:49,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238289725] [2024-06-27 20:40:49,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:49,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:49,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:49,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 762 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 20:40:49,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:49,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:49,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:49,747 INFO L124 PetriNetUnfolderBase]: 263/471 cut-off events. [2024-06-27 20:40:49,747 INFO L125 PetriNetUnfolderBase]: For 6901/6901 co-relation queries the response was YES. [2024-06-27 20:40:49,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 471 events. 263/471 cut-off events. For 6901/6901 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1767 event pairs, 55 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2651. Up to 433 conditions per place. [2024-06-27 20:40:49,750 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-27 20:40:49,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 1044 flow [2024-06-27 20:40:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:40:49,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:40:49,753 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 762 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:40:49,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 1044 flow [2024-06-27 20:40:49,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 988 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:49,764 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 791 flow [2024-06-27 20:40:49,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2024-06-27 20:40:49,764 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-27 20:40:49,764 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 791 flow [2024-06-27 20:40:49,765 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 20:40:49,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:49,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:49,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:40:49,765 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 20:40:49,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash -987281198, now seen corresponding path program 3 times [2024-06-27 20:40:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:49,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109741397] [2024-06-27 20:40:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:50,338 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 20:40:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109741397] [2024-06-27 20:40:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109741397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366405478] [2024-06-27 20:40:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:50,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:50,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 791 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 20:40:50,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:50,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:50,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:50,621 INFO L124 PetriNetUnfolderBase]: 266/476 cut-off events. [2024-06-27 20:40:50,622 INFO L125 PetriNetUnfolderBase]: For 7705/7705 co-relation queries the response was YES. [2024-06-27 20:40:50,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 476 events. 266/476 cut-off events. For 7705/7705 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1798 event pairs, 55 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 2679. Up to 453 conditions per place. [2024-06-27 20:40:50,624 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-27 20:40:50,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 1021 flow [2024-06-27 20:40:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-27 20:40:50,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-27 20:40:50,626 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 791 flow. Second operand 8 states and 79 transitions. [2024-06-27 20:40:50,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 1021 flow [2024-06-27 20:40:50,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 97 transitions, 993 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 20:40:50,636 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 822 flow [2024-06-27 20:40:50,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-06-27 20:40:50,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-27 20:40:50,636 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 822 flow [2024-06-27 20:40:50,637 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 20:40:50,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:50,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:50,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:40:50,637 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 20:40:50,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash -987548108, now seen corresponding path program 4 times [2024-06-27 20:40:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408953476] [2024-06-27 20:40:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:51,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:51,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408953476] [2024-06-27 20:40:51,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408953476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:51,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:51,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:51,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347712602] [2024-06-27 20:40:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:51,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:51,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:51,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:51,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 822 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 20:40:51,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:51,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:51,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:51,502 INFO L124 PetriNetUnfolderBase]: 264/473 cut-off events. [2024-06-27 20:40:51,502 INFO L125 PetriNetUnfolderBase]: For 8184/8184 co-relation queries the response was YES. [2024-06-27 20:40:51,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 473 events. 264/473 cut-off events. For 8184/8184 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1774 event pairs, 55 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 2691. Up to 447 conditions per place. [2024-06-27 20:40:51,506 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-27 20:40:51,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 1028 flow [2024-06-27 20:40:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 20:40:51,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:40:51,507 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 822 flow. Second operand 8 states and 80 transitions. [2024-06-27 20:40:51,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 1028 flow [2024-06-27 20:40:51,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 97 transitions, 981 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:51,517 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 810 flow [2024-06-27 20:40:51,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=810, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-06-27 20:40:51,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-27 20:40:51,518 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 810 flow [2024-06-27 20:40:51,518 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 20:40:51,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:51,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:51,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:40:51,519 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 20:40:51,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1541503585, now seen corresponding path program 3 times [2024-06-27 20:40:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:51,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513902006] [2024-06-27 20:40:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513902006] [2024-06-27 20:40:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513902006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:51,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:51,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971314089] [2024-06-27 20:40:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:51,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:51,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:51,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 810 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:51,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:51,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:51,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:52,106 INFO L124 PetriNetUnfolderBase]: 262/470 cut-off events. [2024-06-27 20:40:52,106 INFO L125 PetriNetUnfolderBase]: For 8619/8619 co-relation queries the response was YES. [2024-06-27 20:40:52,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 470 events. 262/470 cut-off events. For 8619/8619 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1774 event pairs, 56 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2675. Up to 447 conditions per place. [2024-06-27 20:40:52,109 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 84 selfloop transitions, 12 changer transitions 0/98 dead transitions. [2024-06-27 20:40:52,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 1039 flow [2024-06-27 20:40:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 20:40:52,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-27 20:40:52,110 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 810 flow. Second operand 7 states and 72 transitions. [2024-06-27 20:40:52,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 1039 flow [2024-06-27 20:40:52,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 98 transitions, 994 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:40:52,120 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 821 flow [2024-06-27 20:40:52,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=821, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-06-27 20:40:52,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-27 20:40:52,121 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 821 flow [2024-06-27 20:40:52,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:52,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:52,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:52,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:40:52,121 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 20:40:52,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash 409777612, now seen corresponding path program 2 times [2024-06-27 20:40:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:52,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758673964] [2024-06-27 20:40:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:52,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758673964] [2024-06-27 20:40:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758673964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431562918] [2024-06-27 20:40:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:52,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:52,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:52,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:52,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 821 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:52,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:52,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:52,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:52,966 INFO L124 PetriNetUnfolderBase]: 269/482 cut-off events. [2024-06-27 20:40:52,966 INFO L125 PetriNetUnfolderBase]: For 9387/9387 co-relation queries the response was YES. [2024-06-27 20:40:52,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 482 events. 269/482 cut-off events. For 9387/9387 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1834 event pairs, 47 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2764. Up to 407 conditions per place. [2024-06-27 20:40:52,970 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-27 20:40:52,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 1139 flow [2024-06-27 20:40:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:40:52,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:40:52,971 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 821 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:40:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 1139 flow [2024-06-27 20:40:52,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 1104 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:52,981 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 926 flow [2024-06-27 20:40:52,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=926, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2024-06-27 20:40:52,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-27 20:40:52,982 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 926 flow [2024-06-27 20:40:52,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 20:40:52,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:52,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:52,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:40:52,983 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 20:40:52,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:52,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2125148088, now seen corresponding path program 3 times [2024-06-27 20:40:52,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:52,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508192356] [2024-06-27 20:40:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:52,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508192356] [2024-06-27 20:40:53,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508192356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:53,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699719501] [2024-06-27 20:40:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:53,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:53,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:53,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:40:53,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 926 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:53,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:53,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:40:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:53,605 INFO L124 PetriNetUnfolderBase]: 274/499 cut-off events. [2024-06-27 20:40:53,605 INFO L125 PetriNetUnfolderBase]: For 10719/10719 co-relation queries the response was YES. [2024-06-27 20:40:53,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3009 conditions, 499 events. 274/499 cut-off events. For 10719/10719 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1998 event pairs, 49 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 2957. Up to 336 conditions per place. [2024-06-27 20:40:53,609 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 44 changer transitions 0/126 dead transitions. [2024-06-27 20:40:53,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 126 transitions, 1407 flow [2024-06-27 20:40:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 20:40:53,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-27 20:40:53,611 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 926 flow. Second operand 7 states and 92 transitions. [2024-06-27 20:40:53,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 126 transitions, 1407 flow [2024-06-27 20:40:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 126 transitions, 1337 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:53,627 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 1090 flow [2024-06-27 20:40:53,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1090, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2024-06-27 20:40:53,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-27 20:40:53,627 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 1090 flow [2024-06-27 20:40:53,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:53,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:53,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:40:53,628 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 20:40:53,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash 679848410, now seen corresponding path program 1 times [2024-06-27 20:40:53,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:53,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179999832] [2024-06-27 20:40:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179999832] [2024-06-27 20:40:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179999832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:54,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502407798] [2024-06-27 20:40:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:54,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:54,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 1090 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:54,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:54,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:54,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:54,372 INFO L124 PetriNetUnfolderBase]: 296/528 cut-off events. [2024-06-27 20:40:54,372 INFO L125 PetriNetUnfolderBase]: For 11695/11695 co-relation queries the response was YES. [2024-06-27 20:40:54,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3248 conditions, 528 events. 296/528 cut-off events. For 11695/11695 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2077 event pairs, 30 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 3195. Up to 378 conditions per place. [2024-06-27 20:40:54,376 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 93 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-06-27 20:40:54,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 127 transitions, 1447 flow [2024-06-27 20:40:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 20:40:54,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-27 20:40:54,377 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 1090 flow. Second operand 8 states and 89 transitions. [2024-06-27 20:40:54,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 127 transitions, 1447 flow [2024-06-27 20:40:54,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 127 transitions, 1395 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:54,392 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 1150 flow [2024-06-27 20:40:54,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1150, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2024-06-27 20:40:54,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-27 20:40:54,393 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 1150 flow [2024-06-27 20:40:54,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:54,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:54,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:54,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:40:54,394 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 20:40:54,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash 679908860, now seen corresponding path program 2 times [2024-06-27 20:40:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:54,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914959024] [2024-06-27 20:40:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914959024] [2024-06-27 20:40:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914959024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077972698] [2024-06-27 20:40:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:54,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:55,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:55,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 1150 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:55,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:55,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:55,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:55,225 INFO L124 PetriNetUnfolderBase]: 293/523 cut-off events. [2024-06-27 20:40:55,226 INFO L125 PetriNetUnfolderBase]: For 12056/12056 co-relation queries the response was YES. [2024-06-27 20:40:55,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 523 events. 293/523 cut-off events. For 12056/12056 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2057 event pairs, 46 based on Foata normal form. 2/523 useless extension candidates. Maximal degree in co-relation 3188. Up to 416 conditions per place. [2024-06-27 20:40:55,230 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 86 selfloop transitions, 38 changer transitions 0/126 dead transitions. [2024-06-27 20:40:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 1430 flow [2024-06-27 20:40:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:40:55,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:40:55,240 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 1150 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:40:55,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 1430 flow [2024-06-27 20:40:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 126 transitions, 1355 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:40:55,253 INFO L231 Difference]: Finished difference. Result has 117 places, 113 transitions, 1157 flow [2024-06-27 20:40:55,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1157, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2024-06-27 20:40:55,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-27 20:40:55,255 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 1157 flow [2024-06-27 20:40:55,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:55,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:55,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:55,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:40:55,256 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 20:40:55,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1090441092, now seen corresponding path program 1 times [2024-06-27 20:40:55,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:55,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756216514] [2024-06-27 20:40:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:55,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:55,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756216514] [2024-06-27 20:40:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756216514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:55,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:55,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323036035] [2024-06-27 20:40:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:55,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:55,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:55,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 1157 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:55,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:55,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:55,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:55,985 INFO L124 PetriNetUnfolderBase]: 291/520 cut-off events. [2024-06-27 20:40:55,986 INFO L125 PetriNetUnfolderBase]: For 12237/12237 co-relation queries the response was YES. [2024-06-27 20:40:55,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 520 events. 291/520 cut-off events. For 12237/12237 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2030 event pairs, 54 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 3164. Up to 351 conditions per place. [2024-06-27 20:40:55,990 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 54 changer transitions 0/123 dead transitions. [2024-06-27 20:40:55,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 1475 flow [2024-06-27 20:40:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:40:55,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:40:55,991 INFO L175 Difference]: Start difference. First operand has 117 places, 113 transitions, 1157 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:40:55,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 1475 flow [2024-06-27 20:40:56,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 1373 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:40:56,007 INFO L231 Difference]: Finished difference. Result has 117 places, 113 transitions, 1170 flow [2024-06-27 20:40:56,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1170, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2024-06-27 20:40:56,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-27 20:40:56,008 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 1170 flow [2024-06-27 20:40:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:56,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:56,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:40:56,009 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 20:40:56,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -974976942, now seen corresponding path program 2 times [2024-06-27 20:40:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954018997] [2024-06-27 20:40:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954018997] [2024-06-27 20:40:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954018997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:56,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:56,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:40:56,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860970169] [2024-06-27 20:40:56,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:56,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:40:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:56,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:40:56,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:40:56,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:56,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 1170 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:56,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:56,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:56,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:56,707 INFO L124 PetriNetUnfolderBase]: 287/513 cut-off events. [2024-06-27 20:40:56,708 INFO L125 PetriNetUnfolderBase]: For 12535/12537 co-relation queries the response was YES. [2024-06-27 20:40:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 513 events. 287/513 cut-off events. For 12535/12537 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2013 event pairs, 47 based on Foata normal form. 4/515 useless extension candidates. Maximal degree in co-relation 3106. Up to 380 conditions per place. [2024-06-27 20:40:56,711 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 48 changer transitions 0/128 dead transitions. [2024-06-27 20:40:56,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 128 transitions, 1479 flow [2024-06-27 20:40:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:40:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:40:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 20:40:56,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-27 20:40:56,712 INFO L175 Difference]: Start difference. First operand has 117 places, 113 transitions, 1170 flow. Second operand 7 states and 89 transitions. [2024-06-27 20:40:56,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 128 transitions, 1479 flow [2024-06-27 20:40:56,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1309 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:40:56,726 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 1159 flow [2024-06-27 20:40:56,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1159, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2024-06-27 20:40:56,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-27 20:40:56,726 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 1159 flow [2024-06-27 20:40:56,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:56,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:56,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:56,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:40:56,727 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 20:40:56,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -975149736, now seen corresponding path program 1 times [2024-06-27 20:40:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386525318] [2024-06-27 20:40:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386525318] [2024-06-27 20:40:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386525318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:57,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:57,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:57,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192110934] [2024-06-27 20:40:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:57,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:57,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:57,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 1159 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:57,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:57,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:57,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:57,660 INFO L124 PetriNetUnfolderBase]: 301/537 cut-off events. [2024-06-27 20:40:57,660 INFO L125 PetriNetUnfolderBase]: For 13453/13453 co-relation queries the response was YES. [2024-06-27 20:40:57,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 537 events. 301/537 cut-off events. For 13453/13453 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2109 event pairs, 66 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3270. Up to 438 conditions per place. [2024-06-27 20:40:57,664 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 37 changer transitions 0/136 dead transitions. [2024-06-27 20:40:57,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 136 transitions, 1614 flow [2024-06-27 20:40:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:40:57,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:40:57,669 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 1159 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:40:57,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 136 transitions, 1614 flow [2024-06-27 20:40:57,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 136 transitions, 1481 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:57,685 INFO L231 Difference]: Finished difference. Result has 123 places, 126 transitions, 1272 flow [2024-06-27 20:40:57,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1272, PETRI_PLACES=123, PETRI_TRANSITIONS=126} [2024-06-27 20:40:57,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-27 20:40:57,686 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 126 transitions, 1272 flow [2024-06-27 20:40:57,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:57,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:57,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:57,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:40:57,686 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 20:40:57,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash -974969998, now seen corresponding path program 1 times [2024-06-27 20:40:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:57,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297659469] [2024-06-27 20:40:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:57,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297659469] [2024-06-27 20:40:58,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297659469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:58,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:58,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:40:58,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712906835] [2024-06-27 20:40:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:58,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:40:58,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:40:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:40:58,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:58,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 126 transitions, 1272 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 20:40:58,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:58,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:58,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:58,836 INFO L124 PetriNetUnfolderBase]: 341/603 cut-off events. [2024-06-27 20:40:58,836 INFO L125 PetriNetUnfolderBase]: For 16851/16851 co-relation queries the response was YES. [2024-06-27 20:40:58,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 603 events. 341/603 cut-off events. For 16851/16851 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2441 event pairs, 55 based on Foata normal form. 6/607 useless extension candidates. Maximal degree in co-relation 3652. Up to 251 conditions per place. [2024-06-27 20:40:58,840 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 93 selfloop transitions, 62 changer transitions 0/157 dead transitions. [2024-06-27 20:40:58,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 157 transitions, 1890 flow [2024-06-27 20:40:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 20:40:58,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 20:40:58,842 INFO L175 Difference]: Start difference. First operand has 123 places, 126 transitions, 1272 flow. Second operand 9 states and 118 transitions. [2024-06-27 20:40:58,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 157 transitions, 1890 flow [2024-06-27 20:40:58,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 157 transitions, 1861 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:58,859 INFO L231 Difference]: Finished difference. Result has 130 places, 136 transitions, 1464 flow [2024-06-27 20:40:58,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=130, PETRI_TRANSITIONS=136} [2024-06-27 20:40:58,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-27 20:40:58,859 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 136 transitions, 1464 flow [2024-06-27 20:40:58,860 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 20:40:58,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:58,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:40:58,860 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 20:40:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 798174480, now seen corresponding path program 2 times [2024-06-27 20:40:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856713034] [2024-06-27 20:40:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:59,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856713034] [2024-06-27 20:40:59,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856713034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570410719] [2024-06-27 20:40:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:59,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:59,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:59,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:59,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:59,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:40:59,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 136 transitions, 1464 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:59,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:59,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:40:59,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:59,790 INFO L124 PetriNetUnfolderBase]: 362/637 cut-off events. [2024-06-27 20:40:59,791 INFO L125 PetriNetUnfolderBase]: For 17854/17854 co-relation queries the response was YES. [2024-06-27 20:40:59,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 637 events. 362/637 cut-off events. For 17854/17854 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2635 event pairs, 56 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4223. Up to 369 conditions per place. [2024-06-27 20:40:59,795 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 74 changer transitions 0/161 dead transitions. [2024-06-27 20:40:59,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 161 transitions, 2128 flow [2024-06-27 20:40:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 20:40:59,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 20:40:59,796 INFO L175 Difference]: Start difference. First operand has 130 places, 136 transitions, 1464 flow. Second operand 8 states and 97 transitions. [2024-06-27 20:40:59,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 161 transitions, 2128 flow [2024-06-27 20:40:59,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 161 transitions, 2075 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:59,819 INFO L231 Difference]: Finished difference. Result has 136 places, 149 transitions, 1765 flow [2024-06-27 20:40:59,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1765, PETRI_PLACES=136, PETRI_TRANSITIONS=149} [2024-06-27 20:40:59,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-27 20:40:59,819 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 149 transitions, 1765 flow [2024-06-27 20:40:59,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:59,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:59,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:59,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:40:59,820 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 20:40:59,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -974970246, now seen corresponding path program 3 times [2024-06-27 20:40:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669047816] [2024-06-27 20:40:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:00,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669047816] [2024-06-27 20:41:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669047816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336973432] [2024-06-27 20:41:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:00,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:00,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:00,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 149 transitions, 1765 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:00,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:00,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:00,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:00,740 INFO L124 PetriNetUnfolderBase]: 358/631 cut-off events. [2024-06-27 20:41:00,740 INFO L125 PetriNetUnfolderBase]: For 18613/18613 co-relation queries the response was YES. [2024-06-27 20:41:00,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 631 events. 358/631 cut-off events. For 18613/18613 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2608 event pairs, 56 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 4362. Up to 367 conditions per place. [2024-06-27 20:41:00,745 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 80 changer transitions 0/160 dead transitions. [2024-06-27 20:41:00,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 160 transitions, 2227 flow [2024-06-27 20:41:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 20:41:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:41:00,747 INFO L175 Difference]: Start difference. First operand has 136 places, 149 transitions, 1765 flow. Second operand 8 states and 96 transitions. [2024-06-27 20:41:00,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 160 transitions, 2227 flow [2024-06-27 20:41:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 160 transitions, 2164 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 20:41:00,774 INFO L231 Difference]: Finished difference. Result has 142 places, 149 transitions, 1871 flow [2024-06-27 20:41:00,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1871, PETRI_PLACES=142, PETRI_TRANSITIONS=149} [2024-06-27 20:41:00,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-27 20:41:00,775 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 149 transitions, 1871 flow [2024-06-27 20:41:00,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:00,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:00,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:00,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:41:00,776 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 20:41:00,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 859062578, now seen corresponding path program 2 times [2024-06-27 20:41:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819414798] [2024-06-27 20:41:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:01,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819414798] [2024-06-27 20:41:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819414798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:01,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:01,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:01,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573047803] [2024-06-27 20:41:01,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:01,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:01,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:01,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:01,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:01,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 149 transitions, 1871 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 20:41:01,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:01,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:01,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:01,966 INFO L124 PetriNetUnfolderBase]: 364/641 cut-off events. [2024-06-27 20:41:01,966 INFO L125 PetriNetUnfolderBase]: For 19944/19944 co-relation queries the response was YES. [2024-06-27 20:41:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 641 events. 364/641 cut-off events. For 19944/19944 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2643 event pairs, 66 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 4586. Up to 576 conditions per place. [2024-06-27 20:41:01,970 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 140 selfloop transitions, 23 changer transitions 0/165 dead transitions. [2024-06-27 20:41:01,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 165 transitions, 2333 flow [2024-06-27 20:41:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:41:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:41:01,972 INFO L175 Difference]: Start difference. First operand has 142 places, 149 transitions, 1871 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:41:01,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 165 transitions, 2333 flow [2024-06-27 20:41:02,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 165 transitions, 2191 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:02,003 INFO L231 Difference]: Finished difference. Result has 145 places, 153 transitions, 1832 flow [2024-06-27 20:41:02,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1832, PETRI_PLACES=145, PETRI_TRANSITIONS=153} [2024-06-27 20:41:02,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-27 20:41:02,003 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 153 transitions, 1832 flow [2024-06-27 20:41:02,003 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 20:41:02,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:02,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:41:02,004 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 20:41:02,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 541972392, now seen corresponding path program 4 times [2024-06-27 20:41:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431596466] [2024-06-27 20:41:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431596466] [2024-06-27 20:41:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431596466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:02,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:02,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107912656] [2024-06-27 20:41:02,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:02,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:02,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:02,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 153 transitions, 1832 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:02,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:02,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:02,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:02,853 INFO L124 PetriNetUnfolderBase]: 372/654 cut-off events. [2024-06-27 20:41:02,854 INFO L125 PetriNetUnfolderBase]: For 21047/21047 co-relation queries the response was YES. [2024-06-27 20:41:02,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4717 conditions, 654 events. 372/654 cut-off events. For 21047/21047 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2730 event pairs, 68 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 4647. Up to 618 conditions per place. [2024-06-27 20:41:02,858 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-27 20:41:02,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 165 transitions, 2302 flow [2024-06-27 20:41:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:41:02,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:41:02,859 INFO L175 Difference]: Start difference. First operand has 145 places, 153 transitions, 1832 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:41:02,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 165 transitions, 2302 flow [2024-06-27 20:41:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 165 transitions, 2266 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:02,891 INFO L231 Difference]: Finished difference. Result has 148 places, 157 transitions, 1905 flow [2024-06-27 20:41:02,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1905, PETRI_PLACES=148, PETRI_TRANSITIONS=157} [2024-06-27 20:41:02,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-27 20:41:02,892 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 157 transitions, 1905 flow [2024-06-27 20:41:02,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:02,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:02,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:41:02,893 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 20:41:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -368399190, now seen corresponding path program 5 times [2024-06-27 20:41:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326382615] [2024-06-27 20:41:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326382615] [2024-06-27 20:41:03,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326382615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:03,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:03,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086509379] [2024-06-27 20:41:03,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:03,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:03,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 157 transitions, 1905 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:03,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:03,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:03,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:03,702 INFO L124 PetriNetUnfolderBase]: 370/651 cut-off events. [2024-06-27 20:41:03,702 INFO L125 PetriNetUnfolderBase]: For 21534/21534 co-relation queries the response was YES. [2024-06-27 20:41:03,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 651 events. 370/651 cut-off events. For 21534/21534 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2718 event pairs, 69 based on Foata normal form. 1/650 useless extension candidates. Maximal degree in co-relation 4633. Up to 625 conditions per place. [2024-06-27 20:41:03,707 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 148 selfloop transitions, 14 changer transitions 0/164 dead transitions. [2024-06-27 20:41:03,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 164 transitions, 2245 flow [2024-06-27 20:41:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 20:41:03,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:41:03,708 INFO L175 Difference]: Start difference. First operand has 148 places, 157 transitions, 1905 flow. Second operand 8 states and 80 transitions. [2024-06-27 20:41:03,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 164 transitions, 2245 flow [2024-06-27 20:41:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 164 transitions, 2210 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:03,744 INFO L231 Difference]: Finished difference. Result has 152 places, 157 transitions, 1903 flow [2024-06-27 20:41:03,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1903, PETRI_PLACES=152, PETRI_TRANSITIONS=157} [2024-06-27 20:41:03,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-27 20:41:03,744 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 157 transitions, 1903 flow [2024-06-27 20:41:03,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:03,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:03,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:03,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:41:03,745 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 20:41:03,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash -360058702, now seen corresponding path program 3 times [2024-06-27 20:41:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128692268] [2024-06-27 20:41:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:03,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:04,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:04,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128692268] [2024-06-27 20:41:04,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128692268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:04,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501673658] [2024-06-27 20:41:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:04,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:04,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 157 transitions, 1903 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 20:41:04,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:04,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:04,810 INFO L124 PetriNetUnfolderBase]: 376/661 cut-off events. [2024-06-27 20:41:04,810 INFO L125 PetriNetUnfolderBase]: For 23273/23273 co-relation queries the response was YES. [2024-06-27 20:41:04,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4806 conditions, 661 events. 376/661 cut-off events. For 23273/23273 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2756 event pairs, 66 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4732. Up to 627 conditions per place. [2024-06-27 20:41:04,814 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-06-27 20:41:04,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 169 transitions, 2287 flow [2024-06-27 20:41:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-27 20:41:04,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-27 20:41:04,821 INFO L175 Difference]: Start difference. First operand has 152 places, 157 transitions, 1903 flow. Second operand 9 states and 89 transitions. [2024-06-27 20:41:04,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 169 transitions, 2287 flow [2024-06-27 20:41:04,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 169 transitions, 2220 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:04,859 INFO L231 Difference]: Finished difference. Result has 153 places, 159 transitions, 1903 flow [2024-06-27 20:41:04,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1903, PETRI_PLACES=153, PETRI_TRANSITIONS=159} [2024-06-27 20:41:04,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-27 20:41:04,859 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 159 transitions, 1903 flow [2024-06-27 20:41:04,860 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 20:41:04,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:04,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:41:04,860 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 20:41:04,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash -540944522, now seen corresponding path program 4 times [2024-06-27 20:41:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:04,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9857501] [2024-06-27 20:41:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9857501] [2024-06-27 20:41:05,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9857501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:05,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:05,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:05,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423793773] [2024-06-27 20:41:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:05,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:05,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 159 transitions, 1903 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 20:41:05,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:05,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:05,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:05,860 INFO L124 PetriNetUnfolderBase]: 382/671 cut-off events. [2024-06-27 20:41:05,860 INFO L125 PetriNetUnfolderBase]: For 24727/24727 co-relation queries the response was YES. [2024-06-27 20:41:05,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 671 events. 382/671 cut-off events. For 24727/24727 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2813 event pairs, 66 based on Foata normal form. 2/671 useless extension candidates. Maximal degree in co-relation 4782. Up to 628 conditions per place. [2024-06-27 20:41:05,865 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2024-06-27 20:41:05,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 2299 flow [2024-06-27 20:41:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-27 20:41:05,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-27 20:41:05,885 INFO L175 Difference]: Start difference. First operand has 153 places, 159 transitions, 1903 flow. Second operand 9 states and 92 transitions. [2024-06-27 20:41:05,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 2299 flow [2024-06-27 20:41:05,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 172 transitions, 2254 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:05,926 INFO L231 Difference]: Finished difference. Result has 155 places, 161 transitions, 1935 flow [2024-06-27 20:41:05,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1935, PETRI_PLACES=155, PETRI_TRANSITIONS=161} [2024-06-27 20:41:05,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 20:41:05,927 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 161 transitions, 1935 flow [2024-06-27 20:41:05,927 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 20:41:05,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:05,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:41:05,928 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 20:41:05,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -549218732, now seen corresponding path program 5 times [2024-06-27 20:41:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28945755] [2024-06-27 20:41:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:06,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28945755] [2024-06-27 20:41:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28945755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:06,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:06,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698849177] [2024-06-27 20:41:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:06,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:06,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 161 transitions, 1935 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 20:41:06,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:06,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:06,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:07,036 INFO L124 PetriNetUnfolderBase]: 378/665 cut-off events. [2024-06-27 20:41:07,037 INFO L125 PetriNetUnfolderBase]: For 24662/24662 co-relation queries the response was YES. [2024-06-27 20:41:07,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 665 events. 378/665 cut-off events. For 24662/24662 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2794 event pairs, 65 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 4698. Up to 627 conditions per place. [2024-06-27 20:41:07,041 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-06-27 20:41:07,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 171 transitions, 2295 flow [2024-06-27 20:41:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 20:41:07,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-27 20:41:07,042 INFO L175 Difference]: Start difference. First operand has 155 places, 161 transitions, 1935 flow. Second operand 9 states and 91 transitions. [2024-06-27 20:41:07,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 171 transitions, 2295 flow [2024-06-27 20:41:07,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 171 transitions, 2228 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:07,081 INFO L231 Difference]: Finished difference. Result has 157 places, 161 transitions, 1909 flow [2024-06-27 20:41:07,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1909, PETRI_PLACES=157, PETRI_TRANSITIONS=161} [2024-06-27 20:41:07,081 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-27 20:41:07,081 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 161 transitions, 1909 flow [2024-06-27 20:41:07,082 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 20:41:07,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:07,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:07,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:41:07,082 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 20:41:07,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 541978902, now seen corresponding path program 6 times [2024-06-27 20:41:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694799738] [2024-06-27 20:41:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:07,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694799738] [2024-06-27 20:41:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694799738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531563110] [2024-06-27 20:41:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:07,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 161 transitions, 1909 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:07,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:07,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:07,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:07,850 INFO L124 PetriNetUnfolderBase]: 376/662 cut-off events. [2024-06-27 20:41:07,850 INFO L125 PetriNetUnfolderBase]: For 24174/24174 co-relation queries the response was YES. [2024-06-27 20:41:07,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4693 conditions, 662 events. 376/662 cut-off events. For 24174/24174 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2799 event pairs, 69 based on Foata normal form. 1/661 useless extension candidates. Maximal degree in co-relation 4618. Up to 627 conditions per place. [2024-06-27 20:41:07,855 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 19 changer transitions 0/168 dead transitions. [2024-06-27 20:41:07,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 168 transitions, 2257 flow [2024-06-27 20:41:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-27 20:41:07,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-27 20:41:07,877 INFO L175 Difference]: Start difference. First operand has 157 places, 161 transitions, 1909 flow. Second operand 8 states and 83 transitions. [2024-06-27 20:41:07,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 168 transitions, 2257 flow [2024-06-27 20:41:07,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 168 transitions, 2187 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:07,945 INFO L231 Difference]: Finished difference. Result has 157 places, 161 transitions, 1882 flow [2024-06-27 20:41:07,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1839, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1882, PETRI_PLACES=157, PETRI_TRANSITIONS=161} [2024-06-27 20:41:07,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-27 20:41:07,945 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 161 transitions, 1882 flow [2024-06-27 20:41:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:07,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:07,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:41:07,946 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 20:41:07,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash -199214504, now seen corresponding path program 7 times [2024-06-27 20:41:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593596370] [2024-06-27 20:41:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593596370] [2024-06-27 20:41:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593596370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459835625] [2024-06-27 20:41:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:08,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:08,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:08,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 161 transitions, 1882 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:08,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:08,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:08,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:08,766 INFO L124 PetriNetUnfolderBase]: 400/702 cut-off events. [2024-06-27 20:41:08,766 INFO L125 PetriNetUnfolderBase]: For 27517/27517 co-relation queries the response was YES. [2024-06-27 20:41:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 702 events. 400/702 cut-off events. For 27517/27517 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2964 event pairs, 58 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4920. Up to 418 conditions per place. [2024-06-27 20:41:08,772 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 120 selfloop transitions, 67 changer transitions 0/189 dead transitions. [2024-06-27 20:41:08,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 189 transitions, 2680 flow [2024-06-27 20:41:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 20:41:08,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 20:41:08,793 INFO L175 Difference]: Start difference. First operand has 157 places, 161 transitions, 1882 flow. Second operand 9 states and 114 transitions. [2024-06-27 20:41:08,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 189 transitions, 2680 flow [2024-06-27 20:41:08,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 189 transitions, 2633 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:08,844 INFO L231 Difference]: Finished difference. Result has 161 places, 173 transitions, 2161 flow [2024-06-27 20:41:08,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2161, PETRI_PLACES=161, PETRI_TRANSITIONS=173} [2024-06-27 20:41:08,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-27 20:41:08,846 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 173 transitions, 2161 flow [2024-06-27 20:41:08,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:08,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:08,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:08,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:41:08,846 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 20:41:08,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash -360047790, now seen corresponding path program 1 times [2024-06-27 20:41:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:08,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743545582] [2024-06-27 20:41:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:10,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743545582] [2024-06-27 20:41:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743545582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:10,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:10,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564821472] [2024-06-27 20:41:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:10,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:10,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:10,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:10,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:10,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 173 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 20:41:10,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:10,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:10,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:10,491 INFO L124 PetriNetUnfolderBase]: 397/697 cut-off events. [2024-06-27 20:41:10,492 INFO L125 PetriNetUnfolderBase]: For 27917/27917 co-relation queries the response was YES. [2024-06-27 20:41:10,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5128 conditions, 697 events. 397/697 cut-off events. For 27917/27917 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2921 event pairs, 69 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 5049. Up to 665 conditions per place. [2024-06-27 20:41:10,497 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 14 changer transitions 0/183 dead transitions. [2024-06-27 20:41:10,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 183 transitions, 2545 flow [2024-06-27 20:41:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 20:41:10,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:41:10,502 INFO L175 Difference]: Start difference. First operand has 161 places, 173 transitions, 2161 flow. Second operand 9 states and 87 transitions. [2024-06-27 20:41:10,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 183 transitions, 2545 flow [2024-06-27 20:41:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 183 transitions, 2466 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:10,553 INFO L231 Difference]: Finished difference. Result has 166 places, 173 transitions, 2114 flow [2024-06-27 20:41:10,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2114, PETRI_PLACES=166, PETRI_TRANSITIONS=173} [2024-06-27 20:41:10,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-27 20:41:10,554 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 173 transitions, 2114 flow [2024-06-27 20:41:10,554 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 20:41:10,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:10,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:10,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:41:10,555 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 20:41:10,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -399534288, now seen corresponding path program 1 times [2024-06-27 20:41:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:10,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543492978] [2024-06-27 20:41:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543492978] [2024-06-27 20:41:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543492978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:11,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:11,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:11,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659506629] [2024-06-27 20:41:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:11,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:11,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:11,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 173 transitions, 2114 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:11,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:11,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:11,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:11,293 INFO L124 PetriNetUnfolderBase]: 401/705 cut-off events. [2024-06-27 20:41:11,294 INFO L125 PetriNetUnfolderBase]: For 29112/29112 co-relation queries the response was YES. [2024-06-27 20:41:11,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 705 events. 401/705 cut-off events. For 29112/29112 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3004 event pairs, 43 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 4993. Up to 435 conditions per place. [2024-06-27 20:41:11,299 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 141 selfloop transitions, 44 changer transitions 0/187 dead transitions. [2024-06-27 20:41:11,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 187 transitions, 2600 flow [2024-06-27 20:41:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:41:11,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:41:11,301 INFO L175 Difference]: Start difference. First operand has 166 places, 173 transitions, 2114 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:41:11,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 187 transitions, 2600 flow [2024-06-27 20:41:11,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 187 transitions, 2544 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:11,351 INFO L231 Difference]: Finished difference. Result has 165 places, 174 transitions, 2156 flow [2024-06-27 20:41:11,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2156, PETRI_PLACES=165, PETRI_TRANSITIONS=174} [2024-06-27 20:41:11,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-27 20:41:11,352 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 174 transitions, 2156 flow [2024-06-27 20:41:11,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:11,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:11,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:11,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:41:11,353 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 20:41:11,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash -397656463, now seen corresponding path program 1 times [2024-06-27 20:41:11,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:11,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766597206] [2024-06-27 20:41:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:11,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:11,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:11,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766597206] [2024-06-27 20:41:11,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766597206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:11,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:11,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:11,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405190214] [2024-06-27 20:41:11,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:11,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:11,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:11,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:11,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:11,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 174 transitions, 2156 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:11,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:11,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:11,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:12,144 INFO L124 PetriNetUnfolderBase]: 395/695 cut-off events. [2024-06-27 20:41:12,144 INFO L125 PetriNetUnfolderBase]: For 28872/28872 co-relation queries the response was YES. [2024-06-27 20:41:12,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4998 conditions, 695 events. 395/695 cut-off events. For 28872/28872 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2945 event pairs, 58 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 4920. Up to 413 conditions per place. [2024-06-27 20:41:12,151 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 82 changer transitions 0/186 dead transitions. [2024-06-27 20:41:12,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 186 transitions, 2724 flow [2024-06-27 20:41:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 20:41:12,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 20:41:12,152 INFO L175 Difference]: Start difference. First operand has 165 places, 174 transitions, 2156 flow. Second operand 8 states and 100 transitions. [2024-06-27 20:41:12,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 186 transitions, 2724 flow [2024-06-27 20:41:12,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 186 transitions, 2642 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:12,206 INFO L231 Difference]: Finished difference. Result has 168 places, 175 transitions, 2264 flow [2024-06-27 20:41:12,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2264, PETRI_PLACES=168, PETRI_TRANSITIONS=175} [2024-06-27 20:41:12,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-27 20:41:12,207 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 175 transitions, 2264 flow [2024-06-27 20:41:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:12,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:12,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:12,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:41:12,208 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 20:41:12,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash 469229914, now seen corresponding path program 2 times [2024-06-27 20:41:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690074009] [2024-06-27 20:41:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:12,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:12,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690074009] [2024-06-27 20:41:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690074009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:12,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:12,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:12,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514292114] [2024-06-27 20:41:12,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:12,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:12,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:12,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 175 transitions, 2264 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:12,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:12,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:12,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:12,936 INFO L124 PetriNetUnfolderBase]: 399/703 cut-off events. [2024-06-27 20:41:12,936 INFO L125 PetriNetUnfolderBase]: For 30312/30312 co-relation queries the response was YES. [2024-06-27 20:41:12,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5178 conditions, 703 events. 399/703 cut-off events. For 30312/30312 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3004 event pairs, 55 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 5099. Up to 517 conditions per place. [2024-06-27 20:41:12,942 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 61 changer transitions 0/186 dead transitions. [2024-06-27 20:41:12,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 186 transitions, 2661 flow [2024-06-27 20:41:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:41:12,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:41:12,945 INFO L175 Difference]: Start difference. First operand has 168 places, 175 transitions, 2264 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:41:12,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 186 transitions, 2661 flow [2024-06-27 20:41:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 186 transitions, 2557 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:13,005 INFO L231 Difference]: Finished difference. Result has 170 places, 176 transitions, 2294 flow [2024-06-27 20:41:13,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2294, PETRI_PLACES=170, PETRI_TRANSITIONS=176} [2024-06-27 20:41:13,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 20:41:13,006 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 176 transitions, 2294 flow [2024-06-27 20:41:13,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:13,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:13,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:41:13,007 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 20:41:13,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 469226194, now seen corresponding path program 3 times [2024-06-27 20:41:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536039313] [2024-06-27 20:41:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:13,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536039313] [2024-06-27 20:41:13,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536039313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:13,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:13,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147131018] [2024-06-27 20:41:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:13,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:13,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 176 transitions, 2294 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:13,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:13,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:13,756 INFO L124 PetriNetUnfolderBase]: 410/724 cut-off events. [2024-06-27 20:41:13,756 INFO L125 PetriNetUnfolderBase]: For 33742/33742 co-relation queries the response was YES. [2024-06-27 20:41:13,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5327 conditions, 724 events. 410/724 cut-off events. For 33742/33742 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3144 event pairs, 56 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 5248. Up to 509 conditions per place. [2024-06-27 20:41:13,761 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 57 changer transitions 0/190 dead transitions. [2024-06-27 20:41:13,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 190 transitions, 2798 flow [2024-06-27 20:41:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:41:13,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:41:13,762 INFO L175 Difference]: Start difference. First operand has 170 places, 176 transitions, 2294 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:41:13,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 190 transitions, 2798 flow [2024-06-27 20:41:13,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 190 transitions, 2677 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:13,819 INFO L231 Difference]: Finished difference. Result has 172 places, 178 transitions, 2307 flow [2024-06-27 20:41:13,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2307, PETRI_PLACES=172, PETRI_TRANSITIONS=178} [2024-06-27 20:41:13,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-27 20:41:13,819 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 178 transitions, 2307 flow [2024-06-27 20:41:13,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:13,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:13,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:13,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:41:13,820 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 20:41:13,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash -310814923, now seen corresponding path program 2 times [2024-06-27 20:41:13,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:13,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959300365] [2024-06-27 20:41:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:14,556 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 20:41:14,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:14,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959300365] [2024-06-27 20:41:14,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959300365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:14,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:14,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:14,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724590115] [2024-06-27 20:41:14,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:14,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:14,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:14,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 178 transitions, 2307 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:14,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:14,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:14,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:14,884 INFO L124 PetriNetUnfolderBase]: 416/734 cut-off events. [2024-06-27 20:41:14,885 INFO L125 PetriNetUnfolderBase]: For 35421/35421 co-relation queries the response was YES. [2024-06-27 20:41:14,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5425 conditions, 734 events. 416/734 cut-off events. For 35421/35421 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3202 event pairs, 56 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 5345. Up to 571 conditions per place. [2024-06-27 20:41:14,891 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 64 changer transitions 0/192 dead transitions. [2024-06-27 20:41:14,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 192 transitions, 2761 flow [2024-06-27 20:41:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:41:14,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:41:14,892 INFO L175 Difference]: Start difference. First operand has 172 places, 178 transitions, 2307 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:41:14,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 192 transitions, 2761 flow [2024-06-27 20:41:14,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 192 transitions, 2686 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:14,950 INFO L231 Difference]: Finished difference. Result has 177 places, 182 transitions, 2426 flow [2024-06-27 20:41:14,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2426, PETRI_PLACES=177, PETRI_TRANSITIONS=182} [2024-06-27 20:41:14,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-27 20:41:14,951 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 182 transitions, 2426 flow [2024-06-27 20:41:14,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:14,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:14,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:14,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:41:14,951 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 20:41:14,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:14,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1548080194, now seen corresponding path program 4 times [2024-06-27 20:41:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941348022] [2024-06-27 20:41:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941348022] [2024-06-27 20:41:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941348022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578960605] [2024-06-27 20:41:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:15,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:15,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:15,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:15,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 182 transitions, 2426 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:15,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:15,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:15,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:15,849 INFO L124 PetriNetUnfolderBase]: 413/729 cut-off events. [2024-06-27 20:41:15,849 INFO L125 PetriNetUnfolderBase]: For 34890/34890 co-relation queries the response was YES. [2024-06-27 20:41:15,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 729 events. 413/729 cut-off events. For 34890/34890 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3166 event pairs, 57 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 5393. Up to 535 conditions per place. [2024-06-27 20:41:15,855 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 62 changer transitions 0/193 dead transitions. [2024-06-27 20:41:15,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 193 transitions, 2834 flow [2024-06-27 20:41:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:41:15,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:41:15,856 INFO L175 Difference]: Start difference. First operand has 177 places, 182 transitions, 2426 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:41:15,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 193 transitions, 2834 flow [2024-06-27 20:41:15,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 193 transitions, 2694 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:15,921 INFO L231 Difference]: Finished difference. Result has 179 places, 182 transitions, 2418 flow [2024-06-27 20:41:15,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2418, PETRI_PLACES=179, PETRI_TRANSITIONS=182} [2024-06-27 20:41:15,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-27 20:41:15,922 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 182 transitions, 2418 flow [2024-06-27 20:41:15,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:15,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:15,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:15,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:41:15,923 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 20:41:15,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1548080039, now seen corresponding path program 3 times [2024-06-27 20:41:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589027373] [2024-06-27 20:41:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:15,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:16,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:16,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589027373] [2024-06-27 20:41:16,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589027373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:16,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:16,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:16,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444547895] [2024-06-27 20:41:16,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:16,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:16,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 182 transitions, 2418 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:16,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:16,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:16,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:16,810 INFO L124 PetriNetUnfolderBase]: 415/733 cut-off events. [2024-06-27 20:41:16,811 INFO L125 PetriNetUnfolderBase]: For 34296/34296 co-relation queries the response was YES. [2024-06-27 20:41:16,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5446 conditions, 733 events. 415/733 cut-off events. For 34296/34296 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3210 event pairs, 57 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 5363. Up to 552 conditions per place. [2024-06-27 20:41:16,817 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 72 changer transitions 0/195 dead transitions. [2024-06-27 20:41:16,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 195 transitions, 2897 flow [2024-06-27 20:41:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 20:41:16,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:41:16,819 INFO L175 Difference]: Start difference. First operand has 179 places, 182 transitions, 2418 flow. Second operand 8 states and 94 transitions. [2024-06-27 20:41:16,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 195 transitions, 2897 flow [2024-06-27 20:41:16,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 195 transitions, 2751 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:16,878 INFO L231 Difference]: Finished difference. Result has 180 places, 186 transitions, 2521 flow [2024-06-27 20:41:16,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2521, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2024-06-27 20:41:16,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-27 20:41:16,879 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 2521 flow [2024-06-27 20:41:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:16,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:16,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:16,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:41:16,880 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 20:41:16,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1031909554, now seen corresponding path program 5 times [2024-06-27 20:41:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923809972] [2024-06-27 20:41:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:17,338 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 20:41:17,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:17,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923809972] [2024-06-27 20:41:17,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923809972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:17,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:17,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142279249] [2024-06-27 20:41:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:17,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:17,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:17,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:17,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 2521 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:17,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:17,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:17,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:17,609 INFO L124 PetriNetUnfolderBase]: 419/741 cut-off events. [2024-06-27 20:41:17,609 INFO L125 PetriNetUnfolderBase]: For 35880/35880 co-relation queries the response was YES. [2024-06-27 20:41:17,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5530 conditions, 741 events. 419/741 cut-off events. For 35880/35880 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3243 event pairs, 32 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 5445. Up to 499 conditions per place. [2024-06-27 20:41:17,615 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 137 selfloop transitions, 63 changer transitions 0/202 dead transitions. [2024-06-27 20:41:17,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 202 transitions, 3069 flow [2024-06-27 20:41:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 20:41:17,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:41:17,616 INFO L175 Difference]: Start difference. First operand has 180 places, 186 transitions, 2521 flow. Second operand 8 states and 96 transitions. [2024-06-27 20:41:17,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 202 transitions, 3069 flow [2024-06-27 20:41:17,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 202 transitions, 2896 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:17,678 INFO L231 Difference]: Finished difference. Result has 182 places, 187 transitions, 2487 flow [2024-06-27 20:41:17,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2487, PETRI_PLACES=182, PETRI_TRANSITIONS=187} [2024-06-27 20:41:17,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-27 20:41:17,679 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 187 transitions, 2487 flow [2024-06-27 20:41:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:17,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:17,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:17,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:41:17,679 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 20:41:17,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1031905834, now seen corresponding path program 6 times [2024-06-27 20:41:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531678016] [2024-06-27 20:41:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:18,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531678016] [2024-06-27 20:41:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531678016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:18,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:18,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:18,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087144303] [2024-06-27 20:41:18,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:18,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:18,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:18,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 187 transitions, 2487 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:18,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:18,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:18,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:18,401 INFO L124 PetriNetUnfolderBase]: 423/749 cut-off events. [2024-06-27 20:41:18,401 INFO L125 PetriNetUnfolderBase]: For 37151/37151 co-relation queries the response was YES. [2024-06-27 20:41:18,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 749 events. 423/749 cut-off events. For 37151/37151 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3320 event pairs, 55 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 5475. Up to 557 conditions per place. [2024-06-27 20:41:18,408 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 133 selfloop transitions, 66 changer transitions 0/201 dead transitions. [2024-06-27 20:41:18,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 2937 flow [2024-06-27 20:41:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 20:41:18,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 20:41:18,409 INFO L175 Difference]: Start difference. First operand has 182 places, 187 transitions, 2487 flow. Second operand 8 states and 95 transitions. [2024-06-27 20:41:18,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 2937 flow [2024-06-27 20:41:18,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 201 transitions, 2758 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:18,476 INFO L231 Difference]: Finished difference. Result has 183 places, 188 transitions, 2458 flow [2024-06-27 20:41:18,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2458, PETRI_PLACES=183, PETRI_TRANSITIONS=188} [2024-06-27 20:41:18,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-27 20:41:18,477 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 188 transitions, 2458 flow [2024-06-27 20:41:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:18,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:18,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:18,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:41:18,477 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 20:41:18,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -165019147, now seen corresponding path program 4 times [2024-06-27 20:41:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:18,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183427275] [2024-06-27 20:41:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:19,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183427275] [2024-06-27 20:41:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183427275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:19,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:19,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078118800] [2024-06-27 20:41:19,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:19,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:19,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:19,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:19,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:19,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 188 transitions, 2458 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:19,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:19,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:19,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:19,424 INFO L124 PetriNetUnfolderBase]: 421/746 cut-off events. [2024-06-27 20:41:19,424 INFO L125 PetriNetUnfolderBase]: For 35850/35850 co-relation queries the response was YES. [2024-06-27 20:41:19,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5417 conditions, 746 events. 421/746 cut-off events. For 35850/35850 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3291 event pairs, 52 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 5331. Up to 512 conditions per place. [2024-06-27 20:41:19,430 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 88 changer transitions 0/204 dead transitions. [2024-06-27 20:41:19,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 204 transitions, 3009 flow [2024-06-27 20:41:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 20:41:19,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 20:41:19,435 INFO L175 Difference]: Start difference. First operand has 183 places, 188 transitions, 2458 flow. Second operand 9 states and 110 transitions. [2024-06-27 20:41:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 204 transitions, 3009 flow [2024-06-27 20:41:19,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 204 transitions, 2872 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:19,497 INFO L231 Difference]: Finished difference. Result has 186 places, 188 transitions, 2505 flow [2024-06-27 20:41:19,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2505, PETRI_PLACES=186, PETRI_TRANSITIONS=188} [2024-06-27 20:41:19,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-27 20:41:19,498 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 188 transitions, 2505 flow [2024-06-27 20:41:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:19,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:19,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:41:19,498 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 20:41:19,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1026184102, now seen corresponding path program 1 times [2024-06-27 20:41:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518017665] [2024-06-27 20:41:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518017665] [2024-06-27 20:41:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518017665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:20,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:20,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911087697] [2024-06-27 20:41:20,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:20,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:20,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:20,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 188 transitions, 2505 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:20,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:20,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:20,779 INFO L124 PetriNetUnfolderBase]: 437/772 cut-off events. [2024-06-27 20:41:20,780 INFO L125 PetriNetUnfolderBase]: For 41223/41223 co-relation queries the response was YES. [2024-06-27 20:41:20,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5706 conditions, 772 events. 437/772 cut-off events. For 41223/41223 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3421 event pairs, 49 based on Foata normal form. 2/772 useless extension candidates. Maximal degree in co-relation 5619. Up to 511 conditions per place. [2024-06-27 20:41:20,785 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 67 changer transitions 0/211 dead transitions. [2024-06-27 20:41:20,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 211 transitions, 3218 flow [2024-06-27 20:41:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 20:41:20,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:41:20,786 INFO L175 Difference]: Start difference. First operand has 186 places, 188 transitions, 2505 flow. Second operand 9 states and 108 transitions. [2024-06-27 20:41:20,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 211 transitions, 3218 flow [2024-06-27 20:41:20,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 211 transitions, 2848 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:41:20,854 INFO L231 Difference]: Finished difference. Result has 185 places, 195 transitions, 2356 flow [2024-06-27 20:41:20,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2356, PETRI_PLACES=185, PETRI_TRANSITIONS=195} [2024-06-27 20:41:20,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-27 20:41:20,854 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 195 transitions, 2356 flow [2024-06-27 20:41:20,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:20,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:20,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:20,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:41:20,855 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 20:41:20,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1026399304, now seen corresponding path program 7 times [2024-06-27 20:41:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:20,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642427899] [2024-06-27 20:41:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642427899] [2024-06-27 20:41:21,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642427899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:21,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:21,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665287072] [2024-06-27 20:41:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:21,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:21,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:21,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 195 transitions, 2356 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:21,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:21,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:21,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:21,755 INFO L124 PetriNetUnfolderBase]: 447/790 cut-off events. [2024-06-27 20:41:21,756 INFO L125 PetriNetUnfolderBase]: For 41775/41775 co-relation queries the response was YES. [2024-06-27 20:41:21,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 790 events. 447/790 cut-off events. For 41775/41775 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3551 event pairs, 62 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 5636. Up to 596 conditions per place. [2024-06-27 20:41:21,761 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 141 selfloop transitions, 68 changer transitions 0/211 dead transitions. [2024-06-27 20:41:21,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 211 transitions, 2854 flow [2024-06-27 20:41:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:41:21,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:41:21,762 INFO L175 Difference]: Start difference. First operand has 185 places, 195 transitions, 2356 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:41:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 211 transitions, 2854 flow [2024-06-27 20:41:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 211 transitions, 2830 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 20:41:21,842 INFO L231 Difference]: Finished difference. Result has 192 places, 200 transitions, 2529 flow [2024-06-27 20:41:21,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2529, PETRI_PLACES=192, PETRI_TRANSITIONS=200} [2024-06-27 20:41:21,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 20:41:21,842 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 200 transitions, 2529 flow [2024-06-27 20:41:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:21,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:21,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:21,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:41:21,843 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 20:41:21,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:21,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1026399149, now seen corresponding path program 5 times [2024-06-27 20:41:21,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:21,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961586510] [2024-06-27 20:41:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:21,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961586510] [2024-06-27 20:41:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961586510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506260314] [2024-06-27 20:41:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:22,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:22,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:22,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 200 transitions, 2529 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:22,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:22,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:22,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:22,872 INFO L124 PetriNetUnfolderBase]: 453/800 cut-off events. [2024-06-27 20:41:22,872 INFO L125 PetriNetUnfolderBase]: For 43456/43456 co-relation queries the response was YES. [2024-06-27 20:41:22,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5945 conditions, 800 events. 453/800 cut-off events. For 43456/43456 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3600 event pairs, 53 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5855. Up to 570 conditions per place. [2024-06-27 20:41:22,877 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 127 selfloop transitions, 90 changer transitions 0/219 dead transitions. [2024-06-27 20:41:22,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 219 transitions, 3156 flow [2024-06-27 20:41:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-27 20:41:22,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-27 20:41:22,879 INFO L175 Difference]: Start difference. First operand has 192 places, 200 transitions, 2529 flow. Second operand 8 states and 102 transitions. [2024-06-27 20:41:22,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 219 transitions, 3156 flow [2024-06-27 20:41:22,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 219 transitions, 3059 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:22,946 INFO L231 Difference]: Finished difference. Result has 195 places, 204 transitions, 2664 flow [2024-06-27 20:41:22,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2664, PETRI_PLACES=195, PETRI_TRANSITIONS=204} [2024-06-27 20:41:22,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-27 20:41:22,947 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 204 transitions, 2664 flow [2024-06-27 20:41:22,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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 20:41:22,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:22,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:41:22,947 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 20:41:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1026191759, now seen corresponding path program 6 times [2024-06-27 20:41:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:22,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12459095] [2024-06-27 20:41:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:23,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:23,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12459095] [2024-06-27 20:41:23,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12459095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:23,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:23,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:23,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986640762] [2024-06-27 20:41:23,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:23,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:23,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:23,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 204 transitions, 2664 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:23,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:23,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:23,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:24,023 INFO L124 PetriNetUnfolderBase]: 459/810 cut-off events. [2024-06-27 20:41:24,023 INFO L125 PetriNetUnfolderBase]: For 45482/45482 co-relation queries the response was YES. [2024-06-27 20:41:24,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 810 events. 459/810 cut-off events. For 45482/45482 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3660 event pairs, 70 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 6017. Up to 513 conditions per place. [2024-06-27 20:41:24,030 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 110 changer transitions 0/219 dead transitions. [2024-06-27 20:41:24,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 219 transitions, 3280 flow [2024-06-27 20:41:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:41:24,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:41:24,032 INFO L175 Difference]: Start difference. First operand has 195 places, 204 transitions, 2664 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:41:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 219 transitions, 3280 flow [2024-06-27 20:41:24,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 219 transitions, 3088 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:24,142 INFO L231 Difference]: Finished difference. Result has 198 places, 208 transitions, 2750 flow [2024-06-27 20:41:24,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2750, PETRI_PLACES=198, PETRI_TRANSITIONS=208} [2024-06-27 20:41:24,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 20:41:24,143 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 208 transitions, 2750 flow [2024-06-27 20:41:24,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:24,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:24,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:24,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:41:24,144 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 20:41:24,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1031755949, now seen corresponding path program 7 times [2024-06-27 20:41:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:24,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301267963] [2024-06-27 20:41:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:24,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301267963] [2024-06-27 20:41:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301267963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:24,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466133967] [2024-06-27 20:41:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:24,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:24,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:24,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:24,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 208 transitions, 2750 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:24,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:24,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:24,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:25,104 INFO L124 PetriNetUnfolderBase]: 465/820 cut-off events. [2024-06-27 20:41:25,104 INFO L125 PetriNetUnfolderBase]: For 46973/46973 co-relation queries the response was YES. [2024-06-27 20:41:25,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 820 events. 465/820 cut-off events. For 46973/46973 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3710 event pairs, 58 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 6142. Up to 657 conditions per place. [2024-06-27 20:41:25,111 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 71 changer transitions 0/225 dead transitions. [2024-06-27 20:41:25,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 225 transitions, 3287 flow [2024-06-27 20:41:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:41:25,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:41:25,112 INFO L175 Difference]: Start difference. First operand has 198 places, 208 transitions, 2750 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:41:25,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 225 transitions, 3287 flow [2024-06-27 20:41:25,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 225 transitions, 3123 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:25,198 INFO L231 Difference]: Finished difference. Result has 201 places, 212 transitions, 2794 flow [2024-06-27 20:41:25,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2794, PETRI_PLACES=201, PETRI_TRANSITIONS=212} [2024-06-27 20:41:25,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 20:41:25,199 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 212 transitions, 2794 flow [2024-06-27 20:41:25,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:25,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:25,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:25,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:41:25,200 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 20:41:25,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1031761684, now seen corresponding path program 8 times [2024-06-27 20:41:25,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:25,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445959049] [2024-06-27 20:41:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:25,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445959049] [2024-06-27 20:41:25,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445959049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:25,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526935189] [2024-06-27 20:41:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:25,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:25,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 212 transitions, 2794 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:25,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:25,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:25,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:26,048 INFO L124 PetriNetUnfolderBase]: 472/833 cut-off events. [2024-06-27 20:41:26,048 INFO L125 PetriNetUnfolderBase]: For 49084/49084 co-relation queries the response was YES. [2024-06-27 20:41:26,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6281 conditions, 833 events. 472/833 cut-off events. For 49084/49084 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3798 event pairs, 57 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 6188. Up to 630 conditions per place. [2024-06-27 20:41:26,055 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 154 selfloop transitions, 73 changer transitions 0/229 dead transitions. [2024-06-27 20:41:26,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 229 transitions, 3331 flow [2024-06-27 20:41:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:41:26,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:41:26,057 INFO L175 Difference]: Start difference. First operand has 201 places, 212 transitions, 2794 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:41:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 229 transitions, 3331 flow [2024-06-27 20:41:26,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 229 transitions, 3083 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:26,133 INFO L231 Difference]: Finished difference. Result has 201 places, 215 transitions, 2742 flow [2024-06-27 20:41:26,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2742, PETRI_PLACES=201, PETRI_TRANSITIONS=215} [2024-06-27 20:41:26,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 20:41:26,134 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 215 transitions, 2742 flow [2024-06-27 20:41:26,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:26,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:26,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:26,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:41:26,135 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 20:41:26,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1031755732, now seen corresponding path program 2 times [2024-06-27 20:41:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105306512] [2024-06-27 20:41:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105306512] [2024-06-27 20:41:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105306512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:27,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410358101] [2024-06-27 20:41:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:27,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:27,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:27,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 215 transitions, 2742 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:27,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:27,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:27,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:27,435 INFO L124 PetriNetUnfolderBase]: 478/843 cut-off events. [2024-06-27 20:41:27,435 INFO L125 PetriNetUnfolderBase]: For 50705/50705 co-relation queries the response was YES. [2024-06-27 20:41:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 843 events. 478/843 cut-off events. For 50705/50705 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3849 event pairs, 50 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 6201. Up to 578 conditions per place. [2024-06-27 20:41:27,443 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 75 changer transitions 0/235 dead transitions. [2024-06-27 20:41:27,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 235 transitions, 3393 flow [2024-06-27 20:41:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 20:41:27,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 20:41:27,444 INFO L175 Difference]: Start difference. First operand has 201 places, 215 transitions, 2742 flow. Second operand 9 states and 111 transitions. [2024-06-27 20:41:27,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 235 transitions, 3393 flow [2024-06-27 20:41:27,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 235 transitions, 3278 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:27,530 INFO L231 Difference]: Finished difference. Result has 205 places, 217 transitions, 2807 flow [2024-06-27 20:41:27,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2807, PETRI_PLACES=205, PETRI_TRANSITIONS=217} [2024-06-27 20:41:27,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 20:41:27,531 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 217 transitions, 2807 flow [2024-06-27 20:41:27,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:27,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:27,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:27,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:41:27,532 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 20:41:27,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash -486031712, now seen corresponding path program 3 times [2024-06-27 20:41:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519128134] [2024-06-27 20:41:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:28,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519128134] [2024-06-27 20:41:28,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519128134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:28,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:28,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724509833] [2024-06-27 20:41:28,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:28,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:28,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:28,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:28,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:28,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 217 transitions, 2807 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:28,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:28,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:28,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:28,650 INFO L124 PetriNetUnfolderBase]: 494/869 cut-off events. [2024-06-27 20:41:28,650 INFO L125 PetriNetUnfolderBase]: For 54127/54127 co-relation queries the response was YES. [2024-06-27 20:41:28,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6577 conditions, 869 events. 494/869 cut-off events. For 54127/54127 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3990 event pairs, 65 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6482. Up to 368 conditions per place. [2024-06-27 20:41:28,659 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 113 changer transitions 0/238 dead transitions. [2024-06-27 20:41:28,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 238 transitions, 3587 flow [2024-06-27 20:41:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 20:41:28,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-27 20:41:28,660 INFO L175 Difference]: Start difference. First operand has 205 places, 217 transitions, 2807 flow. Second operand 9 states and 113 transitions. [2024-06-27 20:41:28,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 238 transitions, 3587 flow [2024-06-27 20:41:28,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 238 transitions, 3508 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:28,762 INFO L231 Difference]: Finished difference. Result has 209 places, 221 transitions, 3006 flow [2024-06-27 20:41:28,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3006, PETRI_PLACES=209, PETRI_TRANSITIONS=221} [2024-06-27 20:41:28,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-27 20:41:28,763 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 221 transitions, 3006 flow [2024-06-27 20:41:28,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:28,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:28,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:41:28,763 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 20:41:28,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash -159506820, now seen corresponding path program 4 times [2024-06-27 20:41:28,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:28,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798602520] [2024-06-27 20:41:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798602520] [2024-06-27 20:41:29,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798602520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:29,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:29,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:29,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23139798] [2024-06-27 20:41:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:29,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:29,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:29,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 221 transitions, 3006 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:29,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:29,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:29,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:29,771 INFO L124 PetriNetUnfolderBase]: 490/863 cut-off events. [2024-06-27 20:41:29,771 INFO L125 PetriNetUnfolderBase]: For 53197/53197 co-relation queries the response was YES. [2024-06-27 20:41:29,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6610 conditions, 863 events. 490/863 cut-off events. For 53197/53197 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3972 event pairs, 63 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 6514. Up to 367 conditions per place. [2024-06-27 20:41:29,803 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 107 changer transitions 0/238 dead transitions. [2024-06-27 20:41:29,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 238 transitions, 3744 flow [2024-06-27 20:41:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 20:41:29,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-27 20:41:29,805 INFO L175 Difference]: Start difference. First operand has 209 places, 221 transitions, 3006 flow. Second operand 9 states and 113 transitions. [2024-06-27 20:41:29,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 238 transitions, 3744 flow [2024-06-27 20:41:29,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 238 transitions, 3617 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:29,896 INFO L231 Difference]: Finished difference. Result has 213 places, 221 transitions, 3099 flow [2024-06-27 20:41:29,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3099, PETRI_PLACES=213, PETRI_TRANSITIONS=221} [2024-06-27 20:41:29,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-27 20:41:29,898 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 221 transitions, 3099 flow [2024-06-27 20:41:29,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:29,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:29,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:29,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:41:29,899 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 20:41:29,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash -159507037, now seen corresponding path program 8 times [2024-06-27 20:41:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319456260] [2024-06-27 20:41:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:29,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:30,619 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 20:41:30,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:30,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319456260] [2024-06-27 20:41:30,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319456260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:30,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:30,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483025580] [2024-06-27 20:41:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:30,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:30,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:30,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:30,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 221 transitions, 3099 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:30,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:30,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:30,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:30,952 INFO L124 PetriNetUnfolderBase]: 491/865 cut-off events. [2024-06-27 20:41:30,952 INFO L125 PetriNetUnfolderBase]: For 54058/54058 co-relation queries the response was YES. [2024-06-27 20:41:30,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6647 conditions, 865 events. 491/865 cut-off events. For 54058/54058 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3982 event pairs, 56 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 6550. Up to 702 conditions per place. [2024-06-27 20:41:30,959 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 169 selfloop transitions, 62 changer transitions 0/233 dead transitions. [2024-06-27 20:41:30,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 233 transitions, 3614 flow [2024-06-27 20:41:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:41:30,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:41:30,961 INFO L175 Difference]: Start difference. First operand has 213 places, 221 transitions, 3099 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:41:30,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 233 transitions, 3614 flow [2024-06-27 20:41:31,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 233 transitions, 3443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:31,068 INFO L231 Difference]: Finished difference. Result has 216 places, 223 transitions, 3093 flow [2024-06-27 20:41:31,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3093, PETRI_PLACES=216, PETRI_TRANSITIONS=223} [2024-06-27 20:41:31,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 20:41:31,069 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 223 transitions, 3093 flow [2024-06-27 20:41:31,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:31,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:31,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:31,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:41:31,070 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 20:41:31,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1118858004, now seen corresponding path program 9 times [2024-06-27 20:41:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:31,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547402152] [2024-06-27 20:41:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:31,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547402152] [2024-06-27 20:41:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547402152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:31,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:31,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:31,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811380047] [2024-06-27 20:41:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:31,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:31,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:31,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 223 transitions, 3093 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:31,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:31,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:31,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:31,939 INFO L124 PetriNetUnfolderBase]: 488/860 cut-off events. [2024-06-27 20:41:31,939 INFO L125 PetriNetUnfolderBase]: For 52032/52032 co-relation queries the response was YES. [2024-06-27 20:41:31,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 860 events. 488/860 cut-off events. For 52032/52032 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3941 event pairs, 84 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 6357. Up to 828 conditions per place. [2024-06-27 20:41:31,946 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 215 selfloop transitions, 15 changer transitions 0/232 dead transitions. [2024-06-27 20:41:31,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 232 transitions, 3573 flow [2024-06-27 20:41:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 20:41:31,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3154121863799283 [2024-06-27 20:41:31,948 INFO L175 Difference]: Start difference. First operand has 216 places, 223 transitions, 3093 flow. Second operand 9 states and 88 transitions. [2024-06-27 20:41:31,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 232 transitions, 3573 flow [2024-06-27 20:41:32,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 232 transitions, 3433 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:32,056 INFO L231 Difference]: Finished difference. Result has 218 places, 223 transitions, 2987 flow [2024-06-27 20:41:32,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2987, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2024-06-27 20:41:32,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 20:41:32,057 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 2987 flow [2024-06-27 20:41:32,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:32,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:32,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:41:32,058 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 20:41:32,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1111233492, now seen corresponding path program 5 times [2024-06-27 20:41:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:32,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226893383] [2024-06-27 20:41:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226893383] [2024-06-27 20:41:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226893383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:32,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:32,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622191637] [2024-06-27 20:41:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:32,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:32,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 2987 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:32,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:32,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:32,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:33,063 INFO L124 PetriNetUnfolderBase]: 494/870 cut-off events. [2024-06-27 20:41:33,063 INFO L125 PetriNetUnfolderBase]: For 53227/53227 co-relation queries the response was YES. [2024-06-27 20:41:33,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 870 events. 494/870 cut-off events. For 53227/53227 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4021 event pairs, 82 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 6301. Up to 828 conditions per place. [2024-06-27 20:41:33,070 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 218 selfloop transitions, 16 changer transitions 0/236 dead transitions. [2024-06-27 20:41:33,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 236 transitions, 3502 flow [2024-06-27 20:41:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 20:41:33,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-27 20:41:33,071 INFO L175 Difference]: Start difference. First operand has 218 places, 223 transitions, 2987 flow. Second operand 9 states and 91 transitions. [2024-06-27 20:41:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 236 transitions, 3502 flow [2024-06-27 20:41:33,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 236 transitions, 3299 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:41:33,171 INFO L231 Difference]: Finished difference. Result has 216 places, 225 transitions, 2848 flow [2024-06-27 20:41:33,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2848, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2024-06-27 20:41:33,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 20:41:33,172 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 2848 flow [2024-06-27 20:41:33,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:33,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:33,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:33,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:41:33,172 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 20:41:33,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1111492962, now seen corresponding path program 6 times [2024-06-27 20:41:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:33,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717774043] [2024-06-27 20:41:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717774043] [2024-06-27 20:41:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717774043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:33,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:33,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302781640] [2024-06-27 20:41:33,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:33,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 2848 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:33,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:33,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:34,248 INFO L124 PetriNetUnfolderBase]: 510/896 cut-off events. [2024-06-27 20:41:34,248 INFO L125 PetriNetUnfolderBase]: For 56480/56480 co-relation queries the response was YES. [2024-06-27 20:41:34,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 896 events. 510/896 cut-off events. For 56480/56480 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4172 event pairs, 79 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 6430. Up to 825 conditions per place. [2024-06-27 20:41:34,254 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 23 changer transitions 0/242 dead transitions. [2024-06-27 20:41:34,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 242 transitions, 3530 flow [2024-06-27 20:41:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:41:34,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:41:34,255 INFO L175 Difference]: Start difference. First operand has 216 places, 225 transitions, 2848 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:41:34,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 242 transitions, 3530 flow [2024-06-27 20:41:34,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 242 transitions, 3491 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:34,350 INFO L231 Difference]: Finished difference. Result has 218 places, 229 transitions, 2918 flow [2024-06-27 20:41:34,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2918, PETRI_PLACES=218, PETRI_TRANSITIONS=229} [2024-06-27 20:41:34,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 20:41:34,350 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 229 transitions, 2918 flow [2024-06-27 20:41:34,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:34,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:34,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:34,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:41:34,351 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 20:41:34,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1054867381, now seen corresponding path program 9 times [2024-06-27 20:41:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337727830] [2024-06-27 20:41:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:35,013 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 20:41:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337727830] [2024-06-27 20:41:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337727830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344129100] [2024-06-27 20:41:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:35,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:35,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 229 transitions, 2918 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:35,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:35,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:35,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:35,329 INFO L124 PetriNetUnfolderBase]: 513/901 cut-off events. [2024-06-27 20:41:35,330 INFO L125 PetriNetUnfolderBase]: For 56587/56587 co-relation queries the response was YES. [2024-06-27 20:41:35,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 901 events. 513/901 cut-off events. For 56587/56587 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4188 event pairs, 86 based on Foata normal form. 1/900 useless extension candidates. Maximal degree in co-relation 6513. Up to 863 conditions per place. [2024-06-27 20:41:35,337 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 21 changer transitions 0/239 dead transitions. [2024-06-27 20:41:35,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 239 transitions, 3441 flow [2024-06-27 20:41:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 20:41:35,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-27 20:41:35,340 INFO L175 Difference]: Start difference. First operand has 218 places, 229 transitions, 2918 flow. Second operand 9 states and 91 transitions. [2024-06-27 20:41:35,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 239 transitions, 3441 flow [2024-06-27 20:41:35,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 239 transitions, 3403 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:35,446 INFO L231 Difference]: Finished difference. Result has 222 places, 231 transitions, 2962 flow [2024-06-27 20:41:35,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2880, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2962, PETRI_PLACES=222, PETRI_TRANSITIONS=231} [2024-06-27 20:41:35,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-27 20:41:35,447 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 231 transitions, 2962 flow [2024-06-27 20:41:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:35,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:35,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:35,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:41:35,447 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 20:41:35,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1713878995, now seen corresponding path program 10 times [2024-06-27 20:41:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:35,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126552026] [2024-06-27 20:41:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126552026] [2024-06-27 20:41:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126552026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:36,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619237162] [2024-06-27 20:41:36,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:36,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:36,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:36,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 231 transitions, 2962 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:36,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:36,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:36,482 INFO L124 PetriNetUnfolderBase]: 516/906 cut-off events. [2024-06-27 20:41:36,483 INFO L125 PetriNetUnfolderBase]: For 58264/58264 co-relation queries the response was YES. [2024-06-27 20:41:36,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 906 events. 516/906 cut-off events. For 58264/58264 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4254 event pairs, 87 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 6587. Up to 877 conditions per place. [2024-06-27 20:41:36,490 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 223 selfloop transitions, 16 changer transitions 0/241 dead transitions. [2024-06-27 20:41:36,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 241 transitions, 3493 flow [2024-06-27 20:41:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 20:41:36,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3154121863799283 [2024-06-27 20:41:36,492 INFO L175 Difference]: Start difference. First operand has 222 places, 231 transitions, 2962 flow. Second operand 9 states and 88 transitions. [2024-06-27 20:41:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 241 transitions, 3493 flow [2024-06-27 20:41:36,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 241 transitions, 3440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:36,608 INFO L231 Difference]: Finished difference. Result has 224 places, 233 transitions, 2985 flow [2024-06-27 20:41:36,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2985, PETRI_PLACES=224, PETRI_TRANSITIONS=233} [2024-06-27 20:41:36,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-27 20:41:36,608 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 233 transitions, 2985 flow [2024-06-27 20:41:36,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:36,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:36,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:36,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:41:36,609 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 20:41:36,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1713879212, now seen corresponding path program 7 times [2024-06-27 20:41:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:36,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338027227] [2024-06-27 20:41:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:37,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:37,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338027227] [2024-06-27 20:41:37,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338027227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:37,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:37,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:37,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167114208] [2024-06-27 20:41:37,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:37,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:37,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:37,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:37,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:37,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 233 transitions, 2985 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:37,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:37,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:37,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:37,715 INFO L124 PetriNetUnfolderBase]: 512/900 cut-off events. [2024-06-27 20:41:37,715 INFO L125 PetriNetUnfolderBase]: For 58053/58053 co-relation queries the response was YES. [2024-06-27 20:41:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6551 conditions, 900 events. 512/900 cut-off events. For 58053/58053 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4193 event pairs, 78 based on Foata normal form. 2/900 useless extension candidates. Maximal degree in co-relation 6447. Up to 832 conditions per place. [2024-06-27 20:41:37,722 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 219 selfloop transitions, 24 changer transitions 0/245 dead transitions. [2024-06-27 20:41:37,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 245 transitions, 3497 flow [2024-06-27 20:41:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 20:41:37,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-27 20:41:37,723 INFO L175 Difference]: Start difference. First operand has 224 places, 233 transitions, 2985 flow. Second operand 9 states and 95 transitions. [2024-06-27 20:41:37,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 245 transitions, 3497 flow [2024-06-27 20:41:37,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 245 transitions, 3438 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:37,830 INFO L231 Difference]: Finished difference. Result has 226 places, 233 transitions, 2979 flow [2024-06-27 20:41:37,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2979, PETRI_PLACES=226, PETRI_TRANSITIONS=233} [2024-06-27 20:41:37,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-27 20:41:37,831 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 233 transitions, 2979 flow [2024-06-27 20:41:37,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:37,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:37,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:37,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:41:37,831 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 20:41:37,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1457176892, now seen corresponding path program 8 times [2024-06-27 20:41:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311812348] [2024-06-27 20:41:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:38,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:38,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311812348] [2024-06-27 20:41:38,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311812348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:38,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575991119] [2024-06-27 20:41:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:38,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:38,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:38,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 233 transitions, 2979 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:38,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:38,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:38,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:39,113 INFO L124 PetriNetUnfolderBase]: 518/910 cut-off events. [2024-06-27 20:41:39,113 INFO L125 PetriNetUnfolderBase]: For 59695/59695 co-relation queries the response was YES. [2024-06-27 20:41:39,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 910 events. 518/910 cut-off events. For 59695/59695 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4252 event pairs, 82 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 6528. Up to 844 conditions per place. [2024-06-27 20:41:39,120 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 24 changer transitions 0/248 dead transitions. [2024-06-27 20:41:39,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 248 transitions, 3658 flow [2024-06-27 20:41:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:41:39,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:41:39,122 INFO L175 Difference]: Start difference. First operand has 226 places, 233 transitions, 2979 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:41:39,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 248 transitions, 3658 flow [2024-06-27 20:41:39,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 248 transitions, 3607 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:39,234 INFO L231 Difference]: Finished difference. Result has 227 places, 235 transitions, 3012 flow [2024-06-27 20:41:39,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3012, PETRI_PLACES=227, PETRI_TRANSITIONS=235} [2024-06-27 20:41:39,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-27 20:41:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 235 transitions, 3012 flow [2024-06-27 20:41:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:39,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:39,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:41:39,236 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 20:41:39,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1457386142, now seen corresponding path program 9 times [2024-06-27 20:41:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:39,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084271657] [2024-06-27 20:41:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:39,993 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 20:41:39,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084271657] [2024-06-27 20:41:39,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084271657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:39,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:39,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:39,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501817099] [2024-06-27 20:41:39,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:39,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:39,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:40,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:40,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 235 transitions, 3012 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:40,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:40,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:40,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:40,453 INFO L124 PetriNetUnfolderBase]: 524/920 cut-off events. [2024-06-27 20:41:40,453 INFO L125 PetriNetUnfolderBase]: For 61671/61671 co-relation queries the response was YES. [2024-06-27 20:41:40,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 920 events. 524/920 cut-off events. For 61671/61671 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4313 event pairs, 83 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 6620. Up to 850 conditions per place. [2024-06-27 20:41:40,461 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-27 20:41:40,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 249 transitions, 3697 flow [2024-06-27 20:41:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:41:40,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:41:40,463 INFO L175 Difference]: Start difference. First operand has 227 places, 235 transitions, 3012 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:41:40,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 249 transitions, 3697 flow [2024-06-27 20:41:40,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 249 transitions, 3526 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:40,583 INFO L231 Difference]: Finished difference. Result has 227 places, 237 transitions, 2935 flow [2024-06-27 20:41:40,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2935, PETRI_PLACES=227, PETRI_TRANSITIONS=237} [2024-06-27 20:41:40,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-27 20:41:40,584 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 237 transitions, 2935 flow [2024-06-27 20:41:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:40,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:40,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:41:40,584 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 20:41:40,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1457378702, now seen corresponding path program 10 times [2024-06-27 20:41:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047539661] [2024-06-27 20:41:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:41,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047539661] [2024-06-27 20:41:41,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047539661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839534042] [2024-06-27 20:41:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:41,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:41,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:41,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 237 transitions, 2935 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:41,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:41,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:41,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:41,741 INFO L124 PetriNetUnfolderBase]: 520/914 cut-off events. [2024-06-27 20:41:41,741 INFO L125 PetriNetUnfolderBase]: For 58426/58426 co-relation queries the response was YES. [2024-06-27 20:41:41,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 914 events. 520/914 cut-off events. For 58426/58426 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4302 event pairs, 82 based on Foata normal form. 2/914 useless extension candidates. Maximal degree in co-relation 6353. Up to 847 conditions per place. [2024-06-27 20:41:41,749 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 221 selfloop transitions, 26 changer transitions 0/249 dead transitions. [2024-06-27 20:41:41,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 249 transitions, 3455 flow [2024-06-27 20:41:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:41:41,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:41:41,750 INFO L175 Difference]: Start difference. First operand has 227 places, 237 transitions, 2935 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:41:41,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 249 transitions, 3455 flow [2024-06-27 20:41:41,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 249 transitions, 3385 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:41,892 INFO L231 Difference]: Finished difference. Result has 230 places, 237 transitions, 2922 flow [2024-06-27 20:41:41,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2922, PETRI_PLACES=230, PETRI_TRANSITIONS=237} [2024-06-27 20:41:41,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 20:41:41,892 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 237 transitions, 2922 flow [2024-06-27 20:41:41,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:41,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:41,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:41,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:41:41,893 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 20:41:41,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1457378485, now seen corresponding path program 11 times [2024-06-27 20:41:41,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:41,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105225079] [2024-06-27 20:41:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105225079] [2024-06-27 20:41:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105225079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:42,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:42,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792864832] [2024-06-27 20:41:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:42,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:42,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:42,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 237 transitions, 2922 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:42,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:42,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:42,946 INFO L124 PetriNetUnfolderBase]: 518/911 cut-off events. [2024-06-27 20:41:42,947 INFO L125 PetriNetUnfolderBase]: For 55476/55476 co-relation queries the response was YES. [2024-06-27 20:41:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6360 conditions, 911 events. 518/911 cut-off events. For 55476/55476 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4274 event pairs, 86 based on Foata normal form. 1/910 useless extension candidates. Maximal degree in co-relation 6253. Up to 873 conditions per place. [2024-06-27 20:41:42,955 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 21 changer transitions 0/245 dead transitions. [2024-06-27 20:41:42,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 245 transitions, 3426 flow [2024-06-27 20:41:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 20:41:42,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-27 20:41:42,959 INFO L175 Difference]: Start difference. First operand has 230 places, 237 transitions, 2922 flow. Second operand 9 states and 91 transitions. [2024-06-27 20:41:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 245 transitions, 3426 flow [2024-06-27 20:41:43,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 245 transitions, 3356 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:43,081 INFO L231 Difference]: Finished difference. Result has 230 places, 237 transitions, 2899 flow [2024-06-27 20:41:43,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2899, PETRI_PLACES=230, PETRI_TRANSITIONS=237} [2024-06-27 20:41:43,081 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 20:41:43,082 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 237 transitions, 2899 flow [2024-06-27 20:41:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 20:41:43,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:43,082 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 20:41:43,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:41:43,082 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 20:41:43,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1603019189, now seen corresponding path program 1 times [2024-06-27 20:41:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502401999] [2024-06-27 20:41:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502401999] [2024-06-27 20:41:43,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502401999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:43,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351468696] [2024-06-27 20:41:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:43,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:43,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 237 transitions, 2899 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:43,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:43,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:43,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:44,067 INFO L124 PetriNetUnfolderBase]: 578/1031 cut-off events. [2024-06-27 20:41:44,067 INFO L125 PetriNetUnfolderBase]: For 63997/63997 co-relation queries the response was YES. [2024-06-27 20:41:44,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 1031 events. 578/1031 cut-off events. For 63997/63997 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5170 event pairs, 118 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 6723. Up to 697 conditions per place. [2024-06-27 20:41:44,076 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 209 selfloop transitions, 55 changer transitions 0/266 dead transitions. [2024-06-27 20:41:44,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 266 transitions, 3668 flow [2024-06-27 20:41:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:41:44,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:41:44,077 INFO L175 Difference]: Start difference. First operand has 230 places, 237 transitions, 2899 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:41:44,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 266 transitions, 3668 flow [2024-06-27 20:41:44,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 266 transitions, 3476 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:44,200 INFO L231 Difference]: Finished difference. Result has 234 places, 242 transitions, 2885 flow [2024-06-27 20:41:44,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2885, PETRI_PLACES=234, PETRI_TRANSITIONS=242} [2024-06-27 20:41:44,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-27 20:41:44,201 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 242 transitions, 2885 flow [2024-06-27 20:41:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:44,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:44,201 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 20:41:44,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:41:44,201 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 20:41:44,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1661111639, now seen corresponding path program 2 times [2024-06-27 20:41:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:44,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947915257] [2024-06-27 20:41:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:44,757 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 20:41:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947915257] [2024-06-27 20:41:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947915257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:44,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681218077] [2024-06-27 20:41:44,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:44,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:44,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:44,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 242 transitions, 2885 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:44,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:44,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:44,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:45,146 INFO L124 PetriNetUnfolderBase]: 589/1052 cut-off events. [2024-06-27 20:41:45,146 INFO L125 PetriNetUnfolderBase]: For 70288/70288 co-relation queries the response was YES. [2024-06-27 20:41:45,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 1052 events. 589/1052 cut-off events. For 70288/70288 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5319 event pairs, 127 based on Foata normal form. 2/1052 useless extension candidates. Maximal degree in co-relation 7005. Up to 822 conditions per place. [2024-06-27 20:41:45,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 199 selfloop transitions, 60 changer transitions 0/261 dead transitions. [2024-06-27 20:41:45,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 261 transitions, 3611 flow [2024-06-27 20:41:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:41:45,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:41:45,165 INFO L175 Difference]: Start difference. First operand has 234 places, 242 transitions, 2885 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:41:45,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 261 transitions, 3611 flow [2024-06-27 20:41:45,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 261 transitions, 3533 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:45,326 INFO L231 Difference]: Finished difference. Result has 242 places, 246 transitions, 2978 flow [2024-06-27 20:41:45,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2978, PETRI_PLACES=242, PETRI_TRANSITIONS=246} [2024-06-27 20:41:45,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-27 20:41:45,326 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 246 transitions, 2978 flow [2024-06-27 20:41:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:45,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:45,327 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 20:41:45,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:41:45,327 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 20:41:45,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash 557552893, now seen corresponding path program 3 times [2024-06-27 20:41:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:45,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665417980] [2024-06-27 20:41:45,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:45,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:45,970 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 20:41:45,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:45,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665417980] [2024-06-27 20:41:45,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665417980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:45,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:45,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:45,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830982415] [2024-06-27 20:41:45,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:45,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:45,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:46,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:46,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 246 transitions, 2978 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:46,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:46,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:46,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:46,420 INFO L124 PetriNetUnfolderBase]: 597/1068 cut-off events. [2024-06-27 20:41:46,420 INFO L125 PetriNetUnfolderBase]: For 77352/77352 co-relation queries the response was YES. [2024-06-27 20:41:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1068 events. 597/1068 cut-off events. For 77352/77352 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5433 event pairs, 89 based on Foata normal form. 4/1070 useless extension candidates. Maximal degree in co-relation 7206. Up to 753 conditions per place. [2024-06-27 20:41:46,429 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 144 selfloop transitions, 113 changer transitions 0/259 dead transitions. [2024-06-27 20:41:46,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 259 transitions, 3538 flow [2024-06-27 20:41:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:41:46,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:41:46,430 INFO L175 Difference]: Start difference. First operand has 242 places, 246 transitions, 2978 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:41:46,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 259 transitions, 3538 flow [2024-06-27 20:41:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 259 transitions, 3480 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:46,616 INFO L231 Difference]: Finished difference. Result has 247 places, 248 transitions, 3176 flow [2024-06-27 20:41:46,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3176, PETRI_PLACES=247, PETRI_TRANSITIONS=248} [2024-06-27 20:41:46,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-27 20:41:46,617 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 248 transitions, 3176 flow [2024-06-27 20:41:46,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:46,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:46,617 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 20:41:46,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:41:46,617 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 20:41:46,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 557548243, now seen corresponding path program 4 times [2024-06-27 20:41:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267116530] [2024-06-27 20:41:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267116530] [2024-06-27 20:41:47,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267116530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:47,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095310414] [2024-06-27 20:41:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:47,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:47,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:47,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 248 transitions, 3176 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:47,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:47,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:47,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:47,460 INFO L124 PetriNetUnfolderBase]: 605/1084 cut-off events. [2024-06-27 20:41:47,460 INFO L125 PetriNetUnfolderBase]: For 79623/79623 co-relation queries the response was YES. [2024-06-27 20:41:47,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7679 conditions, 1084 events. 605/1084 cut-off events. For 79623/79623 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5540 event pairs, 89 based on Foata normal form. 4/1086 useless extension candidates. Maximal degree in co-relation 7561. Up to 741 conditions per place. [2024-06-27 20:41:47,470 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 112 changer transitions 0/262 dead transitions. [2024-06-27 20:41:47,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 262 transitions, 3748 flow [2024-06-27 20:41:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:41:47,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:41:47,475 INFO L175 Difference]: Start difference. First operand has 247 places, 248 transitions, 3176 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:41:47,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 262 transitions, 3748 flow [2024-06-27 20:41:47,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 262 transitions, 3518 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:47,641 INFO L231 Difference]: Finished difference. Result has 249 places, 250 transitions, 3203 flow [2024-06-27 20:41:47,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3203, PETRI_PLACES=249, PETRI_TRANSITIONS=250} [2024-06-27 20:41:47,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 20:41:47,642 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 250 transitions, 3203 flow [2024-06-27 20:41:47,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:47,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:47,643 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 20:41:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:41:47,643 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 20:41:47,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1045319967, now seen corresponding path program 1 times [2024-06-27 20:41:47,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:47,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655168327] [2024-06-27 20:41:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:48,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:48,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655168327] [2024-06-27 20:41:48,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655168327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:48,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:48,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801857811] [2024-06-27 20:41:48,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:48,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:48,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:48,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:48,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 250 transitions, 3203 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 20:41:48,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:48,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:48,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:49,266 INFO L124 PetriNetUnfolderBase]: 611/1094 cut-off events. [2024-06-27 20:41:49,267 INFO L125 PetriNetUnfolderBase]: For 76952/76952 co-relation queries the response was YES. [2024-06-27 20:41:49,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7758 conditions, 1094 events. 611/1094 cut-off events. For 76952/76952 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5608 event pairs, 72 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 7639. Up to 803 conditions per place. [2024-06-27 20:41:49,277 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 78 changer transitions 0/267 dead transitions. [2024-06-27 20:41:49,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 267 transitions, 3785 flow [2024-06-27 20:41:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:41:49,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:41:49,278 INFO L175 Difference]: Start difference. First operand has 249 places, 250 transitions, 3203 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:41:49,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 267 transitions, 3785 flow [2024-06-27 20:41:49,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 267 transitions, 3552 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:49,471 INFO L231 Difference]: Finished difference. Result has 252 places, 252 transitions, 3153 flow [2024-06-27 20:41:49,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3153, PETRI_PLACES=252, PETRI_TRANSITIONS=252} [2024-06-27 20:41:49,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 20:41:49,472 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 252 transitions, 3153 flow [2024-06-27 20:41:49,472 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 20:41:49,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:49,473 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 20:41:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:41:49,473 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 20:41:49,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1045326663, now seen corresponding path program 5 times [2024-06-27 20:41:49,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627115278] [2024-06-27 20:41:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:50,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:50,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627115278] [2024-06-27 20:41:50,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627115278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:50,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122879088] [2024-06-27 20:41:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:50,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:50,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:50,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 252 transitions, 3153 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 20:41:50,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:50,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:50,657 INFO L124 PetriNetUnfolderBase]: 619/1110 cut-off events. [2024-06-27 20:41:50,657 INFO L125 PetriNetUnfolderBase]: For 84202/84202 co-relation queries the response was YES. [2024-06-27 20:41:50,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 1110 events. 619/1110 cut-off events. For 84202/84202 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5705 event pairs, 93 based on Foata normal form. 4/1112 useless extension candidates. Maximal degree in co-relation 7701. Up to 783 conditions per place. [2024-06-27 20:41:50,668 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 115 changer transitions 0/266 dead transitions. [2024-06-27 20:41:50,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 266 transitions, 3737 flow [2024-06-27 20:41:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 20:41:50,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 20:41:50,669 INFO L175 Difference]: Start difference. First operand has 252 places, 252 transitions, 3153 flow. Second operand 10 states and 114 transitions. [2024-06-27 20:41:50,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 266 transitions, 3737 flow [2024-06-27 20:41:50,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 3520 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:50,883 INFO L231 Difference]: Finished difference. Result has 253 places, 254 transitions, 3208 flow [2024-06-27 20:41:50,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3208, PETRI_PLACES=253, PETRI_TRANSITIONS=254} [2024-06-27 20:41:50,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-27 20:41:50,884 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 254 transitions, 3208 flow [2024-06-27 20:41:50,884 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 20:41:50,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:50,885 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 20:41:50,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:41:50,885 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 20:41:50,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1045326477, now seen corresponding path program 2 times [2024-06-27 20:41:50,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:50,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758479759] [2024-06-27 20:41:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:50,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758479759] [2024-06-27 20:41:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758479759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:51,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:51,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799760095] [2024-06-27 20:41:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:51,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:51,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:51,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:51,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 254 transitions, 3208 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 20:41:51,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:51,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:52,400 INFO L124 PetriNetUnfolderBase]: 625/1120 cut-off events. [2024-06-27 20:41:52,401 INFO L125 PetriNetUnfolderBase]: For 80961/80961 co-relation queries the response was YES. [2024-06-27 20:41:52,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7928 conditions, 1120 events. 625/1120 cut-off events. For 80961/80961 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5763 event pairs, 75 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 7807. Up to 815 conditions per place. [2024-06-27 20:41:52,412 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 82 changer transitions 0/272 dead transitions. [2024-06-27 20:41:52,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 272 transitions, 3806 flow [2024-06-27 20:41:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:41:52,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 20:41:52,419 INFO L175 Difference]: Start difference. First operand has 253 places, 254 transitions, 3208 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:41:52,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 272 transitions, 3806 flow [2024-06-27 20:41:52,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 272 transitions, 3566 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:52,631 INFO L231 Difference]: Finished difference. Result has 255 places, 256 transitions, 3164 flow [2024-06-27 20:41:52,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=255, PETRI_TRANSITIONS=256} [2024-06-27 20:41:52,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 20:41:52,632 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 256 transitions, 3164 flow [2024-06-27 20:41:52,632 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 20:41:52,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:52,632 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 20:41:52,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:41:52,632 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 20:41:52,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1045504293, now seen corresponding path program 6 times [2024-06-27 20:41:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:52,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67093025] [2024-06-27 20:41:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:53,256 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 20:41:53,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67093025] [2024-06-27 20:41:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67093025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:53,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:53,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631897804] [2024-06-27 20:41:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:53,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:53,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:53,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:53,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 256 transitions, 3164 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:53,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:53,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:53,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:53,757 INFO L124 PetriNetUnfolderBase]: 648/1165 cut-off events. [2024-06-27 20:41:53,758 INFO L125 PetriNetUnfolderBase]: For 91725/91725 co-relation queries the response was YES. [2024-06-27 20:41:53,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 1165 events. 648/1165 cut-off events. For 91725/91725 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6083 event pairs, 82 based on Foata normal form. 4/1167 useless extension candidates. Maximal degree in co-relation 8095. Up to 914 conditions per place. [2024-06-27 20:41:53,768 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 79 changer transitions 0/274 dead transitions. [2024-06-27 20:41:53,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 274 transitions, 3944 flow [2024-06-27 20:41:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 20:41:53,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:41:53,769 INFO L175 Difference]: Start difference. First operand has 255 places, 256 transitions, 3164 flow. Second operand 9 states and 105 transitions. [2024-06-27 20:41:53,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 274 transitions, 3944 flow [2024-06-27 20:41:54,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 274 transitions, 3772 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:54,010 INFO L231 Difference]: Finished difference. Result has 257 places, 261 transitions, 3234 flow [2024-06-27 20:41:54,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3234, PETRI_PLACES=257, PETRI_TRANSITIONS=261} [2024-06-27 20:41:54,010 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 20:41:54,010 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 261 transitions, 3234 flow [2024-06-27 20:41:54,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:54,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:54,011 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 20:41:54,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:41:54,011 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 20:41:54,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1045499643, now seen corresponding path program 7 times [2024-06-27 20:41:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:54,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470793383] [2024-06-27 20:41:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:54,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:54,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470793383] [2024-06-27 20:41:54,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470793383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:54,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:54,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309230413] [2024-06-27 20:41:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:54,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:54,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:54,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 261 transitions, 3234 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:54,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:54,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:54,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:55,053 INFO L124 PetriNetUnfolderBase]: 642/1155 cut-off events. [2024-06-27 20:41:55,053 INFO L125 PetriNetUnfolderBase]: For 83245/83245 co-relation queries the response was YES. [2024-06-27 20:41:55,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 1155 events. 642/1155 cut-off events. For 83245/83245 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6062 event pairs, 82 based on Foata normal form. 4/1157 useless extension candidates. Maximal degree in co-relation 7795. Up to 962 conditions per place. [2024-06-27 20:41:55,064 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 74 changer transitions 0/272 dead transitions. [2024-06-27 20:41:55,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 272 transitions, 3800 flow [2024-06-27 20:41:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:41:55,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:41:55,065 INFO L175 Difference]: Start difference. First operand has 257 places, 261 transitions, 3234 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:41:55,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 272 transitions, 3800 flow [2024-06-27 20:41:55,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 272 transitions, 3666 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:55,278 INFO L231 Difference]: Finished difference. Result has 259 places, 261 transitions, 3254 flow [2024-06-27 20:41:55,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3254, PETRI_PLACES=259, PETRI_TRANSITIONS=261} [2024-06-27 20:41:55,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 20:41:55,279 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 261 transitions, 3254 flow [2024-06-27 20:41:55,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:55,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:55,279 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 20:41:55,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:41:55,279 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 20:41:55,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1045499457, now seen corresponding path program 3 times [2024-06-27 20:41:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:55,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570517809] [2024-06-27 20:41:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:55,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:56,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570517809] [2024-06-27 20:41:56,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570517809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:56,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:56,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207292295] [2024-06-27 20:41:56,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:56,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:56,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 261 transitions, 3254 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 20:41:56,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:56,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:56,867 INFO L124 PetriNetUnfolderBase]: 638/1149 cut-off events. [2024-06-27 20:41:56,867 INFO L125 PetriNetUnfolderBase]: For 73472/73472 co-relation queries the response was YES. [2024-06-27 20:41:56,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7800 conditions, 1149 events. 638/1149 cut-off events. For 73472/73472 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5998 event pairs, 87 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 7676. Up to 608 conditions per place. [2024-06-27 20:41:56,877 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 116 changer transitions 0/280 dead transitions. [2024-06-27 20:41:56,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 280 transitions, 4004 flow [2024-06-27 20:41:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:41:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:41:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:41:56,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:41:56,879 INFO L175 Difference]: Start difference. First operand has 259 places, 261 transitions, 3254 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:41:56,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 280 transitions, 4004 flow [2024-06-27 20:41:57,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 280 transitions, 3852 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:57,094 INFO L231 Difference]: Finished difference. Result has 264 places, 261 transitions, 3340 flow [2024-06-27 20:41:57,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3340, PETRI_PLACES=264, PETRI_TRANSITIONS=261} [2024-06-27 20:41:57,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 20:41:57,095 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 261 transitions, 3340 flow [2024-06-27 20:41:57,095 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 20:41:57,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:57,095 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 20:41:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:41:57,096 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 20:41:57,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:57,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1924423589, now seen corresponding path program 8 times [2024-06-27 20:41:57,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:57,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89117020] [2024-06-27 20:41:57,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89117020] [2024-06-27 20:41:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89117020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:57,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202151406] [2024-06-27 20:41:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:57,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:57,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:57,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 261 transitions, 3340 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:57,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:57,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:57,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:58,074 INFO L124 PetriNetUnfolderBase]: 653/1180 cut-off events. [2024-06-27 20:41:58,074 INFO L125 PetriNetUnfolderBase]: For 87544/87544 co-relation queries the response was YES. [2024-06-27 20:41:58,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8232 conditions, 1180 events. 653/1180 cut-off events. For 87544/87544 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6235 event pairs, 62 based on Foata normal form. 4/1182 useless extension candidates. Maximal degree in co-relation 8107. Up to 687 conditions per place. [2024-06-27 20:41:58,086 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 111 changer transitions 0/281 dead transitions. [2024-06-27 20:41:58,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 281 transitions, 4141 flow [2024-06-27 20:41:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 20:41:58,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:41:58,087 INFO L175 Difference]: Start difference. First operand has 264 places, 261 transitions, 3340 flow. Second operand 9 states and 108 transitions. [2024-06-27 20:41:58,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 281 transitions, 4141 flow [2024-06-27 20:41:58,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 281 transitions, 3778 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:41:58,312 INFO L231 Difference]: Finished difference. Result has 261 places, 264 transitions, 3247 flow [2024-06-27 20:41:58,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3247, PETRI_PLACES=261, PETRI_TRANSITIONS=264} [2024-06-27 20:41:58,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-27 20:41:58,313 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 264 transitions, 3247 flow [2024-06-27 20:41:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:58,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:58,313 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 20:41:58,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:41:58,313 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 20:41:58,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1924308269, now seen corresponding path program 9 times [2024-06-27 20:41:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:58,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916450152] [2024-06-27 20:41:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:58,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:58,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916450152] [2024-06-27 20:41:58,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916450152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:58,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:58,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271466112] [2024-06-27 20:41:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:58,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:58,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:58,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:41:58,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 264 transitions, 3247 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:58,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:58,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:41:58,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:59,312 INFO L124 PetriNetUnfolderBase]: 675/1222 cut-off events. [2024-06-27 20:41:59,312 INFO L125 PetriNetUnfolderBase]: For 102057/102057 co-relation queries the response was YES. [2024-06-27 20:41:59,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8596 conditions, 1222 events. 675/1222 cut-off events. For 102057/102057 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6551 event pairs, 99 based on Foata normal form. 4/1224 useless extension candidates. Maximal degree in co-relation 8471. Up to 871 conditions per place. [2024-06-27 20:41:59,324 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 116 changer transitions 0/284 dead transitions. [2024-06-27 20:41:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 4071 flow [2024-06-27 20:41:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 20:41:59,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 20:41:59,325 INFO L175 Difference]: Start difference. First operand has 261 places, 264 transitions, 3247 flow. Second operand 9 states and 109 transitions. [2024-06-27 20:41:59,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 4071 flow [2024-06-27 20:41:59,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 284 transitions, 3810 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:59,630 INFO L231 Difference]: Finished difference. Result has 263 places, 268 transitions, 3285 flow [2024-06-27 20:41:59,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3285, PETRI_PLACES=263, PETRI_TRANSITIONS=268} [2024-06-27 20:41:59,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-27 20:41:59,630 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 268 transitions, 3285 flow [2024-06-27 20:41:59,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:59,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:59,631 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 20:41:59,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:41:59,631 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 20:41:59,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1924303433, now seen corresponding path program 4 times [2024-06-27 20:41:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:59,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972025471] [2024-06-27 20:41:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:59,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972025471] [2024-06-27 20:42:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972025471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:00,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:00,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:00,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622605560] [2024-06-27 20:42:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:00,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:00,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:00,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:00,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 268 transitions, 3285 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:00,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:00,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:00,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:00,722 INFO L124 PetriNetUnfolderBase]: 671/1216 cut-off events. [2024-06-27 20:42:00,722 INFO L125 PetriNetUnfolderBase]: For 91842/91842 co-relation queries the response was YES. [2024-06-27 20:42:00,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8361 conditions, 1216 events. 671/1216 cut-off events. For 91842/91842 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6497 event pairs, 94 based on Foata normal form. 2/1216 useless extension candidates. Maximal degree in co-relation 8236. Up to 676 conditions per place. [2024-06-27 20:42:00,733 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 120 changer transitions 0/286 dead transitions. [2024-06-27 20:42:00,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 286 transitions, 4061 flow [2024-06-27 20:42:00,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 20:42:00,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 20:42:00,735 INFO L175 Difference]: Start difference. First operand has 263 places, 268 transitions, 3285 flow. Second operand 9 states and 116 transitions. [2024-06-27 20:42:00,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 286 transitions, 4061 flow [2024-06-27 20:42:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 286 transitions, 3902 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:42:00,994 INFO L231 Difference]: Finished difference. Result has 267 places, 268 transitions, 3376 flow [2024-06-27 20:42:00,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3376, PETRI_PLACES=267, PETRI_TRANSITIONS=268} [2024-06-27 20:42:00,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 20:42:00,995 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 268 transitions, 3376 flow [2024-06-27 20:42:00,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:00,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:00,995 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 20:42:00,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:42:00,996 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 20:42:00,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1924303619, now seen corresponding path program 10 times [2024-06-27 20:42:00,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:00,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274235653] [2024-06-27 20:42:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:00,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:01,556 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 20:42:01,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274235653] [2024-06-27 20:42:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274235653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:01,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595851975] [2024-06-27 20:42:01,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:01,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:01,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:01,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 268 transitions, 3376 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:01,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:01,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:01,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:02,014 INFO L124 PetriNetUnfolderBase]: 665/1206 cut-off events. [2024-06-27 20:42:02,014 INFO L125 PetriNetUnfolderBase]: For 87671/87671 co-relation queries the response was YES. [2024-06-27 20:42:02,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8222 conditions, 1206 events. 665/1206 cut-off events. For 87671/87671 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6464 event pairs, 100 based on Foata normal form. 4/1208 useless extension candidates. Maximal degree in co-relation 8095. Up to 889 conditions per place. [2024-06-27 20:42:02,025 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 117 changer transitions 0/282 dead transitions. [2024-06-27 20:42:02,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 282 transitions, 3978 flow [2024-06-27 20:42:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 20:42:02,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 20:42:02,027 INFO L175 Difference]: Start difference. First operand has 267 places, 268 transitions, 3376 flow. Second operand 9 states and 107 transitions. [2024-06-27 20:42:02,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 282 transitions, 3978 flow [2024-06-27 20:42:02,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 282 transitions, 3647 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:02,281 INFO L231 Difference]: Finished difference. Result has 266 places, 268 transitions, 3285 flow [2024-06-27 20:42:02,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3285, PETRI_PLACES=266, PETRI_TRANSITIONS=268} [2024-06-27 20:42:02,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 20:42:02,282 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 268 transitions, 3285 flow [2024-06-27 20:42:02,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:02,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:02,283 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 20:42:02,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:42:02,283 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 20:42:02,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash -816156067, now seen corresponding path program 5 times [2024-06-27 20:42:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:02,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977917030] [2024-06-27 20:42:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:02,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:03,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:03,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977917030] [2024-06-27 20:42:03,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977917030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:03,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:03,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:42:03,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593120210] [2024-06-27 20:42:03,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:03,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:42:03,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:42:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:42:03,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:03,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 268 transitions, 3285 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:03,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:03,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:03,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:03,621 INFO L124 PetriNetUnfolderBase]: 717/1290 cut-off events. [2024-06-27 20:42:03,621 INFO L125 PetriNetUnfolderBase]: For 87243/87243 co-relation queries the response was YES. [2024-06-27 20:42:03,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8678 conditions, 1290 events. 717/1290 cut-off events. For 87243/87243 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6966 event pairs, 167 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 8551. Up to 965 conditions per place. [2024-06-27 20:42:03,633 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 212 selfloop transitions, 86 changer transitions 0/300 dead transitions. [2024-06-27 20:42:03,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 300 transitions, 4206 flow [2024-06-27 20:42:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 20:42:03,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 20:42:03,634 INFO L175 Difference]: Start difference. First operand has 266 places, 268 transitions, 3285 flow. Second operand 9 states and 114 transitions. [2024-06-27 20:42:03,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 300 transitions, 4206 flow [2024-06-27 20:42:03,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 300 transitions, 3969 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:03,937 INFO L231 Difference]: Finished difference. Result has 269 places, 283 transitions, 3450 flow [2024-06-27 20:42:03,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3450, PETRI_PLACES=269, PETRI_TRANSITIONS=283} [2024-06-27 20:42:03,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-27 20:42:03,937 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 283 transitions, 3450 flow [2024-06-27 20:42:03,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:03,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:03,938 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 20:42:03,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:42:03,938 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 20:42:03,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -816156253, now seen corresponding path program 11 times [2024-06-27 20:42:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141618509] [2024-06-27 20:42:03,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:03,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:04,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:04,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141618509] [2024-06-27 20:42:04,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141618509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:04,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:04,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:04,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690074150] [2024-06-27 20:42:04,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:04,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:04,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:04,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:04,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 283 transitions, 3450 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 20:42:04,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:04,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:04,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:05,436 INFO L124 PetriNetUnfolderBase]: 731/1318 cut-off events. [2024-06-27 20:42:05,436 INFO L125 PetriNetUnfolderBase]: For 95852/95852 co-relation queries the response was YES. [2024-06-27 20:42:05,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9015 conditions, 1318 events. 731/1318 cut-off events. For 95852/95852 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7174 event pairs, 107 based on Foata normal form. 4/1320 useless extension candidates. Maximal degree in co-relation 8885. Up to 987 conditions per place. [2024-06-27 20:42:05,449 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 178 selfloop transitions, 125 changer transitions 0/305 dead transitions. [2024-06-27 20:42:05,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 305 transitions, 4175 flow [2024-06-27 20:42:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:42:05,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:42:05,450 INFO L175 Difference]: Start difference. First operand has 269 places, 283 transitions, 3450 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:42:05,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 305 transitions, 4175 flow [2024-06-27 20:42:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 305 transitions, 4153 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 20:42:05,759 INFO L231 Difference]: Finished difference. Result has 278 places, 289 transitions, 3765 flow [2024-06-27 20:42:05,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3765, PETRI_PLACES=278, PETRI_TRANSITIONS=289} [2024-06-27 20:42:05,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-27 20:42:05,760 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 289 transitions, 3765 flow [2024-06-27 20:42:05,760 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 20:42:05,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:05,760 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 20:42:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:42:05,761 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 20:42:05,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash -649742797, now seen corresponding path program 6 times [2024-06-27 20:42:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:05,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833245693] [2024-06-27 20:42:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:05,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:06,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833245693] [2024-06-27 20:42:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833245693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435734559] [2024-06-27 20:42:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:06,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:06,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:06,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 289 transitions, 3765 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 20:42:06,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:06,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:06,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:07,403 INFO L124 PetriNetUnfolderBase]: 743/1336 cut-off events. [2024-06-27 20:42:07,403 INFO L125 PetriNetUnfolderBase]: For 98761/98761 co-relation queries the response was YES. [2024-06-27 20:42:07,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9406 conditions, 1336 events. 743/1336 cut-off events. For 98761/98761 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7276 event pairs, 97 based on Foata normal form. 4/1338 useless extension candidates. Maximal degree in co-relation 9274. Up to 725 conditions per place. [2024-06-27 20:42:07,416 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 140 changer transitions 0/311 dead transitions. [2024-06-27 20:42:07,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 311 transitions, 4629 flow [2024-06-27 20:42:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:42:07,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:42:07,418 INFO L175 Difference]: Start difference. First operand has 278 places, 289 transitions, 3765 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:42:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 311 transitions, 4629 flow [2024-06-27 20:42:07,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 311 transitions, 4436 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:07,666 INFO L231 Difference]: Finished difference. Result has 280 places, 293 transitions, 3904 flow [2024-06-27 20:42:07,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3904, PETRI_PLACES=280, PETRI_TRANSITIONS=293} [2024-06-27 20:42:07,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-27 20:42:07,667 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 293 transitions, 3904 flow [2024-06-27 20:42:07,667 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 20:42:07,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:07,667 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 20:42:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:42:07,667 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 20:42:07,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -649749307, now seen corresponding path program 7 times [2024-06-27 20:42:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75790373] [2024-06-27 20:42:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:08,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:08,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75790373] [2024-06-27 20:42:08,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75790373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:08,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:08,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174854127] [2024-06-27 20:42:08,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:08,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:08,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:08,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:08,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 293 transitions, 3904 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 20:42:08,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:08,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:08,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:09,263 INFO L124 PetriNetUnfolderBase]: 755/1356 cut-off events. [2024-06-27 20:42:09,263 INFO L125 PetriNetUnfolderBase]: For 99725/99725 co-relation queries the response was YES. [2024-06-27 20:42:09,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9614 conditions, 1356 events. 755/1356 cut-off events. For 99725/99725 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7386 event pairs, 81 based on Foata normal form. 4/1358 useless extension candidates. Maximal degree in co-relation 9482. Up to 1011 conditions per place. [2024-06-27 20:42:09,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 98 changer transitions 0/316 dead transitions. [2024-06-27 20:42:09,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 316 transitions, 4624 flow [2024-06-27 20:42:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:42:09,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:42:09,277 INFO L175 Difference]: Start difference. First operand has 280 places, 293 transitions, 3904 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:42:09,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 316 transitions, 4624 flow [2024-06-27 20:42:09,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 316 transitions, 4322 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:09,575 INFO L231 Difference]: Finished difference. Result has 283 places, 297 transitions, 3864 flow [2024-06-27 20:42:09,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3864, PETRI_PLACES=283, PETRI_TRANSITIONS=297} [2024-06-27 20:42:09,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-27 20:42:09,576 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 297 transitions, 3864 flow [2024-06-27 20:42:09,576 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 20:42:09,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:09,576 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 20:42:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:42:09,576 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 20:42:09,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash -649922473, now seen corresponding path program 12 times [2024-06-27 20:42:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970007992] [2024-06-27 20:42:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:10,645 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 20:42:10,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:10,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970007992] [2024-06-27 20:42:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970007992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:10,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013736123] [2024-06-27 20:42:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:10,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:10,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:10,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:10,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 297 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 20:42:10,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:10,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:10,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:11,254 INFO L124 PetriNetUnfolderBase]: 766/1377 cut-off events. [2024-06-27 20:42:11,255 INFO L125 PetriNetUnfolderBase]: For 101733/101733 co-relation queries the response was YES. [2024-06-27 20:42:11,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9666 conditions, 1377 events. 766/1377 cut-off events. For 101733/101733 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7570 event pairs, 106 based on Foata normal form. 4/1379 useless extension candidates. Maximal degree in co-relation 9533. Up to 1059 conditions per place. [2024-06-27 20:42:11,268 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 187 selfloop transitions, 125 changer transitions 0/314 dead transitions. [2024-06-27 20:42:11,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 314 transitions, 4576 flow [2024-06-27 20:42:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:42:11,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:42:11,270 INFO L175 Difference]: Start difference. First operand has 283 places, 297 transitions, 3864 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:42:11,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 314 transitions, 4576 flow [2024-06-27 20:42:11,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 314 transitions, 4372 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:11,562 INFO L231 Difference]: Finished difference. Result has 285 places, 301 transitions, 3978 flow [2024-06-27 20:42:11,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3978, PETRI_PLACES=285, PETRI_TRANSITIONS=301} [2024-06-27 20:42:11,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-27 20:42:11,562 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 301 transitions, 3978 flow [2024-06-27 20:42:11,562 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 20:42:11,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:11,563 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 20:42:11,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:42:11,563 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 20:42:11,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:11,563 INFO L85 PathProgramCache]: Analyzing trace with hash -580027481, now seen corresponding path program 13 times [2024-06-27 20:42:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:11,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387051644] [2024-06-27 20:42:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:12,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:12,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387051644] [2024-06-27 20:42:12,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387051644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:12,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:12,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:12,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910901806] [2024-06-27 20:42:12,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:12,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:12,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:12,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:12,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:12,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 301 transitions, 3978 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 20:42:12,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:12,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:12,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:12,997 INFO L124 PetriNetUnfolderBase]: 774/1393 cut-off events. [2024-06-27 20:42:12,997 INFO L125 PetriNetUnfolderBase]: For 104192/104192 co-relation queries the response was YES. [2024-06-27 20:42:13,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9794 conditions, 1393 events. 774/1393 cut-off events. For 104192/104192 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7713 event pairs, 113 based on Foata normal form. 4/1395 useless extension candidates. Maximal degree in co-relation 9660. Up to 1075 conditions per place. [2024-06-27 20:42:13,012 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 190 selfloop transitions, 123 changer transitions 0/315 dead transitions. [2024-06-27 20:42:13,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 315 transitions, 4665 flow [2024-06-27 20:42:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:42:13,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:42:13,013 INFO L175 Difference]: Start difference. First operand has 285 places, 301 transitions, 3978 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:42:13,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 315 transitions, 4665 flow [2024-06-27 20:42:13,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 315 transitions, 4463 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:13,318 INFO L231 Difference]: Finished difference. Result has 287 places, 303 transitions, 4065 flow [2024-06-27 20:42:13,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4065, PETRI_PLACES=287, PETRI_TRANSITIONS=303} [2024-06-27 20:42:13,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-27 20:42:13,319 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 303 transitions, 4065 flow [2024-06-27 20:42:13,319 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 20:42:13,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:13,319 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 20:42:13,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:42:13,319 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 20:42:13,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash -649927123, now seen corresponding path program 14 times [2024-06-27 20:42:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647035214] [2024-06-27 20:42:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:13,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:13,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647035214] [2024-06-27 20:42:13,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647035214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:13,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:13,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298549352] [2024-06-27 20:42:13,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:13,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:14,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:14,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 303 transitions, 4065 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:14,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:14,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:14,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:14,478 INFO L124 PetriNetUnfolderBase]: 782/1411 cut-off events. [2024-06-27 20:42:14,479 INFO L125 PetriNetUnfolderBase]: For 107139/107139 co-relation queries the response was YES. [2024-06-27 20:42:14,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9930 conditions, 1411 events. 782/1411 cut-off events. For 107139/107139 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7840 event pairs, 64 based on Foata normal form. 4/1413 useless extension candidates. Maximal degree in co-relation 9795. Up to 998 conditions per place. [2024-06-27 20:42:14,494 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 123 changer transitions 0/323 dead transitions. [2024-06-27 20:42:14,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 323 transitions, 4966 flow [2024-06-27 20:42:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 20:42:14,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 20:42:14,502 INFO L175 Difference]: Start difference. First operand has 287 places, 303 transitions, 4065 flow. Second operand 9 states and 112 transitions. [2024-06-27 20:42:14,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 323 transitions, 4966 flow [2024-06-27 20:42:14,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 323 transitions, 4704 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:14,844 INFO L231 Difference]: Finished difference. Result has 288 places, 305 transitions, 4093 flow [2024-06-27 20:42:14,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4093, PETRI_PLACES=288, PETRI_TRANSITIONS=305} [2024-06-27 20:42:14,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-27 20:42:14,844 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 305 transitions, 4093 flow [2024-06-27 20:42:14,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:14,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:14,845 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 20:42:14,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:42:14,845 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 20:42:14,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:14,845 INFO L85 PathProgramCache]: Analyzing trace with hash -643247119, now seen corresponding path program 1 times [2024-06-27 20:42:14,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:14,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935026508] [2024-06-27 20:42:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:14,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935026508] [2024-06-27 20:42:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935026508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:15,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:15,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:15,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381566404] [2024-06-27 20:42:15,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:15,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:15,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:15,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 305 transitions, 4093 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 20:42:15,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:15,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:15,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:16,601 INFO L124 PetriNetUnfolderBase]: 806/1461 cut-off events. [2024-06-27 20:42:16,602 INFO L125 PetriNetUnfolderBase]: For 146853/146853 co-relation queries the response was YES. [2024-06-27 20:42:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10148 conditions, 1461 events. 806/1461 cut-off events. For 146853/146853 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8206 event pairs, 118 based on Foata normal form. 14/1473 useless extension candidates. Maximal degree in co-relation 10012. Up to 781 conditions per place. [2024-06-27 20:42:16,614 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 133 changer transitions 8/329 dead transitions. [2024-06-27 20:42:16,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 329 transitions, 5005 flow [2024-06-27 20:42:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 20:42:16,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 20:42:16,615 INFO L175 Difference]: Start difference. First operand has 288 places, 305 transitions, 4093 flow. Second operand 11 states and 136 transitions. [2024-06-27 20:42:16,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 329 transitions, 5005 flow [2024-06-27 20:42:17,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 329 transitions, 4639 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:17,015 INFO L231 Difference]: Finished difference. Result has 290 places, 303 transitions, 3997 flow [2024-06-27 20:42:17,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3997, PETRI_PLACES=290, PETRI_TRANSITIONS=303} [2024-06-27 20:42:17,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-27 20:42:17,016 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 303 transitions, 3997 flow [2024-06-27 20:42:17,016 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 20:42:17,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:17,017 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 20:42:17,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:42:17,017 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 20:42:17,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -815983087, now seen corresponding path program 8 times [2024-06-27 20:42:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085523135] [2024-06-27 20:42:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:17,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085523135] [2024-06-27 20:42:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085523135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:17,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791942405] [2024-06-27 20:42:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:17,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:17,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:17,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 303 transitions, 3997 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 20:42:17,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:17,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:17,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:18,612 INFO L124 PetriNetUnfolderBase]: 812/1465 cut-off events. [2024-06-27 20:42:18,612 INFO L125 PetriNetUnfolderBase]: For 127690/127690 co-relation queries the response was YES. [2024-06-27 20:42:18,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 1465 events. 812/1465 cut-off events. For 127690/127690 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8246 event pairs, 103 based on Foata normal form. 4/1467 useless extension candidates. Maximal degree in co-relation 10294. Up to 1112 conditions per place. [2024-06-27 20:42:18,627 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 110 changer transitions 0/333 dead transitions. [2024-06-27 20:42:18,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 333 transitions, 5007 flow [2024-06-27 20:42:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:42:18,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:42:18,628 INFO L175 Difference]: Start difference. First operand has 290 places, 303 transitions, 3997 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:42:18,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 333 transitions, 5007 flow [2024-06-27 20:42:19,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 333 transitions, 4666 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 20:42:19,034 INFO L231 Difference]: Finished difference. Result has 290 places, 311 transitions, 4008 flow [2024-06-27 20:42:19,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3672, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4008, PETRI_PLACES=290, PETRI_TRANSITIONS=311} [2024-06-27 20:42:19,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-27 20:42:19,035 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 311 transitions, 4008 flow [2024-06-27 20:42:19,035 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 20:42:19,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:19,035 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 20:42:19,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:42:19,035 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 20:42:19,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:19,036 INFO L85 PathProgramCache]: Analyzing trace with hash -643256047, now seen corresponding path program 9 times [2024-06-27 20:42:19,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:19,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899753074] [2024-06-27 20:42:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:19,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899753074] [2024-06-27 20:42:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899753074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:19,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528178293] [2024-06-27 20:42:19,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:19,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:19,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:19,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 311 transitions, 4008 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 20:42:19,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:19,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:19,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:20,396 INFO L124 PetriNetUnfolderBase]: 824/1483 cut-off events. [2024-06-27 20:42:20,396 INFO L125 PetriNetUnfolderBase]: For 129759/129759 co-relation queries the response was YES. [2024-06-27 20:42:20,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10410 conditions, 1483 events. 824/1483 cut-off events. For 129759/129759 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8351 event pairs, 82 based on Foata normal form. 4/1485 useless extension candidates. Maximal degree in co-relation 10275. Up to 1156 conditions per place. [2024-06-27 20:42:20,411 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 233 selfloop transitions, 96 changer transitions 0/331 dead transitions. [2024-06-27 20:42:20,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 331 transitions, 4760 flow [2024-06-27 20:42:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:42:20,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:42:20,412 INFO L175 Difference]: Start difference. First operand has 290 places, 311 transitions, 4008 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:42:20,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 331 transitions, 4760 flow [2024-06-27 20:42:20,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 331 transitions, 4601 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:20,805 INFO L231 Difference]: Finished difference. Result has 293 places, 315 transitions, 4115 flow [2024-06-27 20:42:20,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4115, PETRI_PLACES=293, PETRI_TRANSITIONS=315} [2024-06-27 20:42:20,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-27 20:42:20,805 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 315 transitions, 4115 flow [2024-06-27 20:42:20,806 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 20:42:20,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:20,806 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 20:42:20,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:42:20,806 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 20:42:20,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -643493197, now seen corresponding path program 10 times [2024-06-27 20:42:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857491914] [2024-06-27 20:42:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:21,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857491914] [2024-06-27 20:42:21,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857491914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:21,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:21,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51255864] [2024-06-27 20:42:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:21,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:21,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:21,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 315 transitions, 4115 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 20:42:21,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:21,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:21,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:22,405 INFO L124 PetriNetUnfolderBase]: 856/1535 cut-off events. [2024-06-27 20:42:22,405 INFO L125 PetriNetUnfolderBase]: For 148962/148962 co-relation queries the response was YES. [2024-06-27 20:42:22,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11267 conditions, 1535 events. 856/1535 cut-off events. For 148962/148962 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8641 event pairs, 109 based on Foata normal form. 4/1537 useless extension candidates. Maximal degree in co-relation 11130. Up to 869 conditions per place. [2024-06-27 20:42:22,419 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 171 changer transitions 0/344 dead transitions. [2024-06-27 20:42:22,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 344 transitions, 5333 flow [2024-06-27 20:42:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:42:22,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:42:22,421 INFO L175 Difference]: Start difference. First operand has 293 places, 315 transitions, 4115 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:42:22,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 344 transitions, 5333 flow [2024-06-27 20:42:22,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 344 transitions, 5117 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:22,869 INFO L231 Difference]: Finished difference. Result has 296 places, 323 transitions, 4381 flow [2024-06-27 20:42:22,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4381, PETRI_PLACES=296, PETRI_TRANSITIONS=323} [2024-06-27 20:42:22,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-27 20:42:22,870 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 323 transitions, 4381 flow [2024-06-27 20:42:22,870 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 20:42:22,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:22,870 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 20:42:22,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:42:22,870 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 20:42:22,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -643486687, now seen corresponding path program 11 times [2024-06-27 20:42:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810675983] [2024-06-27 20:42:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:23,928 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 20:42:23,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810675983] [2024-06-27 20:42:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810675983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:23,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841877145] [2024-06-27 20:42:23,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:23,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:23,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:23,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:23,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 323 transitions, 4381 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 20:42:23,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:23,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:23,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:24,496 INFO L124 PetriNetUnfolderBase]: 848/1523 cut-off events. [2024-06-27 20:42:24,496 INFO L125 PetriNetUnfolderBase]: For 136372/136372 co-relation queries the response was YES. [2024-06-27 20:42:24,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11032 conditions, 1523 events. 848/1523 cut-off events. For 136372/136372 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8593 event pairs, 82 based on Foata normal form. 4/1525 useless extension candidates. Maximal degree in co-relation 10894. Up to 1196 conditions per place. [2024-06-27 20:42:24,512 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 246 selfloop transitions, 92 changer transitions 0/340 dead transitions. [2024-06-27 20:42:24,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 340 transitions, 5095 flow [2024-06-27 20:42:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:42:24,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 20:42:24,514 INFO L175 Difference]: Start difference. First operand has 296 places, 323 transitions, 4381 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:42:24,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 340 transitions, 5095 flow [2024-06-27 20:42:24,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 340 transitions, 4819 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:24,963 INFO L231 Difference]: Finished difference. Result has 299 places, 323 transitions, 4297 flow [2024-06-27 20:42:24,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4297, PETRI_PLACES=299, PETRI_TRANSITIONS=323} [2024-06-27 20:42:24,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-27 20:42:24,964 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 323 transitions, 4297 flow [2024-06-27 20:42:24,964 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 20:42:24,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:24,965 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 20:42:24,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:42:24,965 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 20:42:24,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash -643493383, now seen corresponding path program 15 times [2024-06-27 20:42:24,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:24,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093071605] [2024-06-27 20:42:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:24,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093071605] [2024-06-27 20:42:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093071605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952962790] [2024-06-27 20:42:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:25,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:25,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:25,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 323 transitions, 4297 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 20:42:25,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:25,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:25,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:26,383 INFO L124 PetriNetUnfolderBase]: 856/1539 cut-off events. [2024-06-27 20:42:26,383 INFO L125 PetriNetUnfolderBase]: For 139481/139481 co-relation queries the response was YES. [2024-06-27 20:42:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1539 events. 856/1539 cut-off events. For 139481/139481 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8746 event pairs, 127 based on Foata normal form. 4/1541 useless extension candidates. Maximal degree in co-relation 10822. Up to 1221 conditions per place. [2024-06-27 20:42:26,399 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 208 selfloop transitions, 127 changer transitions 0/337 dead transitions. [2024-06-27 20:42:26,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 337 transitions, 5028 flow [2024-06-27 20:42:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:42:26,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:42:26,400 INFO L175 Difference]: Start difference. First operand has 299 places, 323 transitions, 4297 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:42:26,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 337 transitions, 5028 flow [2024-06-27 20:42:26,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 337 transitions, 4820 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:26,882 INFO L231 Difference]: Finished difference. Result has 300 places, 325 transitions, 4386 flow [2024-06-27 20:42:26,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4386, PETRI_PLACES=300, PETRI_TRANSITIONS=325} [2024-06-27 20:42:26,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-27 20:42:26,883 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 325 transitions, 4386 flow [2024-06-27 20:42:26,883 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 20:42:26,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:26,883 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 20:42:26,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:42:26,883 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 20:42:26,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1940390853, now seen corresponding path program 16 times [2024-06-27 20:42:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:26,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549275841] [2024-06-27 20:42:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:27,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549275841] [2024-06-27 20:42:27,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549275841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:27,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510565394] [2024-06-27 20:42:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:27,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:27,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 325 transitions, 4386 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 20:42:27,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:27,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:27,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:28,326 INFO L124 PetriNetUnfolderBase]: 857/1544 cut-off events. [2024-06-27 20:42:28,326 INFO L125 PetriNetUnfolderBase]: For 134347/134347 co-relation queries the response was YES. [2024-06-27 20:42:28,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10845 conditions, 1544 events. 857/1544 cut-off events. For 134347/134347 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8779 event pairs, 126 based on Foata normal form. 4/1546 useless extension candidates. Maximal degree in co-relation 10705. Up to 1212 conditions per place. [2024-06-27 20:42:28,339 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 123 changer transitions 0/341 dead transitions. [2024-06-27 20:42:28,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 341 transitions, 5125 flow [2024-06-27 20:42:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:42:28,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:42:28,340 INFO L175 Difference]: Start difference. First operand has 300 places, 325 transitions, 4386 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:42:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 341 transitions, 5125 flow [2024-06-27 20:42:28,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 341 transitions, 4855 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:28,797 INFO L231 Difference]: Finished difference. Result has 302 places, 326 transitions, 4391 flow [2024-06-27 20:42:28,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4391, PETRI_PLACES=302, PETRI_TRANSITIONS=326} [2024-06-27 20:42:28,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-27 20:42:28,798 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 326 transitions, 4391 flow [2024-06-27 20:42:28,798 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 20:42:28,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:28,799 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 20:42:28,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:42:28,799 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 20:42:28,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1940397549, now seen corresponding path program 12 times [2024-06-27 20:42:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:28,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022298930] [2024-06-27 20:42:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:29,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022298930] [2024-06-27 20:42:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022298930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:29,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:29,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721858060] [2024-06-27 20:42:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:29,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:29,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:29,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 326 transitions, 4391 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 20:42:29,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:29,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:29,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:30,415 INFO L124 PetriNetUnfolderBase]: 849/1532 cut-off events. [2024-06-27 20:42:30,415 INFO L125 PetriNetUnfolderBase]: For 119837/119837 co-relation queries the response was YES. [2024-06-27 20:42:30,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 1532 events. 849/1532 cut-off events. For 119837/119837 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8726 event pairs, 107 based on Foata normal form. 4/1534 useless extension candidates. Maximal degree in co-relation 10277. Up to 876 conditions per place. [2024-06-27 20:42:30,431 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 184 selfloop transitions, 160 changer transitions 0/346 dead transitions. [2024-06-27 20:42:30,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 346 transitions, 5319 flow [2024-06-27 20:42:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 20:42:30,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 20:42:30,432 INFO L175 Difference]: Start difference. First operand has 302 places, 326 transitions, 4391 flow. Second operand 10 states and 125 transitions. [2024-06-27 20:42:30,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 346 transitions, 5319 flow [2024-06-27 20:42:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 346 transitions, 5045 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:30,796 INFO L231 Difference]: Finished difference. Result has 304 places, 326 transitions, 4445 flow [2024-06-27 20:42:30,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4445, PETRI_PLACES=304, PETRI_TRANSITIONS=326} [2024-06-27 20:42:30,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 20:42:30,797 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 326 transitions, 4445 flow [2024-06-27 20:42:30,797 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 20:42:30,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:30,797 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 20:42:30,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:42:30,797 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 20:42:30,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1117382463, now seen corresponding path program 2 times [2024-06-27 20:42:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983572436] [2024-06-27 20:42:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:31,977 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 20:42:31,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:31,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983572436] [2024-06-27 20:42:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983572436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:31,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:31,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935372154] [2024-06-27 20:42:31,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:31,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:31,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:31,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:32,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:32,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 326 transitions, 4445 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 20:42:32,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:32,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:32,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:32,592 INFO L124 PetriNetUnfolderBase]: 853/1538 cut-off events. [2024-06-27 20:42:32,592 INFO L125 PetriNetUnfolderBase]: For 114020/114020 co-relation queries the response was YES. [2024-06-27 20:42:32,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10579 conditions, 1538 events. 853/1538 cut-off events. For 114020/114020 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8762 event pairs, 210 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 10437. Up to 1462 conditions per place. [2024-06-27 20:42:32,606 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 310 selfloop transitions, 28 changer transitions 0/340 dead transitions. [2024-06-27 20:42:32,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 340 transitions, 5169 flow [2024-06-27 20:42:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:42:32,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 20:42:32,609 INFO L175 Difference]: Start difference. First operand has 304 places, 326 transitions, 4445 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:42:32,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 340 transitions, 5169 flow [2024-06-27 20:42:33,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 340 transitions, 4833 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:33,075 INFO L231 Difference]: Finished difference. Result has 305 places, 327 transitions, 4191 flow [2024-06-27 20:42:33,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4109, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4191, PETRI_PLACES=305, PETRI_TRANSITIONS=327} [2024-06-27 20:42:33,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-27 20:42:33,078 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 327 transitions, 4191 flow [2024-06-27 20:42:33,078 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 20:42:33,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:33,078 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 20:42:33,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:42:33,078 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 20:42:33,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:33,079 INFO L85 PathProgramCache]: Analyzing trace with hash 128795775, now seen corresponding path program 3 times [2024-06-27 20:42:33,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:33,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862546239] [2024-06-27 20:42:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862546239] [2024-06-27 20:42:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862546239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:34,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135120606] [2024-06-27 20:42:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:34,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:34,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:34,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:34,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 327 transitions, 4191 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 20:42:34,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:34,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:34,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:34,570 INFO L124 PetriNetUnfolderBase]: 857/1546 cut-off events. [2024-06-27 20:42:34,570 INFO L125 PetriNetUnfolderBase]: For 115002/115002 co-relation queries the response was YES. [2024-06-27 20:42:34,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10316 conditions, 1546 events. 857/1546 cut-off events. For 115002/115002 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8824 event pairs, 216 based on Foata normal form. 2/1546 useless extension candidates. Maximal degree in co-relation 10173. Up to 1506 conditions per place. [2024-06-27 20:42:34,587 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 322 selfloop transitions, 16 changer transitions 0/340 dead transitions. [2024-06-27 20:42:34,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 340 transitions, 4915 flow [2024-06-27 20:42:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 20:42:34,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-27 20:42:34,591 INFO L175 Difference]: Start difference. First operand has 305 places, 327 transitions, 4191 flow. Second operand 10 states and 97 transitions. [2024-06-27 20:42:34,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 340 transitions, 4915 flow [2024-06-27 20:42:35,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 340 transitions, 4843 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:35,049 INFO L231 Difference]: Finished difference. Result has 307 places, 328 transitions, 4179 flow [2024-06-27 20:42:35,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4119, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4179, PETRI_PLACES=307, PETRI_TRANSITIONS=328} [2024-06-27 20:42:35,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-27 20:42:35,050 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 328 transitions, 4179 flow [2024-06-27 20:42:35,050 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 20:42:35,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:35,050 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 20:42:35,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:42:35,051 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 20:42:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1569004799, now seen corresponding path program 13 times [2024-06-27 20:42:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:35,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781012673] [2024-06-27 20:42:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781012673] [2024-06-27 20:42:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781012673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025922646] [2024-06-27 20:42:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:35,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:35,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 328 transitions, 4179 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 20:42:35,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:35,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:35,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:36,349 INFO L124 PetriNetUnfolderBase]: 863/1556 cut-off events. [2024-06-27 20:42:36,349 INFO L125 PetriNetUnfolderBase]: For 117247/117247 co-relation queries the response was YES. [2024-06-27 20:42:36,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 1556 events. 863/1556 cut-off events. For 117247/117247 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8929 event pairs, 218 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 10201. Up to 1506 conditions per place. [2024-06-27 20:42:36,366 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 323 selfloop transitions, 18 changer transitions 0/343 dead transitions. [2024-06-27 20:42:36,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 343 transitions, 4923 flow [2024-06-27 20:42:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:42:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:42:36,367 INFO L175 Difference]: Start difference. First operand has 307 places, 328 transitions, 4179 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:42:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 343 transitions, 4923 flow [2024-06-27 20:42:36,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 343 transitions, 4873 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:36,830 INFO L231 Difference]: Finished difference. Result has 309 places, 330 transitions, 4208 flow [2024-06-27 20:42:36,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4208, PETRI_PLACES=309, PETRI_TRANSITIONS=330} [2024-06-27 20:42:36,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-27 20:42:36,831 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 330 transitions, 4208 flow [2024-06-27 20:42:36,831 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 20:42:36,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:36,831 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 20:42:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:42:36,831 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 20:42:36,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1590888915, now seen corresponding path program 4 times [2024-06-27 20:42:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491174687] [2024-06-27 20:42:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:37,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491174687] [2024-06-27 20:42:37,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491174687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:37,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:37,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695901381] [2024-06-27 20:42:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:37,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:37,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:37,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 330 transitions, 4208 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 20:42:37,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:37,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:37,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:38,281 INFO L124 PetriNetUnfolderBase]: 867/1564 cut-off events. [2024-06-27 20:42:38,282 INFO L125 PetriNetUnfolderBase]: For 119930/119930 co-relation queries the response was YES. [2024-06-27 20:42:38,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 1564 events. 867/1564 cut-off events. For 119930/119930 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9000 event pairs, 213 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 10266. Up to 1515 conditions per place. [2024-06-27 20:42:38,298 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 323 selfloop transitions, 19 changer transitions 0/344 dead transitions. [2024-06-27 20:42:38,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 344 transitions, 4944 flow [2024-06-27 20:42:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:42:38,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:42:38,299 INFO L175 Difference]: Start difference. First operand has 309 places, 330 transitions, 4208 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:42:38,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 344 transitions, 4944 flow [2024-06-27 20:42:38,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 344 transitions, 4893 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:38,757 INFO L231 Difference]: Finished difference. Result has 311 places, 331 transitions, 4225 flow [2024-06-27 20:42:38,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4225, PETRI_PLACES=311, PETRI_TRANSITIONS=331} [2024-06-27 20:42:38,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-27 20:42:38,758 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 331 transitions, 4225 flow [2024-06-27 20:42:38,758 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 20:42:38,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:38,758 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 20:42:38,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:42:38,758 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 20:42:38,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2072334903, now seen corresponding path program 17 times [2024-06-27 20:42:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:38,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989805625] [2024-06-27 20:42:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:38,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989805625] [2024-06-27 20:42:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989805625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:42:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332322225] [2024-06-27 20:42:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:42:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:42:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:42:39,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:39,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 331 transitions, 4225 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:39,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:39,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:39,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:40,015 INFO L124 PetriNetUnfolderBase]: 871/1574 cut-off events. [2024-06-27 20:42:40,016 INFO L125 PetriNetUnfolderBase]: For 121993/121993 co-relation queries the response was YES. [2024-06-27 20:42:40,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10476 conditions, 1574 events. 871/1574 cut-off events. For 121993/121993 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9069 event pairs, 120 based on Foata normal form. 2/1574 useless extension candidates. Maximal degree in co-relation 10330. Up to 1301 conditions per place. [2024-06-27 20:42:40,029 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 229 selfloop transitions, 117 changer transitions 0/348 dead transitions. [2024-06-27 20:42:40,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 348 transitions, 4984 flow [2024-06-27 20:42:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:42:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:42:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 20:42:40,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 20:42:40,031 INFO L175 Difference]: Start difference. First operand has 311 places, 331 transitions, 4225 flow. Second operand 9 states and 109 transitions. [2024-06-27 20:42:40,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 348 transitions, 4984 flow [2024-06-27 20:42:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 348 transitions, 4926 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:40,535 INFO L231 Difference]: Finished difference. Result has 312 places, 332 transitions, 4434 flow [2024-06-27 20:42:40,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4434, PETRI_PLACES=312, PETRI_TRANSITIONS=332} [2024-06-27 20:42:40,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 20:42:40,536 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 332 transitions, 4434 flow [2024-06-27 20:42:40,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:40,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:40,536 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 20:42:40,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:42:40,536 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 20:42:40,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1886464305, now seen corresponding path program 5 times [2024-06-27 20:42:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251223841] [2024-06-27 20:42:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251223841] [2024-06-27 20:42:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251223841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:41,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:41,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850027203] [2024-06-27 20:42:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:41,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:41,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 332 transitions, 4434 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 20:42:41,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:41,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:41,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:42,014 INFO L124 PetriNetUnfolderBase]: 875/1580 cut-off events. [2024-06-27 20:42:42,014 INFO L125 PetriNetUnfolderBase]: For 124938/124938 co-relation queries the response was YES. [2024-06-27 20:42:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10766 conditions, 1580 events. 875/1580 cut-off events. For 124938/124938 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9083 event pairs, 217 based on Foata normal form. 2/1580 useless extension candidates. Maximal degree in co-relation 10619. Up to 1540 conditions per place. [2024-06-27 20:42:42,031 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 328 selfloop transitions, 15 changer transitions 0/345 dead transitions. [2024-06-27 20:42:42,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 345 transitions, 5172 flow [2024-06-27 20:42:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-27 20:42:42,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:42:42,032 INFO L175 Difference]: Start difference. First operand has 312 places, 332 transitions, 4434 flow. Second operand 10 states and 95 transitions. [2024-06-27 20:42:42,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 345 transitions, 5172 flow [2024-06-27 20:42:42,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 345 transitions, 4936 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:42,588 INFO L231 Difference]: Finished difference. Result has 315 places, 333 transitions, 4260 flow [2024-06-27 20:42:42,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4198, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4260, PETRI_PLACES=315, PETRI_TRANSITIONS=333} [2024-06-27 20:42:42,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-27 20:42:42,589 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 333 transitions, 4260 flow [2024-06-27 20:42:42,589 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 20:42:42,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:42,589 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 20:42:42,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:42:42,590 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 20:42:42,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash 512543055, now seen corresponding path program 14 times [2024-06-27 20:42:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096907131] [2024-06-27 20:42:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:43,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096907131] [2024-06-27 20:42:43,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096907131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:43,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:43,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368155068] [2024-06-27 20:42:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:43,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:43,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 333 transitions, 4260 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 20:42:43,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:43,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:43,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:44,174 INFO L124 PetriNetUnfolderBase]: 881/1590 cut-off events. [2024-06-27 20:42:44,175 INFO L125 PetriNetUnfolderBase]: For 124875/124875 co-relation queries the response was YES. [2024-06-27 20:42:44,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 1590 events. 881/1590 cut-off events. For 124875/124875 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9165 event pairs, 216 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 10452. Up to 1514 conditions per place. [2024-06-27 20:42:44,192 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 322 selfloop transitions, 25 changer transitions 0/349 dead transitions. [2024-06-27 20:42:44,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 349 transitions, 5022 flow [2024-06-27 20:42:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:42:44,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:42:44,193 INFO L175 Difference]: Start difference. First operand has 315 places, 333 transitions, 4260 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:42:44,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 349 transitions, 5022 flow [2024-06-27 20:42:44,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 349 transitions, 4970 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:44,726 INFO L231 Difference]: Finished difference. Result has 317 places, 335 transitions, 4305 flow [2024-06-27 20:42:44,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4208, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4305, PETRI_PLACES=317, PETRI_TRANSITIONS=335} [2024-06-27 20:42:44,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 20:42:44,727 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 335 transitions, 4305 flow [2024-06-27 20:42:44,727 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 20:42:44,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:44,727 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 20:42:44,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:42:44,727 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 20:42:44,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 593269763, now seen corresponding path program 15 times [2024-06-27 20:42:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191615464] [2024-06-27 20:42:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:45,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191615464] [2024-06-27 20:42:45,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191615464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:45,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:45,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:45,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84906472] [2024-06-27 20:42:45,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:45,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:45,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 335 transitions, 4305 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 20:42:45,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:45,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:45,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:46,144 INFO L124 PetriNetUnfolderBase]: 897/1616 cut-off events. [2024-06-27 20:42:46,144 INFO L125 PetriNetUnfolderBase]: For 137507/137507 co-relation queries the response was YES. [2024-06-27 20:42:46,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11002 conditions, 1616 events. 897/1616 cut-off events. For 137507/137507 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9336 event pairs, 223 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 10853. Up to 1529 conditions per place. [2024-06-27 20:42:46,159 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 322 selfloop transitions, 31 changer transitions 0/355 dead transitions. [2024-06-27 20:42:46,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 355 transitions, 5329 flow [2024-06-27 20:42:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:42:46,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:42:46,160 INFO L175 Difference]: Start difference. First operand has 317 places, 335 transitions, 4305 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:42:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 355 transitions, 5329 flow [2024-06-27 20:42:46,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 355 transitions, 5260 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:46,740 INFO L231 Difference]: Finished difference. Result has 319 places, 339 transitions, 4391 flow [2024-06-27 20:42:46,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4391, PETRI_PLACES=319, PETRI_TRANSITIONS=339} [2024-06-27 20:42:46,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-27 20:42:46,741 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 339 transitions, 4391 flow [2024-06-27 20:42:46,741 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 20:42:46,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:46,741 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 20:42:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:42:46,741 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 20:42:46,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1590649347, now seen corresponding path program 16 times [2024-06-27 20:42:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:46,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515807183] [2024-06-27 20:42:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:46,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515807183] [2024-06-27 20:42:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515807183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:47,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:47,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:47,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223984784] [2024-06-27 20:42:47,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:47,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:47,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:47,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:47,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 339 transitions, 4391 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 20:42:47,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:47,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:47,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:48,199 INFO L124 PetriNetUnfolderBase]: 903/1626 cut-off events. [2024-06-27 20:42:48,199 INFO L125 PetriNetUnfolderBase]: For 140571/140571 co-relation queries the response was YES. [2024-06-27 20:42:48,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 1626 events. 903/1626 cut-off events. For 140571/140571 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9376 event pairs, 219 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 10957. Up to 1550 conditions per place. [2024-06-27 20:42:48,217 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 327 selfloop transitions, 26 changer transitions 0/355 dead transitions. [2024-06-27 20:42:48,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 355 transitions, 5173 flow [2024-06-27 20:42:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:42:48,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 20:42:48,218 INFO L175 Difference]: Start difference. First operand has 319 places, 339 transitions, 4391 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:42:48,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 355 transitions, 5173 flow [2024-06-27 20:42:48,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 355 transitions, 5110 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:48,738 INFO L231 Difference]: Finished difference. Result has 323 places, 341 transitions, 4435 flow [2024-06-27 20:42:48,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4435, PETRI_PLACES=323, PETRI_TRANSITIONS=341} [2024-06-27 20:42:48,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-27 20:42:48,739 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 341 transitions, 4435 flow [2024-06-27 20:42:48,739 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 20:42:48,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:48,739 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 20:42:48,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:42:48,739 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 20:42:48,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1590642651, now seen corresponding path program 18 times [2024-06-27 20:42:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:48,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511412306] [2024-06-27 20:42:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:49,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:49,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511412306] [2024-06-27 20:42:49,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511412306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:49,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:49,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442464033] [2024-06-27 20:42:49,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:49,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:49,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:49,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:49,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:49,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 341 transitions, 4435 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 20:42:49,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:49,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:49,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:50,306 INFO L124 PetriNetUnfolderBase]: 907/1634 cut-off events. [2024-06-27 20:42:50,306 INFO L125 PetriNetUnfolderBase]: For 143171/143171 co-relation queries the response was YES. [2024-06-27 20:42:50,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11198 conditions, 1634 events. 907/1634 cut-off events. For 143171/143171 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9482 event pairs, 231 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 11046. Up to 1599 conditions per place. [2024-06-27 20:42:50,324 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 333 selfloop transitions, 17 changer transitions 0/352 dead transitions. [2024-06-27 20:42:50,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 352 transitions, 5176 flow [2024-06-27 20:42:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 20:42:50,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-27 20:42:50,325 INFO L175 Difference]: Start difference. First operand has 323 places, 341 transitions, 4435 flow. Second operand 10 states and 96 transitions. [2024-06-27 20:42:50,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 352 transitions, 5176 flow [2024-06-27 20:42:50,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 352 transitions, 5097 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:50,825 INFO L231 Difference]: Finished difference. Result has 325 places, 342 transitions, 4415 flow [2024-06-27 20:42:50,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4356, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4415, PETRI_PLACES=325, PETRI_TRANSITIONS=342} [2024-06-27 20:42:50,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 20:42:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 342 transitions, 4415 flow [2024-06-27 20:42:50,826 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 20:42:50,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:50,826 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 20:42:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:42:50,826 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 20:42:50,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1590642837, now seen corresponding path program 17 times [2024-06-27 20:42:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571197449] [2024-06-27 20:42:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:51,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571197449] [2024-06-27 20:42:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571197449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:51,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:51,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952372616] [2024-06-27 20:42:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:51,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:51,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 342 transitions, 4415 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 20:42:51,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:51,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:51,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:52,284 INFO L124 PetriNetUnfolderBase]: 913/1644 cut-off events. [2024-06-27 20:42:52,285 INFO L125 PetriNetUnfolderBase]: For 146002/146002 co-relation queries the response was YES. [2024-06-27 20:42:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11245 conditions, 1644 events. 913/1644 cut-off events. For 146002/146002 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9552 event pairs, 219 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 11092. Up to 1543 conditions per place. [2024-06-27 20:42:52,300 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 323 selfloop transitions, 33 changer transitions 0/358 dead transitions. [2024-06-27 20:42:52,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 358 transitions, 5207 flow [2024-06-27 20:42:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:42:52,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:42:52,303 INFO L175 Difference]: Start difference. First operand has 325 places, 342 transitions, 4415 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:42:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 358 transitions, 5207 flow [2024-06-27 20:42:52,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 358 transitions, 5163 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:52,855 INFO L231 Difference]: Finished difference. Result has 327 places, 344 transitions, 4496 flow [2024-06-27 20:42:52,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4371, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4496, PETRI_PLACES=327, PETRI_TRANSITIONS=344} [2024-06-27 20:42:52,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-27 20:42:52,856 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 344 transitions, 4496 flow [2024-06-27 20:42:52,856 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 20:42:52,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:52,856 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 20:42:52,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:42:52,857 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 20:42:52,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2072161973, now seen corresponding path program 19 times [2024-06-27 20:42:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:52,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562977069] [2024-06-27 20:42:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562977069] [2024-06-27 20:42:53,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562977069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:53,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:53,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302050725] [2024-06-27 20:42:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:53,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:53,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 344 transitions, 4496 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 20:42:53,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:53,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:53,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:54,241 INFO L124 PetriNetUnfolderBase]: 917/1652 cut-off events. [2024-06-27 20:42:54,241 INFO L125 PetriNetUnfolderBase]: For 148925/148925 co-relation queries the response was YES. [2024-06-27 20:42:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11369 conditions, 1652 events. 917/1652 cut-off events. For 148925/148925 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9622 event pairs, 232 based on Foata normal form. 2/1652 useless extension candidates. Maximal degree in co-relation 11215. Up to 1608 conditions per place. [2024-06-27 20:42:54,261 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 331 selfloop transitions, 22 changer transitions 0/355 dead transitions. [2024-06-27 20:42:54,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 355 transitions, 5245 flow [2024-06-27 20:42:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:42:54,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-27 20:42:54,262 INFO L175 Difference]: Start difference. First operand has 327 places, 344 transitions, 4496 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:42:54,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 355 transitions, 5245 flow [2024-06-27 20:42:54,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 355 transitions, 5148 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:54,750 INFO L231 Difference]: Finished difference. Result has 329 places, 345 transitions, 4470 flow [2024-06-27 20:42:54,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4470, PETRI_PLACES=329, PETRI_TRANSITIONS=345} [2024-06-27 20:42:54,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-27 20:42:54,750 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 345 transitions, 4470 flow [2024-06-27 20:42:54,751 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 20:42:54,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:54,751 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 20:42:54,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:42:54,751 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 20:42:54,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2072155277, now seen corresponding path program 18 times [2024-06-27 20:42:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199572526] [2024-06-27 20:42:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:55,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199572526] [2024-06-27 20:42:55,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199572526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:55,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:55,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550966729] [2024-06-27 20:42:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:55,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:55,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 345 transitions, 4470 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 20:42:55,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:55,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:55,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:56,176 INFO L124 PetriNetUnfolderBase]: 913/1646 cut-off events. [2024-06-27 20:42:56,176 INFO L125 PetriNetUnfolderBase]: For 140054/140054 co-relation queries the response was YES. [2024-06-27 20:42:56,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11066 conditions, 1646 events. 913/1646 cut-off events. For 140054/140054 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9587 event pairs, 223 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 10911. Up to 1571 conditions per place. [2024-06-27 20:42:56,194 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 329 selfloop transitions, 28 changer transitions 0/359 dead transitions. [2024-06-27 20:42:56,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 359 transitions, 5214 flow [2024-06-27 20:42:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:42:56,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:42:56,195 INFO L175 Difference]: Start difference. First operand has 329 places, 345 transitions, 4470 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:42:56,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 359 transitions, 5214 flow [2024-06-27 20:42:56,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 359 transitions, 5138 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:56,706 INFO L231 Difference]: Finished difference. Result has 331 places, 345 transitions, 4455 flow [2024-06-27 20:42:56,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4455, PETRI_PLACES=331, PETRI_TRANSITIONS=345} [2024-06-27 20:42:56,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-27 20:42:56,706 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 345 transitions, 4455 flow [2024-06-27 20:42:56,706 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 20:42:56,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:56,707 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 20:42:56,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:42:56,707 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 20:42:56,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2065899167, now seen corresponding path program 19 times [2024-06-27 20:42:56,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337373135] [2024-06-27 20:42:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:57,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337373135] [2024-06-27 20:42:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337373135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:57,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450919819] [2024-06-27 20:42:57,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:57,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:57,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:57,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 345 transitions, 4455 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 20:42:57,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:57,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:57,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:58,127 INFO L124 PetriNetUnfolderBase]: 919/1656 cut-off events. [2024-06-27 20:42:58,127 INFO L125 PetriNetUnfolderBase]: For 142726/142726 co-relation queries the response was YES. [2024-06-27 20:42:58,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11151 conditions, 1656 events. 919/1656 cut-off events. For 142726/142726 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9673 event pairs, 223 based on Foata normal form. 2/1656 useless extension candidates. Maximal degree in co-relation 10995. Up to 1581 conditions per place. [2024-06-27 20:42:58,146 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 331 selfloop transitions, 28 changer transitions 0/361 dead transitions. [2024-06-27 20:42:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 361 transitions, 5257 flow [2024-06-27 20:42:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:42:58,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:42:58,147 INFO L175 Difference]: Start difference. First operand has 331 places, 345 transitions, 4455 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:42:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 361 transitions, 5257 flow [2024-06-27 20:42:58,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 361 transitions, 5196 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:58,658 INFO L231 Difference]: Finished difference. Result has 332 places, 347 transitions, 4513 flow [2024-06-27 20:42:58,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4513, PETRI_PLACES=332, PETRI_TRANSITIONS=347} [2024-06-27 20:42:58,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-27 20:42:58,659 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 347 transitions, 4513 flow [2024-06-27 20:42:58,659 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 20:42:58,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:58,659 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 20:42:58,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:42:58,659 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 20:42:58,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2065659599, now seen corresponding path program 6 times [2024-06-27 20:42:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441652389] [2024-06-27 20:42:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441652389] [2024-06-27 20:42:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441652389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568646492] [2024-06-27 20:42:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:59,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:42:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 347 transitions, 4513 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 20:42:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:42:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:00,099 INFO L124 PetriNetUnfolderBase]: 916/1651 cut-off events. [2024-06-27 20:43:00,099 INFO L125 PetriNetUnfolderBase]: For 134041/134041 co-relation queries the response was YES. [2024-06-27 20:43:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10933 conditions, 1651 events. 916/1651 cut-off events. For 134041/134041 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9625 event pairs, 222 based on Foata normal form. 2/1651 useless extension candidates. Maximal degree in co-relation 10776. Up to 1607 conditions per place. [2024-06-27 20:43:00,118 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 338 selfloop transitions, 19 changer transitions 0/359 dead transitions. [2024-06-27 20:43:00,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 359 transitions, 5253 flow [2024-06-27 20:43:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:43:00,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-27 20:43:00,119 INFO L175 Difference]: Start difference. First operand has 332 places, 347 transitions, 4513 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:43:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 359 transitions, 5253 flow [2024-06-27 20:43:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 359 transitions, 5162 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:00,610 INFO L231 Difference]: Finished difference. Result has 334 places, 347 transitions, 4464 flow [2024-06-27 20:43:00,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4464, PETRI_PLACES=334, PETRI_TRANSITIONS=347} [2024-06-27 20:43:00,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-27 20:43:00,611 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 347 transitions, 4464 flow [2024-06-27 20:43:00,611 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 20:43:00,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:00,612 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 20:43:00,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:43:00,612 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 20:43:00,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash 481580123, now seen corresponding path program 20 times [2024-06-27 20:43:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734735683] [2024-06-27 20:43:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:01,458 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 20:43:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734735683] [2024-06-27 20:43:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734735683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163405654] [2024-06-27 20:43:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:01,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:01,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 347 transitions, 4464 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 20:43:01,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:02,111 INFO L124 PetriNetUnfolderBase]: 913/1646 cut-off events. [2024-06-27 20:43:02,112 INFO L125 PetriNetUnfolderBase]: For 124079/124079 co-relation queries the response was YES. [2024-06-27 20:43:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10632 conditions, 1646 events. 913/1646 cut-off events. For 124079/124079 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9617 event pairs, 233 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 10474. Up to 1602 conditions per place. [2024-06-27 20:43:02,131 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 333 selfloop transitions, 22 changer transitions 0/357 dead transitions. [2024-06-27 20:43:02,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 357 transitions, 5196 flow [2024-06-27 20:43:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:43:02,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-27 20:43:02,133 INFO L175 Difference]: Start difference. First operand has 334 places, 347 transitions, 4464 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:43:02,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 357 transitions, 5196 flow [2024-06-27 20:43:02,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 357 transitions, 5097 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:02,601 INFO L231 Difference]: Finished difference. Result has 334 places, 347 transitions, 4413 flow [2024-06-27 20:43:02,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4365, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4413, PETRI_PLACES=334, PETRI_TRANSITIONS=347} [2024-06-27 20:43:02,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-27 20:43:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 347 transitions, 4413 flow [2024-06-27 20:43:02,602 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 20:43:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:02,602 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 20:43:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:43:02,602 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 20:43:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1652354753, now seen corresponding path program 20 times [2024-06-27 20:43:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364609584] [2024-06-27 20:43:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:02,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:03,521 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 20:43:03,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364609584] [2024-06-27 20:43:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364609584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:03,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:03,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707061322] [2024-06-27 20:43:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:03,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:03,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 347 transitions, 4413 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 20:43:03,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:03,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:03,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:04,059 INFO L124 PetriNetUnfolderBase]: 919/1656 cut-off events. [2024-06-27 20:43:04,060 INFO L125 PetriNetUnfolderBase]: For 126424/126424 co-relation queries the response was YES. [2024-06-27 20:43:04,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10626 conditions, 1656 events. 919/1656 cut-off events. For 126424/126424 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9669 event pairs, 221 based on Foata normal form. 2/1656 useless extension candidates. Maximal degree in co-relation 10469. Up to 1581 conditions per place. [2024-06-27 20:43:04,078 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 331 selfloop transitions, 29 changer transitions 0/362 dead transitions. [2024-06-27 20:43:04,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 362 transitions, 5219 flow [2024-06-27 20:43:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:43:04,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:43:04,079 INFO L175 Difference]: Start difference. First operand has 334 places, 347 transitions, 4413 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:43:04,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 362 transitions, 5219 flow [2024-06-27 20:43:04,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 362 transitions, 5153 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:04,584 INFO L231 Difference]: Finished difference. Result has 335 places, 349 transitions, 4472 flow [2024-06-27 20:43:04,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4472, PETRI_PLACES=335, PETRI_TRANSITIONS=349} [2024-06-27 20:43:04,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 20:43:04,585 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 349 transitions, 4472 flow [2024-06-27 20:43:04,585 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 20:43:04,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:04,585 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 20:43:04,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:43:04,586 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 20:43:04,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2065905677, now seen corresponding path program 21 times [2024-06-27 20:43:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407896135] [2024-06-27 20:43:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:05,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:05,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407896135] [2024-06-27 20:43:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407896135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:05,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355970227] [2024-06-27 20:43:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:05,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:05,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:05,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 349 transitions, 4472 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 20:43:05,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:05,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:05,956 INFO L124 PetriNetUnfolderBase]: 915/1650 cut-off events. [2024-06-27 20:43:05,956 INFO L125 PetriNetUnfolderBase]: For 114547/114547 co-relation queries the response was YES. [2024-06-27 20:43:05,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10352 conditions, 1650 events. 915/1650 cut-off events. For 114547/114547 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9643 event pairs, 220 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 10195. Up to 1558 conditions per place. [2024-06-27 20:43:05,976 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 328 selfloop transitions, 33 changer transitions 0/363 dead transitions. [2024-06-27 20:43:05,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 363 transitions, 5224 flow [2024-06-27 20:43:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:43:05,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:43:05,977 INFO L175 Difference]: Start difference. First operand has 335 places, 349 transitions, 4472 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:43:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 363 transitions, 5224 flow [2024-06-27 20:43:06,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 363 transitions, 5125 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:06,488 INFO L231 Difference]: Finished difference. Result has 337 places, 349 transitions, 4444 flow [2024-06-27 20:43:06,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4373, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4444, PETRI_PLACES=337, PETRI_TRANSITIONS=349} [2024-06-27 20:43:06,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-27 20:43:06,489 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 349 transitions, 4444 flow [2024-06-27 20:43:06,489 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 20:43:06,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:06,489 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 20:43:06,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:43:06,489 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 20:43:06,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash 240499217, now seen corresponding path program 21 times [2024-06-27 20:43:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574965159] [2024-06-27 20:43:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:07,159 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 20:43:07,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:07,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574965159] [2024-06-27 20:43:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574965159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:07,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11130005] [2024-06-27 20:43:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:07,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:07,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:07,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 349 transitions, 4444 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 20:43:07,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:07,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:07,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:07,812 INFO L124 PetriNetUnfolderBase]: 963/1748 cut-off events. [2024-06-27 20:43:07,812 INFO L125 PetriNetUnfolderBase]: For 128465/128465 co-relation queries the response was YES. [2024-06-27 20:43:07,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10937 conditions, 1748 events. 963/1748 cut-off events. For 128465/128465 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10478 event pairs, 154 based on Foata normal form. 2/1748 useless extension candidates. Maximal degree in co-relation 10779. Up to 1310 conditions per place. [2024-06-27 20:43:07,833 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 91 changer transitions 0/388 dead transitions. [2024-06-27 20:43:07,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 5648 flow [2024-06-27 20:43:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:43:07,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:43:07,834 INFO L175 Difference]: Start difference. First operand has 337 places, 349 transitions, 4444 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:43:07,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 5648 flow [2024-06-27 20:43:08,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 388 transitions, 5521 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:08,412 INFO L231 Difference]: Finished difference. Result has 343 places, 358 transitions, 4689 flow [2024-06-27 20:43:08,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4689, PETRI_PLACES=343, PETRI_TRANSITIONS=358} [2024-06-27 20:43:08,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-27 20:43:08,412 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 358 transitions, 4689 flow [2024-06-27 20:43:08,413 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 20:43:08,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:08,413 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 20:43:08,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:43:08,413 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 20:43:08,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1835535929, now seen corresponding path program 22 times [2024-06-27 20:43:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:08,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676627936] [2024-06-27 20:43:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:08,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:09,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676627936] [2024-06-27 20:43:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676627936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:09,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311308730] [2024-06-27 20:43:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:09,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:09,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 358 transitions, 4689 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 20:43:09,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:09,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:09,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:09,683 INFO L124 PetriNetUnfolderBase]: 987/1796 cut-off events. [2024-06-27 20:43:09,683 INFO L125 PetriNetUnfolderBase]: For 131100/131100 co-relation queries the response was YES. [2024-06-27 20:43:09,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11395 conditions, 1796 events. 987/1796 cut-off events. For 131100/131100 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10872 event pairs, 162 based on Foata normal form. 2/1796 useless extension candidates. Maximal degree in co-relation 11233. Up to 1526 conditions per place. [2024-06-27 20:43:09,704 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 302 selfloop transitions, 81 changer transitions 0/385 dead transitions. [2024-06-27 20:43:09,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 385 transitions, 5609 flow [2024-06-27 20:43:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:43:09,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 20:43:09,706 INFO L175 Difference]: Start difference. First operand has 343 places, 358 transitions, 4689 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:43:09,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 385 transitions, 5609 flow [2024-06-27 20:43:10,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 385 transitions, 5443 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 20:43:10,307 INFO L231 Difference]: Finished difference. Result has 351 places, 365 transitions, 4795 flow [2024-06-27 20:43:10,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4795, PETRI_PLACES=351, PETRI_TRANSITIONS=365} [2024-06-27 20:43:10,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-27 20:43:10,307 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 365 transitions, 4795 flow [2024-06-27 20:43:10,307 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 20:43:10,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:10,308 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 20:43:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:43:10,308 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 20:43:10,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash 359463923, now seen corresponding path program 23 times [2024-06-27 20:43:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506589466] [2024-06-27 20:43:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:10,837 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 20:43:10,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:10,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506589466] [2024-06-27 20:43:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506589466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:43:10,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022810411] [2024-06-27 20:43:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:10,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:43:10,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:43:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:43:10,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 365 transitions, 4795 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:11,518 INFO L124 PetriNetUnfolderBase]: 988/1797 cut-off events. [2024-06-27 20:43:11,518 INFO L125 PetriNetUnfolderBase]: For 133548/133548 co-relation queries the response was YES. [2024-06-27 20:43:11,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 1797 events. 988/1797 cut-off events. For 133548/133548 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10854 event pairs, 142 based on Foata normal form. 4/1799 useless extension candidates. Maximal degree in co-relation 11036. Up to 1331 conditions per place. [2024-06-27 20:43:11,540 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 264 selfloop transitions, 117 changer transitions 0/383 dead transitions. [2024-06-27 20:43:11,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 383 transitions, 5626 flow [2024-06-27 20:43:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:43:11,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:43:11,542 INFO L175 Difference]: Start difference. First operand has 351 places, 365 transitions, 4795 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:43:11,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 383 transitions, 5626 flow [2024-06-27 20:43:12,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 383 transitions, 5460 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:43:12,203 INFO L231 Difference]: Finished difference. Result has 355 places, 366 transitions, 4892 flow [2024-06-27 20:43:12,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4892, PETRI_PLACES=355, PETRI_TRANSITIONS=366} [2024-06-27 20:43:12,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-27 20:43:12,204 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 366 transitions, 4892 flow [2024-06-27 20:43:12,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:12,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:12,205 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 20:43:12,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:43:12,205 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 20:43:12,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash -551306507, now seen corresponding path program 24 times [2024-06-27 20:43:12,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:12,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525842554] [2024-06-27 20:43:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:12,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:12,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525842554] [2024-06-27 20:43:12,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525842554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:12,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:12,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:43:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414483158] [2024-06-27 20:43:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:43:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:43:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:43:12,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:12,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 366 transitions, 4892 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:12,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:12,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:12,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:13,338 INFO L124 PetriNetUnfolderBase]: 1005/1834 cut-off events. [2024-06-27 20:43:13,338 INFO L125 PetriNetUnfolderBase]: For 123873/123873 co-relation queries the response was YES. [2024-06-27 20:43:13,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11471 conditions, 1834 events. 1005/1834 cut-off events. For 123873/123873 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11184 event pairs, 174 based on Foata normal form. 2/1834 useless extension candidates. Maximal degree in co-relation 11306. Up to 1199 conditions per place. [2024-06-27 20:43:13,361 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 272 selfloop transitions, 120 changer transitions 0/394 dead transitions. [2024-06-27 20:43:13,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 394 transitions, 5810 flow [2024-06-27 20:43:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 20:43:13,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 20:43:13,363 INFO L175 Difference]: Start difference. First operand has 355 places, 366 transitions, 4892 flow. Second operand 10 states and 116 transitions. [2024-06-27 20:43:13,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 394 transitions, 5810 flow [2024-06-27 20:43:13,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 394 transitions, 5573 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:13,876 INFO L231 Difference]: Finished difference. Result has 360 places, 370 transitions, 5014 flow [2024-06-27 20:43:13,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5014, PETRI_PLACES=360, PETRI_TRANSITIONS=370} [2024-06-27 20:43:13,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 20:43:13,877 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 370 transitions, 5014 flow [2024-06-27 20:43:13,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:13,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:13,877 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 20:43:13,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:43:13,877 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 20:43:13,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1901699499, now seen corresponding path program 25 times [2024-06-27 20:43:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79699644] [2024-06-27 20:43:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:13,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:14,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79699644] [2024-06-27 20:43:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79699644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:43:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902735729] [2024-06-27 20:43:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:43:14,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:14,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:43:14,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:43:14,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:14,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 370 transitions, 5014 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:14,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:14,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:14,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:15,166 INFO L124 PetriNetUnfolderBase]: 1002/1829 cut-off events. [2024-06-27 20:43:15,166 INFO L125 PetriNetUnfolderBase]: For 111534/111534 co-relation queries the response was YES. [2024-06-27 20:43:15,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 1829 events. 1002/1829 cut-off events. For 111534/111534 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11136 event pairs, 158 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 11144. Up to 913 conditions per place. [2024-06-27 20:43:15,188 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 248 selfloop transitions, 137 changer transitions 0/387 dead transitions. [2024-06-27 20:43:15,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 387 transitions, 5824 flow [2024-06-27 20:43:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:43:15,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:43:15,189 INFO L175 Difference]: Start difference. First operand has 360 places, 370 transitions, 5014 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:43:15,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 387 transitions, 5824 flow [2024-06-27 20:43:15,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 387 transitions, 5609 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 20:43:15,733 INFO L231 Difference]: Finished difference. Result has 364 places, 370 transitions, 5077 flow [2024-06-27 20:43:15,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5077, PETRI_PLACES=364, PETRI_TRANSITIONS=370} [2024-06-27 20:43:15,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-27 20:43:15,734 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 370 transitions, 5077 flow [2024-06-27 20:43:15,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:15,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:15,734 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 20:43:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:43:15,735 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 20:43:15,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1828259677, now seen corresponding path program 22 times [2024-06-27 20:43:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:15,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240382224] [2024-06-27 20:43:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:16,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:16,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240382224] [2024-06-27 20:43:16,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240382224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:16,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:16,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:43:16,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048859744] [2024-06-27 20:43:16,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:16,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:43:16,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:16,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:43:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:43:16,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:16,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 370 transitions, 5077 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:16,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:16,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:16,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:17,150 INFO L124 PetriNetUnfolderBase]: 998/1823 cut-off events. [2024-06-27 20:43:17,150 INFO L125 PetriNetUnfolderBase]: For 98973/98973 co-relation queries the response was YES. [2024-06-27 20:43:17,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11140 conditions, 1823 events. 998/1823 cut-off events. For 98973/98973 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11114 event pairs, 145 based on Foata normal form. 2/1823 useless extension candidates. Maximal degree in co-relation 10973. Up to 1423 conditions per place. [2024-06-27 20:43:17,173 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 283 selfloop transitions, 106 changer transitions 0/391 dead transitions. [2024-06-27 20:43:17,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 391 transitions, 5922 flow [2024-06-27 20:43:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 20:43:17,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 20:43:17,174 INFO L175 Difference]: Start difference. First operand has 364 places, 370 transitions, 5077 flow. Second operand 10 states and 129 transitions. [2024-06-27 20:43:17,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 391 transitions, 5922 flow [2024-06-27 20:43:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 391 transitions, 5267 flow, removed 22 selfloop flow, removed 18 redundant places. [2024-06-27 20:43:17,607 INFO L231 Difference]: Finished difference. Result has 356 places, 371 transitions, 4657 flow [2024-06-27 20:43:17,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4657, PETRI_PLACES=356, PETRI_TRANSITIONS=371} [2024-06-27 20:43:17,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-27 20:43:17,607 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 371 transitions, 4657 flow [2024-06-27 20:43:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:17,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:17,608 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 20:43:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:43:17,608 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 20:43:17,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1700312977, now seen corresponding path program 1 times [2024-06-27 20:43:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693851881] [2024-06-27 20:43:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693851881] [2024-06-27 20:43:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693851881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572052541] [2024-06-27 20:43:18,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:18,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:18,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 371 transitions, 4657 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 20:43:18,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:18,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:18,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:19,153 INFO L124 PetriNetUnfolderBase]: 1025/1884 cut-off events. [2024-06-27 20:43:19,153 INFO L125 PetriNetUnfolderBase]: For 176656/176656 co-relation queries the response was YES. [2024-06-27 20:43:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11017 conditions, 1884 events. 1025/1884 cut-off events. For 176656/176656 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11514 event pairs, 124 based on Foata normal form. 8/1890 useless extension candidates. Maximal degree in co-relation 10860. Up to 897 conditions per place. [2024-06-27 20:43:19,174 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 171 changer transitions 33/399 dead transitions. [2024-06-27 20:43:19,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 399 transitions, 5749 flow [2024-06-27 20:43:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:43:19,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:43:19,175 INFO L175 Difference]: Start difference. First operand has 356 places, 371 transitions, 4657 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:43:19,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 399 transitions, 5749 flow [2024-06-27 20:43:19,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 399 transitions, 4830 flow, removed 35 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:19,806 INFO L231 Difference]: Finished difference. Result has 354 places, 351 transitions, 3919 flow [2024-06-27 20:43:19,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3919, PETRI_PLACES=354, PETRI_TRANSITIONS=351} [2024-06-27 20:43:19,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-27 20:43:19,806 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 351 transitions, 3919 flow [2024-06-27 20:43:19,806 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 20:43:19,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:19,807 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 20:43:19,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:43:19,807 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 20:43:19,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:19,807 INFO L85 PathProgramCache]: Analyzing trace with hash 100552973, now seen corresponding path program 2 times [2024-06-27 20:43:19,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:19,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077866695] [2024-06-27 20:43:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:19,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077866695] [2024-06-27 20:43:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077866695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:20,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994983070] [2024-06-27 20:43:20,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:20,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:20,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:20,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:20,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 351 transitions, 3919 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 20:43:20,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:20,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:20,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:21,276 INFO L124 PetriNetUnfolderBase]: 995/1836 cut-off events. [2024-06-27 20:43:21,277 INFO L125 PetriNetUnfolderBase]: For 230172/230172 co-relation queries the response was YES. [2024-06-27 20:43:21,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10855 conditions, 1836 events. 995/1836 cut-off events. For 230172/230172 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11123 event pairs, 124 based on Foata normal form. 8/1842 useless extension candidates. Maximal degree in co-relation 10715. Up to 908 conditions per place. [2024-06-27 20:43:21,297 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 174 changer transitions 22/388 dead transitions. [2024-06-27 20:43:21,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 5066 flow [2024-06-27 20:43:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 20:43:21,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 20:43:21,298 INFO L175 Difference]: Start difference. First operand has 354 places, 351 transitions, 3919 flow. Second operand 11 states and 131 transitions. [2024-06-27 20:43:21,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 5066 flow [2024-06-27 20:43:21,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 388 transitions, 4806 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:21,877 INFO L231 Difference]: Finished difference. Result has 337 places, 344 transitions, 3949 flow [2024-06-27 20:43:21,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3949, PETRI_PLACES=337, PETRI_TRANSITIONS=344} [2024-06-27 20:43:21,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-27 20:43:21,877 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 344 transitions, 3949 flow [2024-06-27 20:43:21,877 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 20:43:21,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:21,877 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 20:43:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:43:21,878 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 20:43:21,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash 104127893, now seen corresponding path program 3 times [2024-06-27 20:43:21,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:21,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665871449] [2024-06-27 20:43:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665871449] [2024-06-27 20:43:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665871449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116133356] [2024-06-27 20:43:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:22,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:22,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 344 transitions, 3949 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 20:43:22,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:22,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:22,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:23,356 INFO L124 PetriNetUnfolderBase]: 953/1758 cut-off events. [2024-06-27 20:43:23,357 INFO L125 PetriNetUnfolderBase]: For 210809/210809 co-relation queries the response was YES. [2024-06-27 20:43:23,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 1758 events. 953/1758 cut-off events. For 210809/210809 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10517 event pairs, 118 based on Foata normal form. 8/1764 useless extension candidates. Maximal degree in co-relation 10542. Up to 908 conditions per place. [2024-06-27 20:43:23,377 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 174 changer transitions 15/375 dead transitions. [2024-06-27 20:43:23,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 375 transitions, 5012 flow [2024-06-27 20:43:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:43:23,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:43:23,378 INFO L175 Difference]: Start difference. First operand has 337 places, 344 transitions, 3949 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:43:23,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 375 transitions, 5012 flow [2024-06-27 20:43:24,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 375 transitions, 4594 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:24,058 INFO L231 Difference]: Finished difference. Result has 333 places, 339 transitions, 3819 flow [2024-06-27 20:43:24,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3819, PETRI_PLACES=333, PETRI_TRANSITIONS=339} [2024-06-27 20:43:24,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-27 20:43:24,058 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 339 transitions, 3819 flow [2024-06-27 20:43:24,058 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 20:43:24,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:24,060 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 20:43:24,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:43:24,061 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 20:43:24,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash 104272043, now seen corresponding path program 4 times [2024-06-27 20:43:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175108570] [2024-06-27 20:43:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:24,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:24,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175108570] [2024-06-27 20:43:24,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175108570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:24,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:24,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:24,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366914370] [2024-06-27 20:43:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:24,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:24,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:24,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:24,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:24,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:24,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 339 transitions, 3819 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:24,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:24,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:24,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:25,401 INFO L124 PetriNetUnfolderBase]: 913/1686 cut-off events. [2024-06-27 20:43:25,401 INFO L125 PetriNetUnfolderBase]: For 210737/210737 co-relation queries the response was YES. [2024-06-27 20:43:25,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9381 conditions, 1686 events. 913/1686 cut-off events. For 210737/210737 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10035 event pairs, 136 based on Foata normal form. 16/1700 useless extension candidates. Maximal degree in co-relation 9249. Up to 872 conditions per place. [2024-06-27 20:43:25,418 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 149 changer transitions 28/359 dead transitions. [2024-06-27 20:43:25,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 359 transitions, 4581 flow [2024-06-27 20:43:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 20:43:25,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:43:25,420 INFO L175 Difference]: Start difference. First operand has 333 places, 339 transitions, 3819 flow. Second operand 10 states and 124 transitions. [2024-06-27 20:43:25,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 359 transitions, 4581 flow [2024-06-27 20:43:25,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 359 transitions, 4196 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:25,906 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 3468 flow [2024-06-27 20:43:25,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3434, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3468, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2024-06-27 20:43:25,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 20:43:25,907 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 3468 flow [2024-06-27 20:43:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:25,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:25,908 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 20:43:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:43:25,908 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 20:43:25,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1809122577, now seen corresponding path program 5 times [2024-06-27 20:43:25,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687377156] [2024-06-27 20:43:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:26,895 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 20:43:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687377156] [2024-06-27 20:43:26,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687377156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:26,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:26,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286666165] [2024-06-27 20:43:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:26,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:26,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:26,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 3468 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 20:43:26,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:26,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:26,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:27,562 INFO L124 PetriNetUnfolderBase]: 859/1569 cut-off events. [2024-06-27 20:43:27,562 INFO L125 PetriNetUnfolderBase]: For 173601/173601 co-relation queries the response was YES. [2024-06-27 20:43:27,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 1569 events. 859/1569 cut-off events. For 173601/173601 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9106 event pairs, 96 based on Foata normal form. 10/1577 useless extension candidates. Maximal degree in co-relation 8632. Up to 1205 conditions per place. [2024-06-27 20:43:27,578 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 239 selfloop transitions, 84 changer transitions 13/338 dead transitions. [2024-06-27 20:43:27,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 338 transitions, 4192 flow [2024-06-27 20:43:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:43:27,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:43:27,579 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 3468 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:43:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 338 transitions, 4192 flow [2024-06-27 20:43:27,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 338 transitions, 3768 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-27 20:43:27,914 INFO L231 Difference]: Finished difference. Result has 314 places, 314 transitions, 3182 flow [2024-06-27 20:43:27,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3182, PETRI_PLACES=314, PETRI_TRANSITIONS=314} [2024-06-27 20:43:27,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 20:43:27,915 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 314 transitions, 3182 flow [2024-06-27 20:43:27,915 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 20:43:27,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:27,915 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 20:43:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:43:27,915 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 20:43:27,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1954618939, now seen corresponding path program 6 times [2024-06-27 20:43:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:27,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006217928] [2024-06-27 20:43:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:28,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006217928] [2024-06-27 20:43:28,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006217928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:28,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:28,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13174051] [2024-06-27 20:43:28,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:28,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:29,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:29,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 314 transitions, 3182 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 20:43:29,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:29,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:29,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:29,613 INFO L124 PetriNetUnfolderBase]: 845/1551 cut-off events. [2024-06-27 20:43:29,614 INFO L125 PetriNetUnfolderBase]: For 172801/172801 co-relation queries the response was YES. [2024-06-27 20:43:29,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8312 conditions, 1551 events. 845/1551 cut-off events. For 172801/172801 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9007 event pairs, 144 based on Foata normal form. 10/1559 useless extension candidates. Maximal degree in co-relation 8190. Up to 860 conditions per place. [2024-06-27 20:43:29,628 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 145 changer transitions 11/336 dead transitions. [2024-06-27 20:43:29,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 336 transitions, 3906 flow [2024-06-27 20:43:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:43:29,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-27 20:43:29,629 INFO L175 Difference]: Start difference. First operand has 314 places, 314 transitions, 3182 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:43:29,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 336 transitions, 3906 flow [2024-06-27 20:43:29,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 336 transitions, 3734 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:29,993 INFO L231 Difference]: Finished difference. Result has 313 places, 310 transitions, 3275 flow [2024-06-27 20:43:29,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3275, PETRI_PLACES=313, PETRI_TRANSITIONS=310} [2024-06-27 20:43:29,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-27 20:43:29,994 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 310 transitions, 3275 flow [2024-06-27 20:43:29,994 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 20:43:29,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:29,994 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 20:43:29,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:43:29,994 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 20:43:29,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:29,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1640827041, now seen corresponding path program 7 times [2024-06-27 20:43:29,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:29,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093214001] [2024-06-27 20:43:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:31,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:31,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093214001] [2024-06-27 20:43:31,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093214001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:31,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:31,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:31,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474149645] [2024-06-27 20:43:31,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:31,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:31,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:31,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:31,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:31,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 310 transitions, 3275 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 20:43:31,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:31,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:31,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:31,739 INFO L124 PetriNetUnfolderBase]: 831/1529 cut-off events. [2024-06-27 20:43:31,739 INFO L125 PetriNetUnfolderBase]: For 158064/158064 co-relation queries the response was YES. [2024-06-27 20:43:31,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1529 events. 831/1529 cut-off events. For 158064/158064 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8873 event pairs, 140 based on Foata normal form. 8/1535 useless extension candidates. Maximal degree in co-relation 8252. Up to 840 conditions per place. [2024-06-27 20:43:31,753 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 139 changer transitions 14/331 dead transitions. [2024-06-27 20:43:31,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 331 transitions, 3983 flow [2024-06-27 20:43:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:43:31,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:43:31,754 INFO L175 Difference]: Start difference. First operand has 313 places, 310 transitions, 3275 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:43:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 331 transitions, 3983 flow [2024-06-27 20:43:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 331 transitions, 3685 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:32,074 INFO L231 Difference]: Finished difference. Result has 310 places, 304 transitions, 3188 flow [2024-06-27 20:43:32,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3188, PETRI_PLACES=310, PETRI_TRANSITIONS=304} [2024-06-27 20:43:32,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-27 20:43:32,075 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 304 transitions, 3188 flow [2024-06-27 20:43:32,075 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 20:43:32,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:32,075 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 20:43:32,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:43:32,075 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 20:43:32,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash 632949525, now seen corresponding path program 8 times [2024-06-27 20:43:32,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:32,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529806739] [2024-06-27 20:43:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:32,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529806739] [2024-06-27 20:43:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529806739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:32,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582866807] [2024-06-27 20:43:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:33,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:33,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 304 transitions, 3188 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:33,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:33,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:33,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:33,565 INFO L124 PetriNetUnfolderBase]: 846/1562 cut-off events. [2024-06-27 20:43:33,566 INFO L125 PetriNetUnfolderBase]: For 213497/213497 co-relation queries the response was YES. [2024-06-27 20:43:33,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9436 conditions, 1562 events. 846/1562 cut-off events. For 213497/213497 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9048 event pairs, 103 based on Foata normal form. 8/1568 useless extension candidates. Maximal degree in co-relation 9316. Up to 1065 conditions per place. [2024-06-27 20:43:33,580 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 86 changer transitions 13/329 dead transitions. [2024-06-27 20:43:33,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 329 transitions, 4124 flow [2024-06-27 20:43:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 20:43:33,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:43:33,582 INFO L175 Difference]: Start difference. First operand has 310 places, 304 transitions, 3188 flow. Second operand 10 states and 124 transitions. [2024-06-27 20:43:33,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 329 transitions, 4124 flow [2024-06-27 20:43:34,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 329 transitions, 3834 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:34,222 INFO L231 Difference]: Finished difference. Result has 305 places, 299 transitions, 3029 flow [2024-06-27 20:43:34,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=295, 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=3029, PETRI_PLACES=305, PETRI_TRANSITIONS=299} [2024-06-27 20:43:34,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-27 20:43:34,223 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 299 transitions, 3029 flow [2024-06-27 20:43:34,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:34,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:34,223 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 20:43:34,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:43:34,223 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 20:43:34,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1949250979, now seen corresponding path program 9 times [2024-06-27 20:43:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639859864] [2024-06-27 20:43:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:34,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639859864] [2024-06-27 20:43:35,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639859864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:35,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:35,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565557531] [2024-06-27 20:43:35,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:35,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:35,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:35,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 299 transitions, 3029 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 20:43:35,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:35,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:35,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:35,804 INFO L124 PetriNetUnfolderBase]: 826/1526 cut-off events. [2024-06-27 20:43:35,804 INFO L125 PetriNetUnfolderBase]: For 205673/205673 co-relation queries the response was YES. [2024-06-27 20:43:35,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 1526 events. 826/1526 cut-off events. For 205673/205673 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8773 event pairs, 149 based on Foata normal form. 8/1532 useless extension candidates. Maximal degree in co-relation 9002. Up to 778 conditions per place. [2024-06-27 20:43:35,818 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 137 changer transitions 10/325 dead transitions. [2024-06-27 20:43:35,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 325 transitions, 3955 flow [2024-06-27 20:43:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:43:35,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-27 20:43:35,819 INFO L175 Difference]: Start difference. First operand has 305 places, 299 transitions, 3029 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:43:35,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 325 transitions, 3955 flow [2024-06-27 20:43:36,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 325 transitions, 3764 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:36,381 INFO L231 Difference]: Finished difference. Result has 303 places, 295 transitions, 3079 flow [2024-06-27 20:43:36,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3079, PETRI_PLACES=303, PETRI_TRANSITIONS=295} [2024-06-27 20:43:36,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-27 20:43:36,382 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 295 transitions, 3079 flow [2024-06-27 20:43:36,382 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 20:43:36,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:36,382 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 20:43:36,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:43:36,382 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 20:43:36,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash 633099255, now seen corresponding path program 10 times [2024-06-27 20:43:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458501209] [2024-06-27 20:43:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:36,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:37,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458501209] [2024-06-27 20:43:37,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458501209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:37,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:37,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118788697] [2024-06-27 20:43:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:37,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:37,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:37,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:37,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 295 transitions, 3079 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 20:43:37,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:37,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:37,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:38,000 INFO L124 PetriNetUnfolderBase]: 789/1455 cut-off events. [2024-06-27 20:43:38,000 INFO L125 PetriNetUnfolderBase]: For 157825/157825 co-relation queries the response was YES. [2024-06-27 20:43:38,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 1455 events. 789/1455 cut-off events. For 157825/157825 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8334 event pairs, 140 based on Foata normal form. 10/1463 useless extension candidates. Maximal degree in co-relation 7854. Up to 778 conditions per place. [2024-06-27 20:43:38,012 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 165 selfloop transitions, 133 changer transitions 17/317 dead transitions. [2024-06-27 20:43:38,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 317 transitions, 3765 flow [2024-06-27 20:43:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:43:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:43:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-27 20:43:38,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34739454094292804 [2024-06-27 20:43:38,014 INFO L175 Difference]: Start difference. First operand has 303 places, 295 transitions, 3079 flow. Second operand 13 states and 140 transitions. [2024-06-27 20:43:38,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 317 transitions, 3765 flow [2024-06-27 20:43:38,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 317 transitions, 3487 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:38,310 INFO L231 Difference]: Finished difference. Result has 302 places, 287 transitions, 3003 flow [2024-06-27 20:43:38,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3003, PETRI_PLACES=302, PETRI_TRANSITIONS=287} [2024-06-27 20:43:38,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-27 20:43:38,322 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 287 transitions, 3003 flow [2024-06-27 20:43:38,322 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 20:43:38,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:38,322 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 20:43:38,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:43:38,323 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 20:43:38,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash 345148283, now seen corresponding path program 11 times [2024-06-27 20:43:38,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:38,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925039611] [2024-06-27 20:43:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:38,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:39,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925039611] [2024-06-27 20:43:39,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925039611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:39,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:39,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486005252] [2024-06-27 20:43:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:39,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:39,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:39,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:39,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 287 transitions, 3003 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 20:43:39,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:39,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:39,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:39,933 INFO L124 PetriNetUnfolderBase]: 793/1467 cut-off events. [2024-06-27 20:43:39,933 INFO L125 PetriNetUnfolderBase]: For 186961/186961 co-relation queries the response was YES. [2024-06-27 20:43:39,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8754 conditions, 1467 events. 793/1467 cut-off events. For 186961/186961 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8342 event pairs, 98 based on Foata normal form. 8/1473 useless extension candidates. Maximal degree in co-relation 8638. Up to 983 conditions per place. [2024-06-27 20:43:39,946 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 76 changer transitions 18/312 dead transitions. [2024-06-27 20:43:39,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 312 transitions, 3893 flow [2024-06-27 20:43:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:43:39,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:43:39,947 INFO L175 Difference]: Start difference. First operand has 302 places, 287 transitions, 3003 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:43:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 312 transitions, 3893 flow [2024-06-27 20:43:40,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 312 transitions, 3601 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:40,398 INFO L231 Difference]: Finished difference. Result has 294 places, 279 transitions, 2814 flow [2024-06-27 20:43:40,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2814, PETRI_PLACES=294, PETRI_TRANSITIONS=279} [2024-06-27 20:43:40,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-27 20:43:40,399 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 279 transitions, 2814 flow [2024-06-27 20:43:40,399 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 20:43:40,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:40,399 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 20:43:40,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:43:40,400 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 20:43:40,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1664880507, now seen corresponding path program 12 times [2024-06-27 20:43:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:40,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142896761] [2024-06-27 20:43:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142896761] [2024-06-27 20:43:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142896761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082918751] [2024-06-27 20:43:41,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:41,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:41,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:41,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 279 transitions, 2814 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 20:43:41,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:41,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:41,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:41,908 INFO L124 PetriNetUnfolderBase]: 743/1369 cut-off events. [2024-06-27 20:43:41,909 INFO L125 PetriNetUnfolderBase]: For 135573/135573 co-relation queries the response was YES. [2024-06-27 20:43:41,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7436 conditions, 1369 events. 743/1369 cut-off events. For 135573/135573 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7660 event pairs, 76 based on Foata normal form. 8/1375 useless extension candidates. Maximal degree in co-relation 7323. Up to 983 conditions per place. [2024-06-27 20:43:41,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 72 changer transitions 21/299 dead transitions. [2024-06-27 20:43:41,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 299 transitions, 3456 flow [2024-06-27 20:43:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:43:41,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:43:41,923 INFO L175 Difference]: Start difference. First operand has 294 places, 279 transitions, 2814 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:43:41,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 299 transitions, 3456 flow [2024-06-27 20:43:42,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 299 transitions, 3300 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:42,183 INFO L231 Difference]: Finished difference. Result has 287 places, 270 transitions, 2721 flow [2024-06-27 20:43:42,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2721, PETRI_PLACES=287, PETRI_TRANSITIONS=270} [2024-06-27 20:43:42,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-27 20:43:42,184 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 270 transitions, 2721 flow [2024-06-27 20:43:42,184 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 20:43:42,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:42,184 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 20:43:42,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:43:42,184 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 20:43:42,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash 472412429, now seen corresponding path program 13 times [2024-06-27 20:43:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:42,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132670791] [2024-06-27 20:43:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:42,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132670791] [2024-06-27 20:43:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132670791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545483028] [2024-06-27 20:43:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:43,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:43,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 270 transitions, 2721 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:43,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:43,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:43,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:43,537 INFO L124 PetriNetUnfolderBase]: 741/1367 cut-off events. [2024-06-27 20:43:43,537 INFO L125 PetriNetUnfolderBase]: For 161740/161740 co-relation queries the response was YES. [2024-06-27 20:43:43,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8100 conditions, 1367 events. 741/1367 cut-off events. For 161740/161740 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7573 event pairs, 93 based on Foata normal form. 8/1373 useless extension candidates. Maximal degree in co-relation 7991. Up to 583 conditions per place. [2024-06-27 20:43:43,551 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 128 changer transitions 16/297 dead transitions. [2024-06-27 20:43:43,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 297 transitions, 3591 flow [2024-06-27 20:43:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 20:43:43,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 20:43:43,552 INFO L175 Difference]: Start difference. First operand has 287 places, 270 transitions, 2721 flow. Second operand 10 states and 119 transitions. [2024-06-27 20:43:43,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 297 transitions, 3591 flow [2024-06-27 20:43:43,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 297 transitions, 3425 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:44,002 INFO L231 Difference]: Finished difference. Result has 274 places, 264 transitions, 2767 flow [2024-06-27 20:43:44,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2767, PETRI_PLACES=274, PETRI_TRANSITIONS=264} [2024-06-27 20:43:44,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-27 20:43:44,003 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 264 transitions, 2767 flow [2024-06-27 20:43:44,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:44,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:44,003 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 20:43:44,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:43:44,003 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 20:43:44,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash 476131499, now seen corresponding path program 14 times [2024-06-27 20:43:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:44,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809873839] [2024-06-27 20:43:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:44,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:44,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:44,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809873839] [2024-06-27 20:43:44,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809873839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:44,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:44,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:44,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917011899] [2024-06-27 20:43:44,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:44,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:44,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:44,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:44,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 264 transitions, 2767 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:44,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:44,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:44,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:45,293 INFO L124 PetriNetUnfolderBase]: 741/1367 cut-off events. [2024-06-27 20:43:45,294 INFO L125 PetriNetUnfolderBase]: For 205329/205329 co-relation queries the response was YES. [2024-06-27 20:43:45,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9226 conditions, 1367 events. 741/1367 cut-off events. For 205329/205329 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7516 event pairs, 103 based on Foata normal form. 8/1373 useless extension candidates. Maximal degree in co-relation 9120. Up to 656 conditions per place. [2024-06-27 20:43:45,306 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 141 changer transitions 9/291 dead transitions. [2024-06-27 20:43:45,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 291 transitions, 3621 flow [2024-06-27 20:43:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 20:43:45,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:43:45,307 INFO L175 Difference]: Start difference. First operand has 274 places, 264 transitions, 2767 flow. Second operand 10 states and 124 transitions. [2024-06-27 20:43:45,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 291 transitions, 3621 flow [2024-06-27 20:43:45,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 291 transitions, 3438 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:45,700 INFO L231 Difference]: Finished difference. Result has 270 places, 261 transitions, 2849 flow [2024-06-27 20:43:45,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2849, PETRI_PLACES=270, PETRI_TRANSITIONS=261} [2024-06-27 20:43:45,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:43:45,700 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 261 transitions, 2849 flow [2024-06-27 20:43:45,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:45,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:45,701 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 20:43:45,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 20:43:45,701 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 20:43:45,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash 476137079, now seen corresponding path program 15 times [2024-06-27 20:43:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:45,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084456158] [2024-06-27 20:43:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:46,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084456158] [2024-06-27 20:43:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084456158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:46,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:46,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216524792] [2024-06-27 20:43:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:46,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:46,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:46,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:46,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 261 transitions, 2849 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:46,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:46,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:46,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:46,871 INFO L124 PetriNetUnfolderBase]: 701/1291 cut-off events. [2024-06-27 20:43:46,871 INFO L125 PetriNetUnfolderBase]: For 159697/159697 co-relation queries the response was YES. [2024-06-27 20:43:46,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8068 conditions, 1291 events. 701/1291 cut-off events. For 159697/159697 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7032 event pairs, 93 based on Foata normal form. 12/1301 useless extension candidates. Maximal degree in co-relation 7964. Up to 654 conditions per place. [2024-06-27 20:43:46,882 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 131 selfloop transitions, 139 changer transitions 10/282 dead transitions. [2024-06-27 20:43:46,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 282 transitions, 3471 flow [2024-06-27 20:43:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 20:43:46,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 20:43:46,897 INFO L175 Difference]: Start difference. First operand has 270 places, 261 transitions, 2849 flow. Second operand 10 states and 119 transitions. [2024-06-27 20:43:46,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 282 transitions, 3471 flow [2024-06-27 20:43:47,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 282 transitions, 3178 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:47,234 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2792 flow [2024-06-27 20:43:47,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2792, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2024-06-27 20:43:47,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:43:47,234 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2792 flow [2024-06-27 20:43:47,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:47,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:47,235 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 20:43:47,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 20:43:47,235 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 20:43:47,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:47,235 INFO L85 PathProgramCache]: Analyzing trace with hash 475987349, now seen corresponding path program 16 times [2024-06-27 20:43:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534121472] [2024-06-27 20:43:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:47,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:48,057 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 20:43:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:48,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534121472] [2024-06-27 20:43:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534121472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:48,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:48,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:43:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971177183] [2024-06-27 20:43:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:43:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:43:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:43:48,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:48,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 2792 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:48,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:48,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:48,533 INFO L124 PetriNetUnfolderBase]: 685/1263 cut-off events. [2024-06-27 20:43:48,533 INFO L125 PetriNetUnfolderBase]: For 142981/142981 co-relation queries the response was YES. [2024-06-27 20:43:48,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7938 conditions, 1263 events. 685/1263 cut-off events. For 142981/142981 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6876 event pairs, 79 based on Foata normal form. 8/1269 useless extension candidates. Maximal degree in co-relation 7834. Up to 618 conditions per place. [2024-06-27 20:43:48,544 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 131 changer transitions 17/278 dead transitions. [2024-06-27 20:43:48,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 278 transitions, 3406 flow [2024-06-27 20:43:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:43:48,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:43:48,545 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2792 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:43:48,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 278 transitions, 3406 flow [2024-06-27 20:43:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 278 transitions, 3011 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:48,866 INFO L231 Difference]: Finished difference. Result has 266 places, 246 transitions, 2574 flow [2024-06-27 20:43:48,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2574, PETRI_PLACES=266, PETRI_TRANSITIONS=246} [2024-06-27 20:43:48,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 20:43:48,867 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 246 transitions, 2574 flow [2024-06-27 20:43:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:48,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:48,867 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 20:43:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 20:43:48,867 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 20:43:48,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1679865959, now seen corresponding path program 1 times [2024-06-27 20:43:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751712403] [2024-06-27 20:43:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:50,089 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 20:43:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751712403] [2024-06-27 20:43:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751712403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:50,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:50,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447995775] [2024-06-27 20:43:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:50,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:50,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:50,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 246 transitions, 2574 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 20:43:50,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:50,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:50,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:50,592 INFO L124 PetriNetUnfolderBase]: 649/1185 cut-off events. [2024-06-27 20:43:50,593 INFO L125 PetriNetUnfolderBase]: For 115586/115586 co-relation queries the response was YES. [2024-06-27 20:43:50,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 1185 events. 649/1185 cut-off events. For 115586/115586 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6272 event pairs, 61 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 7445. Up to 867 conditions per place. [2024-06-27 20:43:50,603 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 82 changer transitions 0/261 dead transitions. [2024-06-27 20:43:50,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 261 transitions, 3136 flow [2024-06-27 20:43:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:43:50,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:43:50,604 INFO L175 Difference]: Start difference. First operand has 266 places, 246 transitions, 2574 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:43:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 261 transitions, 3136 flow [2024-06-27 20:43:50,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 261 transitions, 2828 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:50,813 INFO L231 Difference]: Finished difference. Result has 258 places, 247 transitions, 2451 flow [2024-06-27 20:43:50,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2451, PETRI_PLACES=258, PETRI_TRANSITIONS=247} [2024-06-27 20:43:50,814 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-27 20:43:50,814 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 247 transitions, 2451 flow [2024-06-27 20:43:50,814 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 20:43:50,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:50,814 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 20:43:50,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 20:43:50,815 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 20:43:50,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1679875259, now seen corresponding path program 2 times [2024-06-27 20:43:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:50,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884464680] [2024-06-27 20:43:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884464680] [2024-06-27 20:43:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884464680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:52,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:52,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366275645] [2024-06-27 20:43:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:52,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:52,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:52,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:52,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 247 transitions, 2451 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 20:43:52,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:52,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:52,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:52,566 INFO L124 PetriNetUnfolderBase]: 660/1206 cut-off events. [2024-06-27 20:43:52,567 INFO L125 PetriNetUnfolderBase]: For 121183/121183 co-relation queries the response was YES. [2024-06-27 20:43:52,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7666 conditions, 1206 events. 660/1206 cut-off events. For 121183/121183 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6427 event pairs, 70 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 7563. Up to 831 conditions per place. [2024-06-27 20:43:52,577 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 85 changer transitions 0/264 dead transitions. [2024-06-27 20:43:52,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 264 transitions, 3217 flow [2024-06-27 20:43:52,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:43:52,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:43:52,578 INFO L175 Difference]: Start difference. First operand has 258 places, 247 transitions, 2451 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:43:52,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 264 transitions, 3217 flow [2024-06-27 20:43:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 264 transitions, 3044 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:43:52,818 INFO L231 Difference]: Finished difference. Result has 260 places, 249 transitions, 2487 flow [2024-06-27 20:43:52,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=260, PETRI_TRANSITIONS=249} [2024-06-27 20:43:52,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 20:43:52,818 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 249 transitions, 2487 flow [2024-06-27 20:43:52,818 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 20:43:52,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:52,819 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 20:43:52,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 20:43:52,819 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 20:43:52,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash 474329437, now seen corresponding path program 17 times [2024-06-27 20:43:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195133314] [2024-06-27 20:43:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:53,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:53,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195133314] [2024-06-27 20:43:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195133314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:53,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156232845] [2024-06-27 20:43:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:53,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:53,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 249 transitions, 2487 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 20:43:53,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:53,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:53,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:54,300 INFO L124 PetriNetUnfolderBase]: 676/1242 cut-off events. [2024-06-27 20:43:54,300 INFO L125 PetriNetUnfolderBase]: For 156082/156082 co-relation queries the response was YES. [2024-06-27 20:43:54,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7793 conditions, 1242 events. 676/1242 cut-off events. For 156082/156082 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6680 event pairs, 76 based on Foata normal form. 10/1250 useless extension candidates. Maximal degree in co-relation 7689. Up to 850 conditions per place. [2024-06-27 20:43:54,312 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 91 changer transitions 14/273 dead transitions. [2024-06-27 20:43:54,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 273 transitions, 3097 flow [2024-06-27 20:43:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:43:54,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:43:54,313 INFO L175 Difference]: Start difference. First operand has 260 places, 249 transitions, 2487 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:43:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 273 transitions, 3097 flow [2024-06-27 20:43:54,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 273 transitions, 2921 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:54,525 INFO L231 Difference]: Finished difference. Result has 264 places, 243 transitions, 2447 flow [2024-06-27 20:43:54,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2447, PETRI_PLACES=264, PETRI_TRANSITIONS=243} [2024-06-27 20:43:54,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 20:43:54,529 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 243 transitions, 2447 flow [2024-06-27 20:43:54,529 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 20:43:54,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:54,530 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 20:43:54,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 20:43:54,530 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 20:43:54,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash 620022029, now seen corresponding path program 18 times [2024-06-27 20:43:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:54,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025208097] [2024-06-27 20:43:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:54,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:55,433 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 20:43:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025208097] [2024-06-27 20:43:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025208097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:55,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:55,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429339518] [2024-06-27 20:43:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:55,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:55,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:55,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 243 transitions, 2447 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 20:43:55,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:55,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:55,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:56,036 INFO L124 PetriNetUnfolderBase]: 685/1269 cut-off events. [2024-06-27 20:43:56,036 INFO L125 PetriNetUnfolderBase]: For 192581/192581 co-relation queries the response was YES. [2024-06-27 20:43:56,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 1269 events. 685/1269 cut-off events. For 192581/192581 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6872 event pairs, 79 based on Foata normal form. 8/1275 useless extension candidates. Maximal degree in co-relation 8613. Up to 818 conditions per place. [2024-06-27 20:43:56,048 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 87 changer transitions 11/271 dead transitions. [2024-06-27 20:43:56,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 271 transitions, 3247 flow [2024-06-27 20:43:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:43:56,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:43:56,049 INFO L175 Difference]: Start difference. First operand has 264 places, 243 transitions, 2447 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:43:56,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 271 transitions, 3247 flow [2024-06-27 20:43:56,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 271 transitions, 3057 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:56,333 INFO L231 Difference]: Finished difference. Result has 262 places, 237 transitions, 2377 flow [2024-06-27 20:43:56,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2377, PETRI_PLACES=262, PETRI_TRANSITIONS=237} [2024-06-27 20:43:56,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-27 20:43:56,333 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 237 transitions, 2377 flow [2024-06-27 20:43:56,333 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 20:43:56,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:56,334 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 20:43:56,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 20:43:56,334 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 20:43:56,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:56,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1679598553, now seen corresponding path program 19 times [2024-06-27 20:43:56,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:56,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092311423] [2024-06-27 20:43:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:56,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:57,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:57,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092311423] [2024-06-27 20:43:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092311423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:57,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499627646] [2024-06-27 20:43:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:57,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:57,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:57,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:57,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 237 transitions, 2377 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 20:43:57,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:57,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:57,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:57,850 INFO L124 PetriNetUnfolderBase]: 675/1251 cut-off events. [2024-06-27 20:43:57,850 INFO L125 PetriNetUnfolderBase]: For 196544/196544 co-relation queries the response was YES. [2024-06-27 20:43:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 1251 events. 675/1251 cut-off events. For 196544/196544 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6763 event pairs, 83 based on Foata normal form. 10/1259 useless extension candidates. Maximal degree in co-relation 8481. Up to 877 conditions per place. [2024-06-27 20:43:57,860 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 77 changer transitions 14/257 dead transitions. [2024-06-27 20:43:57,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 257 transitions, 2937 flow [2024-06-27 20:43:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:43:57,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:43:57,861 INFO L175 Difference]: Start difference. First operand has 262 places, 237 transitions, 2377 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:43:57,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 257 transitions, 2937 flow [2024-06-27 20:43:58,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 2761 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:58,136 INFO L231 Difference]: Finished difference. Result has 259 places, 231 transitions, 2307 flow [2024-06-27 20:43:58,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2307, PETRI_PLACES=259, PETRI_TRANSITIONS=231} [2024-06-27 20:43:58,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 20:43:58,137 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 231 transitions, 2307 flow [2024-06-27 20:43:58,137 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 20:43:58,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:58,137 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 20:43:58,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 20:43:58,137 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 20:43:58,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1672456649, now seen corresponding path program 3 times [2024-06-27 20:43:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:58,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15154262] [2024-06-27 20:43:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:58,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:59,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15154262] [2024-06-27 20:43:59,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15154262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:59,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:59,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:59,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457056118] [2024-06-27 20:43:59,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:59,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:59,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:59,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:43:59,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 231 transitions, 2307 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 20:43:59,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:59,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:43:59,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:59,652 INFO L124 PetriNetUnfolderBase]: 643/1195 cut-off events. [2024-06-27 20:43:59,652 INFO L125 PetriNetUnfolderBase]: For 156979/156979 co-relation queries the response was YES. [2024-06-27 20:43:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8315 conditions, 1195 events. 643/1195 cut-off events. For 156979/156979 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6418 event pairs, 113 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 8213. Up to 670 conditions per place. [2024-06-27 20:43:59,662 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 123 changer transitions 0/247 dead transitions. [2024-06-27 20:43:59,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 247 transitions, 2845 flow [2024-06-27 20:43:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:43:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:43:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:43:59,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:43:59,664 INFO L175 Difference]: Start difference. First operand has 259 places, 231 transitions, 2307 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:43:59,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 247 transitions, 2845 flow [2024-06-27 20:43:59,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 247 transitions, 2687 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:59,877 INFO L231 Difference]: Finished difference. Result has 256 places, 232 transitions, 2418 flow [2024-06-27 20:43:59,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2418, PETRI_PLACES=256, PETRI_TRANSITIONS=232} [2024-06-27 20:43:59,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-27 20:43:59,877 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 232 transitions, 2418 flow [2024-06-27 20:43:59,878 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 20:43:59,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:59,878 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 20:43:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 20:43:59,878 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 20:43:59,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 620229419, now seen corresponding path program 20 times [2024-06-27 20:43:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:59,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478183303] [2024-06-27 20:43:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:59,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:00,858 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 20:44:00,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478183303] [2024-06-27 20:44:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478183303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:00,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689108404] [2024-06-27 20:44:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:00,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:00,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:00,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 232 transitions, 2418 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 20:44:00,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:00,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:00,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:01,460 INFO L124 PetriNetUnfolderBase]: 630/1172 cut-off events. [2024-06-27 20:44:01,460 INFO L125 PetriNetUnfolderBase]: For 146183/146183 co-relation queries the response was YES. [2024-06-27 20:44:01,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7482 conditions, 1172 events. 630/1172 cut-off events. For 146183/146183 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6308 event pairs, 88 based on Foata normal form. 10/1180 useless extension candidates. Maximal degree in co-relation 7381. Up to 599 conditions per place. [2024-06-27 20:44:01,470 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 117 changer transitions 12/255 dead transitions. [2024-06-27 20:44:01,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 255 transitions, 2990 flow [2024-06-27 20:44:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:44:01,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 20:44:01,471 INFO L175 Difference]: Start difference. First operand has 256 places, 232 transitions, 2418 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:44:01,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 255 transitions, 2990 flow [2024-06-27 20:44:01,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 255 transitions, 2735 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:01,664 INFO L231 Difference]: Finished difference. Result has 259 places, 226 transitions, 2348 flow [2024-06-27 20:44:01,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2348, PETRI_PLACES=259, PETRI_TRANSITIONS=226} [2024-06-27 20:44:01,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 20:44:01,665 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 226 transitions, 2348 flow [2024-06-27 20:44:01,665 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 20:44:01,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:01,665 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 20:44:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 20:44:01,665 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 20:44:01,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 468817327, now seen corresponding path program 21 times [2024-06-27 20:44:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:01,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913401840] [2024-06-27 20:44:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:02,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:02,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913401840] [2024-06-27 20:44:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913401840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:02,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:02,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957761928] [2024-06-27 20:44:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:02,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:02,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:02,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 226 transitions, 2348 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 20:44:02,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:02,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:02,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:03,148 INFO L124 PetriNetUnfolderBase]: 655/1231 cut-off events. [2024-06-27 20:44:03,149 INFO L125 PetriNetUnfolderBase]: For 180396/180396 co-relation queries the response was YES. [2024-06-27 20:44:03,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 1231 events. 655/1231 cut-off events. For 180396/180396 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6778 event pairs, 91 based on Foata normal form. 8/1237 useless extension candidates. Maximal degree in co-relation 8355. Up to 559 conditions per place. [2024-06-27 20:44:03,159 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 115 changer transitions 12/261 dead transitions. [2024-06-27 20:44:03,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 261 transitions, 3168 flow [2024-06-27 20:44:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 20:44:03,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 20:44:03,160 INFO L175 Difference]: Start difference. First operand has 259 places, 226 transitions, 2348 flow. Second operand 11 states and 135 transitions. [2024-06-27 20:44:03,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 261 transitions, 3168 flow [2024-06-27 20:44:03,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 261 transitions, 2915 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:03,401 INFO L231 Difference]: Finished difference. Result has 257 places, 227 transitions, 2337 flow [2024-06-27 20:44:03,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2337, PETRI_PLACES=257, PETRI_TRANSITIONS=227} [2024-06-27 20:44:03,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 20:44:03,401 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 227 transitions, 2337 flow [2024-06-27 20:44:03,401 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 20:44:03,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:03,401 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 20:44:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 20:44:03,402 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 20:44:03,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 468967057, now seen corresponding path program 22 times [2024-06-27 20:44:03,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:03,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541621920] [2024-06-27 20:44:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541621920] [2024-06-27 20:44:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541621920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992355382] [2024-06-27 20:44:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:04,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 227 transitions, 2337 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:04,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:04,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:04,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:04,714 INFO L124 PetriNetUnfolderBase]: 648/1226 cut-off events. [2024-06-27 20:44:04,715 INFO L125 PetriNetUnfolderBase]: For 214188/214188 co-relation queries the response was YES. [2024-06-27 20:44:04,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8197 conditions, 1226 events. 648/1226 cut-off events. For 214188/214188 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6785 event pairs, 92 based on Foata normal form. 20/1244 useless extension candidates. Maximal degree in co-relation 8095. Up to 621 conditions per place. [2024-06-27 20:44:04,727 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 129 changer transitions 21/249 dead transitions. [2024-06-27 20:44:04,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 249 transitions, 2895 flow [2024-06-27 20:44:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:44:04,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:44:04,728 INFO L175 Difference]: Start difference. First operand has 257 places, 227 transitions, 2337 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:44:04,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 249 transitions, 2895 flow [2024-06-27 20:44:04,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 2754 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:04,967 INFO L231 Difference]: Finished difference. Result has 255 places, 214 transitions, 2348 flow [2024-06-27 20:44:04,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2348, PETRI_PLACES=255, PETRI_TRANSITIONS=214} [2024-06-27 20:44:04,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 20:44:04,968 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 214 transitions, 2348 flow [2024-06-27 20:44:04,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:04,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:04,968 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 20:44:04,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 20:44:04,968 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 20:44:04,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash 614659649, now seen corresponding path program 23 times [2024-06-27 20:44:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993065380] [2024-06-27 20:44:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993065380] [2024-06-27 20:44:05,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993065380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:05,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:05,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888364310] [2024-06-27 20:44:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:05,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:05,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:05,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:05,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 214 transitions, 2348 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:05,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:05,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:05,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:06,181 INFO L124 PetriNetUnfolderBase]: 572/1086 cut-off events. [2024-06-27 20:44:06,182 INFO L125 PetriNetUnfolderBase]: For 135591/135591 co-relation queries the response was YES. [2024-06-27 20:44:06,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7125 conditions, 1086 events. 572/1086 cut-off events. For 135591/135591 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5875 event pairs, 66 based on Foata normal form. 8/1092 useless extension candidates. Maximal degree in co-relation 7025. Up to 525 conditions per place. [2024-06-27 20:44:06,191 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 117 changer transitions 25/235 dead transitions. [2024-06-27 20:44:06,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 235 transitions, 2872 flow [2024-06-27 20:44:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:44:06,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:44:06,192 INFO L175 Difference]: Start difference. First operand has 255 places, 214 transitions, 2348 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:44:06,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 235 transitions, 2872 flow [2024-06-27 20:44:06,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 235 transitions, 2519 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:44:06,392 INFO L231 Difference]: Finished difference. Result has 249 places, 197 transitions, 2064 flow [2024-06-27 20:44:06,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2064, PETRI_PLACES=249, PETRI_TRANSITIONS=197} [2024-06-27 20:44:06,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 20:44:06,392 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 197 transitions, 2064 flow [2024-06-27 20:44:06,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:06,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:06,393 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 20:44:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 20:44:06,393 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 20:44:06,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1672246903, now seen corresponding path program 24 times [2024-06-27 20:44:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:06,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48573728] [2024-06-27 20:44:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48573728] [2024-06-27 20:44:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48573728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:07,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:07,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795159760] [2024-06-27 20:44:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:07,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:07,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 197 transitions, 2064 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 20:44:07,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:07,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:07,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:07,560 INFO L124 PetriNetUnfolderBase]: 539/1023 cut-off events. [2024-06-27 20:44:07,560 INFO L125 PetriNetUnfolderBase]: For 136038/136038 co-relation queries the response was YES. [2024-06-27 20:44:07,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6707 conditions, 1023 events. 539/1023 cut-off events. For 136038/136038 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5390 event pairs, 70 based on Foata normal form. 10/1031 useless extension candidates. Maximal degree in co-relation 6609. Up to 631 conditions per place. [2024-06-27 20:44:07,568 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 73 changer transitions 14/218 dead transitions. [2024-06-27 20:44:07,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 218 transitions, 2548 flow [2024-06-27 20:44:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:44:07,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:44:07,569 INFO L175 Difference]: Start difference. First operand has 249 places, 197 transitions, 2064 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:44:07,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 218 transitions, 2548 flow [2024-06-27 20:44:07,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 218 transitions, 2242 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:07,754 INFO L231 Difference]: Finished difference. Result has 238 places, 191 transitions, 1860 flow [2024-06-27 20:44:07,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=238, PETRI_TRANSITIONS=191} [2024-06-27 20:44:07,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-27 20:44:07,755 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 191 transitions, 1860 flow [2024-06-27 20:44:07,755 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 20:44:07,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:07,755 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 20:44:07,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 20:44:07,755 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 20:44:07,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1526750541, now seen corresponding path program 25 times [2024-06-27 20:44:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:07,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938929216] [2024-06-27 20:44:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:08,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938929216] [2024-06-27 20:44:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938929216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:08,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:08,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645649774] [2024-06-27 20:44:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:08,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:08,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 191 transitions, 1860 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 20:44:08,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:08,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:08,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:09,245 INFO L124 PetriNetUnfolderBase]: 523/999 cut-off events. [2024-06-27 20:44:09,246 INFO L125 PetriNetUnfolderBase]: For 129288/129288 co-relation queries the response was YES. [2024-06-27 20:44:09,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6382 conditions, 999 events. 523/999 cut-off events. For 129288/129288 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5275 event pairs, 76 based on Foata normal form. 10/1007 useless extension candidates. Maximal degree in co-relation 6286. Up to 625 conditions per place. [2024-06-27 20:44:09,254 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 67 changer transitions 14/212 dead transitions. [2024-06-27 20:44:09,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 212 transitions, 2332 flow [2024-06-27 20:44:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:44:09,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:44:09,255 INFO L175 Difference]: Start difference. First operand has 238 places, 191 transitions, 1860 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:44:09,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 212 transitions, 2332 flow [2024-06-27 20:44:09,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 212 transitions, 2182 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:09,459 INFO L231 Difference]: Finished difference. Result has 236 places, 185 transitions, 1796 flow [2024-06-27 20:44:09,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1796, PETRI_PLACES=236, PETRI_TRANSITIONS=185} [2024-06-27 20:44:09,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-27 20:44:09,465 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 185 transitions, 1796 flow [2024-06-27 20:44:09,465 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 20:44:09,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:09,466 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 20:44:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 20:44:09,466 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 20:44:09,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1672241323, now seen corresponding path program 26 times [2024-06-27 20:44:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:09,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219587358] [2024-06-27 20:44:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219587358] [2024-06-27 20:44:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219587358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:10,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:10,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511646218] [2024-06-27 20:44:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:10,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:10,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:10,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 185 transitions, 1796 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 20:44:10,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:10,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:10,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:11,131 INFO L124 PetriNetUnfolderBase]: 499/963 cut-off events. [2024-06-27 20:44:11,131 INFO L125 PetriNetUnfolderBase]: For 119561/119561 co-relation queries the response was YES. [2024-06-27 20:44:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 963 events. 499/963 cut-off events. For 119561/119561 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5097 event pairs, 82 based on Foata normal form. 8/969 useless extension candidates. Maximal degree in co-relation 6078. Up to 465 conditions per place. [2024-06-27 20:44:11,138 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 89 changer transitions 13/205 dead transitions. [2024-06-27 20:44:11,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 205 transitions, 2248 flow [2024-06-27 20:44:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:44:11,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:44:11,139 INFO L175 Difference]: Start difference. First operand has 236 places, 185 transitions, 1796 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:44:11,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 205 transitions, 2248 flow [2024-06-27 20:44:11,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 205 transitions, 2110 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:11,331 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1783 flow [2024-06-27 20:44:11,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1783, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2024-06-27 20:44:11,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-27 20:44:11,332 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1783 flow [2024-06-27 20:44:11,332 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 20:44:11,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:11,332 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 20:44:11,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 20:44:11,332 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 20:44:11,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1478517239, now seen corresponding path program 4 times [2024-06-27 20:44:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658901561] [2024-06-27 20:44:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658901561] [2024-06-27 20:44:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658901561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:12,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:12,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:12,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871688188] [2024-06-27 20:44:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:12,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:12,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:12,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:12,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:12,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1783 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 20:44:12,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:12,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:12,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:12,779 INFO L124 PetriNetUnfolderBase]: 470/904 cut-off events. [2024-06-27 20:44:12,779 INFO L125 PetriNetUnfolderBase]: For 91122/91122 co-relation queries the response was YES. [2024-06-27 20:44:12,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 904 events. 470/904 cut-off events. For 91122/91122 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4690 event pairs, 87 based on Foata normal form. 2/904 useless extension candidates. Maximal degree in co-relation 5758. Up to 468 conditions per place. [2024-06-27 20:44:12,786 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 88 changer transitions 0/194 dead transitions. [2024-06-27 20:44:12,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 194 transitions, 2199 flow [2024-06-27 20:44:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:44:12,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:44:12,787 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1783 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:44:12,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 194 transitions, 2199 flow [2024-06-27 20:44:12,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 194 transitions, 2009 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:12,927 INFO L231 Difference]: Finished difference. Result has 229 places, 179 transitions, 1774 flow [2024-06-27 20:44:12,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1774, PETRI_PLACES=229, PETRI_TRANSITIONS=179} [2024-06-27 20:44:12,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-27 20:44:12,928 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 179 transitions, 1774 flow [2024-06-27 20:44:12,928 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 20:44:12,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:12,928 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 20:44:12,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 20:44:12,928 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 20:44:12,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:12,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1472795383, now seen corresponding path program 27 times [2024-06-27 20:44:12,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:12,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245611367] [2024-06-27 20:44:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:13,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245611367] [2024-06-27 20:44:13,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245611367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143397872] [2024-06-27 20:44:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:13,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:13,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:13,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:13,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:13,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 179 transitions, 1774 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:13,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:13,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:13,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:14,292 INFO L124 PetriNetUnfolderBase]: 482/932 cut-off events. [2024-06-27 20:44:14,292 INFO L125 PetriNetUnfolderBase]: For 104844/104844 co-relation queries the response was YES. [2024-06-27 20:44:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 932 events. 482/932 cut-off events. For 104844/104844 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4857 event pairs, 61 based on Foata normal form. 8/938 useless extension candidates. Maximal degree in co-relation 5754. Up to 243 conditions per place. [2024-06-27 20:44:14,299 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 97 changer transitions 17/204 dead transitions. [2024-06-27 20:44:14,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 204 transitions, 2404 flow [2024-06-27 20:44:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:44:14,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 20:44:14,300 INFO L175 Difference]: Start difference. First operand has 229 places, 179 transitions, 1774 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:44:14,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 204 transitions, 2404 flow [2024-06-27 20:44:14,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 204 transitions, 2202 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:14,467 INFO L231 Difference]: Finished difference. Result has 229 places, 169 transitions, 1680 flow [2024-06-27 20:44:14,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1680, PETRI_PLACES=229, PETRI_TRANSITIONS=169} [2024-06-27 20:44:14,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-27 20:44:14,467 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 169 transitions, 1680 flow [2024-06-27 20:44:14,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:14,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:14,468 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 20:44:14,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 20:44:14,468 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 20:44:14,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1478509303, now seen corresponding path program 28 times [2024-06-27 20:44:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:14,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426485821] [2024-06-27 20:44:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:14,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:15,262 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 20:44:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426485821] [2024-06-27 20:44:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426485821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:15,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:15,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411986144] [2024-06-27 20:44:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:15,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:15,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:15,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:15,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 169 transitions, 1680 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 20:44:15,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:15,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:15,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:15,733 INFO L124 PetriNetUnfolderBase]: 457/885 cut-off events. [2024-06-27 20:44:15,733 INFO L125 PetriNetUnfolderBase]: For 113801/113801 co-relation queries the response was YES. [2024-06-27 20:44:15,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5692 conditions, 885 events. 457/885 cut-off events. For 113801/113801 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4547 event pairs, 78 based on Foata normal form. 10/893 useless extension candidates. Maximal degree in co-relation 5600. Up to 410 conditions per place. [2024-06-27 20:44:15,740 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 77 changer transitions 12/190 dead transitions. [2024-06-27 20:44:15,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 190 transitions, 2108 flow [2024-06-27 20:44:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:44:15,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:44:15,741 INFO L175 Difference]: Start difference. First operand has 229 places, 169 transitions, 1680 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:44:15,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 190 transitions, 2108 flow [2024-06-27 20:44:15,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 190 transitions, 1935 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:15,898 INFO L231 Difference]: Finished difference. Result has 222 places, 163 transitions, 1612 flow [2024-06-27 20:44:15,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1612, PETRI_PLACES=222, PETRI_TRANSITIONS=163} [2024-06-27 20:44:15,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-27 20:44:15,898 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 163 transitions, 1612 flow [2024-06-27 20:44:15,899 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 20:44:15,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:15,899 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 20:44:15,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 20:44:15,899 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 20:44:15,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1332609321, now seen corresponding path program 29 times [2024-06-27 20:44:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313032283] [2024-06-27 20:44:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:16,778 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 20:44:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313032283] [2024-06-27 20:44:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313032283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:16,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:16,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537107984] [2024-06-27 20:44:16,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:16,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:16,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:16,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 163 transitions, 1612 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 20:44:16,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:16,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:16,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:17,192 INFO L124 PetriNetUnfolderBase]: 437/857 cut-off events. [2024-06-27 20:44:17,193 INFO L125 PetriNetUnfolderBase]: For 102539/102539 co-relation queries the response was YES. [2024-06-27 20:44:17,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5466 conditions, 857 events. 437/857 cut-off events. For 102539/102539 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4396 event pairs, 71 based on Foata normal form. 10/865 useless extension candidates. Maximal degree in co-relation 5378. Up to 481 conditions per place. [2024-06-27 20:44:17,199 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 58 changer transitions 14/184 dead transitions. [2024-06-27 20:44:17,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 184 transitions, 2028 flow [2024-06-27 20:44:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:44:17,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:44:17,200 INFO L175 Difference]: Start difference. First operand has 222 places, 163 transitions, 1612 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:44:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 184 transitions, 2028 flow [2024-06-27 20:44:17,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 184 transitions, 1867 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:17,332 INFO L231 Difference]: Finished difference. Result has 220 places, 157 transitions, 1519 flow [2024-06-27 20:44:17,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1519, PETRI_PLACES=220, PETRI_TRANSITIONS=157} [2024-06-27 20:44:17,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-27 20:44:17,333 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 157 transitions, 1519 flow [2024-06-27 20:44:17,334 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 20:44:17,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:17,334 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 20:44:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 20:44:17,334 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 20:44:17,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1332603741, now seen corresponding path program 30 times [2024-06-27 20:44:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:17,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546481456] [2024-06-27 20:44:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546481456] [2024-06-27 20:44:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546481456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:18,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:18,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361420128] [2024-06-27 20:44:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:18,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:18,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:18,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 157 transitions, 1519 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 20:44:18,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:18,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:18,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:18,743 INFO L124 PetriNetUnfolderBase]: 417/825 cut-off events. [2024-06-27 20:44:18,743 INFO L125 PetriNetUnfolderBase]: For 94378/94378 co-relation queries the response was YES. [2024-06-27 20:44:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 825 events. 417/825 cut-off events. For 94378/94378 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4214 event pairs, 67 based on Foata normal form. 8/831 useless extension candidates. Maximal degree in co-relation 5156. Up to 453 conditions per place. [2024-06-27 20:44:18,749 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 55 changer transitions 13/178 dead transitions. [2024-06-27 20:44:18,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 178 transitions, 1919 flow [2024-06-27 20:44:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:44:18,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:44:18,750 INFO L175 Difference]: Start difference. First operand has 220 places, 157 transitions, 1519 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:44:18,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 178 transitions, 1919 flow [2024-06-27 20:44:18,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 178 transitions, 1797 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:18,891 INFO L231 Difference]: Finished difference. Result has 217 places, 151 transitions, 1454 flow [2024-06-27 20:44:18,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1454, PETRI_PLACES=217, PETRI_TRANSITIONS=151} [2024-06-27 20:44:18,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-27 20:44:18,891 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 151 transitions, 1454 flow [2024-06-27 20:44:18,891 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 20:44:18,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:18,892 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 20:44:18,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 20:44:18,892 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 20:44:18,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 187495401, now seen corresponding path program 31 times [2024-06-27 20:44:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:18,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650692975] [2024-06-27 20:44:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:19,891 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 20:44:19,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650692975] [2024-06-27 20:44:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650692975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:19,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:19,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964552597] [2024-06-27 20:44:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:20,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:20,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 151 transitions, 1454 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 20:44:20,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:20,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:20,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:20,466 INFO L124 PetriNetUnfolderBase]: 407/807 cut-off events. [2024-06-27 20:44:20,466 INFO L125 PetriNetUnfolderBase]: For 97220/97220 co-relation queries the response was YES. [2024-06-27 20:44:20,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5128 conditions, 807 events. 407/807 cut-off events. For 97220/97220 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4093 event pairs, 95 based on Foata normal form. 10/815 useless extension candidates. Maximal degree in co-relation 5042. Up to 682 conditions per place. [2024-06-27 20:44:20,472 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 27 changer transitions 11/172 dead transitions. [2024-06-27 20:44:20,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 172 transitions, 1846 flow [2024-06-27 20:44:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:44:20,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:44:20,473 INFO L175 Difference]: Start difference. First operand has 217 places, 151 transitions, 1454 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:44:20,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 172 transitions, 1846 flow [2024-06-27 20:44:20,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 172 transitions, 1665 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-27 20:44:20,607 INFO L231 Difference]: Finished difference. Result has 207 places, 148 transitions, 1308 flow [2024-06-27 20:44:20,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1308, PETRI_PLACES=207, PETRI_TRANSITIONS=148} [2024-06-27 20:44:20,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 20:44:20,607 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 148 transitions, 1308 flow [2024-06-27 20:44:20,607 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 20:44:20,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:20,608 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 20:44:20,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 20:44:20,608 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 20:44:20,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 187697211, now seen corresponding path program 32 times [2024-06-27 20:44:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968263079] [2024-06-27 20:44:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:21,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968263079] [2024-06-27 20:44:21,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968263079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:21,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:21,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:21,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509934441] [2024-06-27 20:44:21,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:21,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:21,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:21,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 148 transitions, 1308 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 20:44:21,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:21,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:21,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:22,085 INFO L124 PetriNetUnfolderBase]: 411/823 cut-off events. [2024-06-27 20:44:22,085 INFO L125 PetriNetUnfolderBase]: For 111274/111274 co-relation queries the response was YES. [2024-06-27 20:44:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 823 events. 411/823 cut-off events. For 111274/111274 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4216 event pairs, 103 based on Foata normal form. 18/839 useless extension candidates. Maximal degree in co-relation 4893. Up to 677 conditions per place. [2024-06-27 20:44:22,091 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 22 changer transitions 16/169 dead transitions. [2024-06-27 20:44:22,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 169 transitions, 1706 flow [2024-06-27 20:44:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:44:22,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:44:22,092 INFO L175 Difference]: Start difference. First operand has 207 places, 148 transitions, 1308 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:44:22,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 169 transitions, 1706 flow [2024-06-27 20:44:22,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 169 transitions, 1648 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:22,233 INFO L231 Difference]: Finished difference. Result has 205 places, 143 transitions, 1258 flow [2024-06-27 20:44:22,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1258, PETRI_PLACES=205, PETRI_TRANSITIONS=143} [2024-06-27 20:44:22,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 20:44:22,234 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 143 transitions, 1258 flow [2024-06-27 20:44:22,234 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 20:44:22,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:22,234 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 20:44:22,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 20:44:22,234 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 20:44:22,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash 309259917, now seen corresponding path program 33 times [2024-06-27 20:44:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215913349] [2024-06-27 20:44:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215913349] [2024-06-27 20:44:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215913349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:23,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159114519] [2024-06-27 20:44:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:23,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:23,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 143 transitions, 1258 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 20:44:23,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:23,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:23,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:23,951 INFO L124 PetriNetUnfolderBase]: 389/781 cut-off events. [2024-06-27 20:44:23,951 INFO L125 PetriNetUnfolderBase]: For 94046/94046 co-relation queries the response was YES. [2024-06-27 20:44:23,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4790 conditions, 781 events. 389/781 cut-off events. For 94046/94046 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3947 event pairs, 91 based on Foata normal form. 12/791 useless extension candidates. Maximal degree in co-relation 4707. Up to 648 conditions per place. [2024-06-27 20:44:23,957 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 29 changer transitions 9/166 dead transitions. [2024-06-27 20:44:23,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 166 transitions, 1654 flow [2024-06-27 20:44:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:44:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:44:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 20:44:23,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:44:23,958 INFO L175 Difference]: Start difference. First operand has 205 places, 143 transitions, 1258 flow. Second operand 12 states and 128 transitions. [2024-06-27 20:44:23,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 166 transitions, 1654 flow [2024-06-27 20:44:24,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 166 transitions, 1604 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:24,088 INFO L231 Difference]: Finished difference. Result has 202 places, 141 transitions, 1265 flow [2024-06-27 20:44:24,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1265, PETRI_PLACES=202, PETRI_TRANSITIONS=141} [2024-06-27 20:44:24,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:44:24,089 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 141 transitions, 1265 flow [2024-06-27 20:44:24,089 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 20:44:24,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:24,089 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 20:44:24,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 20:44:24,089 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 20:44:24,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1660198583, now seen corresponding path program 5 times [2024-06-27 20:44:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:24,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611361392] [2024-06-27 20:44:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611361392] [2024-06-27 20:44:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611361392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:24,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618722602] [2024-06-27 20:44:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:24,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:24,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:24,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:25,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 141 transitions, 1265 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 20:44:25,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:25,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:25,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:25,297 INFO L124 PetriNetUnfolderBase]: 369/741 cut-off events. [2024-06-27 20:44:25,298 INFO L125 PetriNetUnfolderBase]: For 65828/65828 co-relation queries the response was YES. [2024-06-27 20:44:25,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 741 events. 369/741 cut-off events. For 65828/65828 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3707 event pairs, 90 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 4589. Up to 694 conditions per place. [2024-06-27 20:44:25,303 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 17 changer transitions 0/155 dead transitions. [2024-06-27 20:44:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 155 transitions, 1615 flow [2024-06-27 20:44:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:44:25,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-27 20:44:25,304 INFO L175 Difference]: Start difference. First operand has 202 places, 141 transitions, 1265 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:44:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 155 transitions, 1615 flow [2024-06-27 20:44:25,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 155 transitions, 1545 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:25,416 INFO L231 Difference]: Finished difference. Result has 200 places, 142 transitions, 1251 flow [2024-06-27 20:44:25,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1251, PETRI_PLACES=200, PETRI_TRANSITIONS=142} [2024-06-27 20:44:25,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 20:44:25,417 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 142 transitions, 1251 flow [2024-06-27 20:44:25,417 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 20:44:25,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:25,417 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 20:44:25,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 20:44:25,417 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 20:44:25,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:25,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1660189283, now seen corresponding path program 6 times [2024-06-27 20:44:25,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:25,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995408702] [2024-06-27 20:44:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:26,331 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 20:44:26,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:26,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995408702] [2024-06-27 20:44:26,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995408702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:26,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:26,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:26,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919986057] [2024-06-27 20:44:26,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:26,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:26,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:26,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:26,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 142 transitions, 1251 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 20:44:26,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:26,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:26,747 INFO L124 PetriNetUnfolderBase]: 373/749 cut-off events. [2024-06-27 20:44:26,747 INFO L125 PetriNetUnfolderBase]: For 65822/65822 co-relation queries the response was YES. [2024-06-27 20:44:26,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 749 events. 373/749 cut-off events. For 65822/65822 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3759 event pairs, 90 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 4601. Up to 688 conditions per place. [2024-06-27 20:44:26,752 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-06-27 20:44:26,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 156 transitions, 1605 flow [2024-06-27 20:44:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:44:26,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:44:26,753 INFO L175 Difference]: Start difference. First operand has 200 places, 142 transitions, 1251 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:44:26,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 156 transitions, 1605 flow [2024-06-27 20:44:26,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 156 transitions, 1559 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:26,870 INFO L231 Difference]: Finished difference. Result has 202 places, 143 transitions, 1265 flow [2024-06-27 20:44:26,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1265, PETRI_PLACES=202, PETRI_TRANSITIONS=143} [2024-06-27 20:44:26,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:44:26,870 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 143 transitions, 1265 flow [2024-06-27 20:44:26,870 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 20:44:26,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:26,870 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 20:44:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 20:44:26,871 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 20:44:26,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1974165219, now seen corresponding path program 34 times [2024-06-27 20:44:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:26,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36464343] [2024-06-27 20:44:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:27,866 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 20:44:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36464343] [2024-06-27 20:44:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36464343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362578221] [2024-06-27 20:44:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:27,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:27,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:27,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 143 transitions, 1265 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 20:44:27,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:27,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:27,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:28,292 INFO L124 PetriNetUnfolderBase]: 389/785 cut-off events. [2024-06-27 20:44:28,292 INFO L125 PetriNetUnfolderBase]: For 86843/86843 co-relation queries the response was YES. [2024-06-27 20:44:28,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4791 conditions, 785 events. 389/785 cut-off events. For 86843/86843 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4001 event pairs, 102 based on Foata normal form. 10/793 useless extension candidates. Maximal degree in co-relation 4709. Up to 694 conditions per place. [2024-06-27 20:44:28,298 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 15 changer transitions 11/162 dead transitions. [2024-06-27 20:44:28,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 162 transitions, 1633 flow [2024-06-27 20:44:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:28,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:44:28,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 20:44:28,299 INFO L175 Difference]: Start difference. First operand has 202 places, 143 transitions, 1265 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:44:28,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 162 transitions, 1633 flow [2024-06-27 20:44:28,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 162 transitions, 1583 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:28,422 INFO L231 Difference]: Finished difference. Result has 205 places, 140 transitions, 1223 flow [2024-06-27 20:44:28,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1223, PETRI_PLACES=205, PETRI_TRANSITIONS=140} [2024-06-27 20:44:28,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 20:44:28,423 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 140 transitions, 1223 flow [2024-06-27 20:44:28,423 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 20:44:28,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:28,423 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 20:44:28,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 20:44:28,423 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 20:44:28,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1143444979, now seen corresponding path program 7 times [2024-06-27 20:44:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:28,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765742946] [2024-06-27 20:44:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:28,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:29,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:29,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765742946] [2024-06-27 20:44:29,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765742946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:29,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:29,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:29,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302005716] [2024-06-27 20:44:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:29,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:29,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:29,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:29,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:29,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 140 transitions, 1223 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 20:44:29,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:29,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:29,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:29,775 INFO L124 PetriNetUnfolderBase]: 367/743 cut-off events. [2024-06-27 20:44:29,776 INFO L125 PetriNetUnfolderBase]: For 69666/69666 co-relation queries the response was YES. [2024-06-27 20:44:29,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 743 events. 367/743 cut-off events. For 69666/69666 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3753 event pairs, 96 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 4589. Up to 696 conditions per place. [2024-06-27 20:44:29,781 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 137 selfloop transitions, 17 changer transitions 0/156 dead transitions. [2024-06-27 20:44:29,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 156 transitions, 1590 flow [2024-06-27 20:44:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-27 20:44:29,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-27 20:44:29,782 INFO L175 Difference]: Start difference. First operand has 205 places, 140 transitions, 1223 flow. Second operand 11 states and 103 transitions. [2024-06-27 20:44:29,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 156 transitions, 1590 flow [2024-06-27 20:44:29,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 156 transitions, 1554 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:29,903 INFO L231 Difference]: Finished difference. Result has 204 places, 143 transitions, 1263 flow [2024-06-27 20:44:29,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1263, PETRI_PLACES=204, PETRI_TRANSITIONS=143} [2024-06-27 20:44:29,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-27 20:44:29,904 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 143 transitions, 1263 flow [2024-06-27 20:44:29,904 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 20:44:29,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:29,904 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 20:44:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 20:44:29,904 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 20:44:29,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash 115314927, now seen corresponding path program 35 times [2024-06-27 20:44:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833276452] [2024-06-27 20:44:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:29,905 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 20:44:31,039 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 20:44:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833276452] [2024-06-27 20:44:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833276452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189537705] [2024-06-27 20:44:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:31,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:31,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:31,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:31,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 143 transitions, 1263 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 20:44:31,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:31,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:31,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:31,558 INFO L124 PetriNetUnfolderBase]: 379/771 cut-off events. [2024-06-27 20:44:31,558 INFO L125 PetriNetUnfolderBase]: For 82180/82180 co-relation queries the response was YES. [2024-06-27 20:44:31,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 771 events. 379/771 cut-off events. For 82180/82180 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3945 event pairs, 97 based on Foata normal form. 8/777 useless extension candidates. Maximal degree in co-relation 4715. Up to 670 conditions per place. [2024-06-27 20:44:31,564 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 124 selfloop transitions, 20 changer transitions 14/160 dead transitions. [2024-06-27 20:44:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 160 transitions, 1625 flow [2024-06-27 20:44:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 20:44:31,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 20:44:31,565 INFO L175 Difference]: Start difference. First operand has 204 places, 143 transitions, 1263 flow. Second operand 11 states and 113 transitions. [2024-06-27 20:44:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 160 transitions, 1625 flow [2024-06-27 20:44:31,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 160 transitions, 1577 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:31,700 INFO L231 Difference]: Finished difference. Result has 207 places, 138 transitions, 1219 flow [2024-06-27 20:44:31,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1219, PETRI_PLACES=207, PETRI_TRANSITIONS=138} [2024-06-27 20:44:31,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 20:44:31,700 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 138 transitions, 1219 flow [2024-06-27 20:44:31,701 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 20:44:31,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:31,701 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 20:44:31,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 20:44:31,701 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 20:44:31,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2072908105, now seen corresponding path program 8 times [2024-06-27 20:44:31,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:31,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766587926] [2024-06-27 20:44:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:31,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:32,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:32,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766587926] [2024-06-27 20:44:32,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766587926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:32,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:32,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621978760] [2024-06-27 20:44:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:32,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:32,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:32,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:32,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 138 transitions, 1219 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 20:44:32,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:32,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:32,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:33,125 INFO L124 PetriNetUnfolderBase]: 362/732 cut-off events. [2024-06-27 20:44:33,126 INFO L125 PetriNetUnfolderBase]: For 69932/69932 co-relation queries the response was YES. [2024-06-27 20:44:33,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4717 conditions, 732 events. 362/732 cut-off events. For 69932/69932 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3682 event pairs, 96 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 4633. Up to 659 conditions per place. [2024-06-27 20:44:33,131 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 24 changer transitions 0/152 dead transitions. [2024-06-27 20:44:33,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 152 transitions, 1575 flow [2024-06-27 20:44:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 20:44:33,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-27 20:44:33,132 INFO L175 Difference]: Start difference. First operand has 207 places, 138 transitions, 1219 flow. Second operand 10 states and 104 transitions. [2024-06-27 20:44:33,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 152 transitions, 1575 flow [2024-06-27 20:44:33,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 152 transitions, 1525 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:33,247 INFO L231 Difference]: Finished difference. Result has 198 places, 139 transitions, 1245 flow [2024-06-27 20:44:33,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1245, PETRI_PLACES=198, PETRI_TRANSITIONS=139} [2024-06-27 20:44:33,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 20:44:33,248 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 139 transitions, 1245 flow [2024-06-27 20:44:33,248 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 20:44:33,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:33,248 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 20:44:33,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 20:44:33,248 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 20:44:33,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash 309254337, now seen corresponding path program 36 times [2024-06-27 20:44:33,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:33,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547115089] [2024-06-27 20:44:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:34,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547115089] [2024-06-27 20:44:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547115089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:34,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:34,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625656561] [2024-06-27 20:44:34,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:34,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:34,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:34,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:34,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:34,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 139 transitions, 1245 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 20:44:34,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:34,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:34,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:34,891 INFO L124 PetriNetUnfolderBase]: 407/827 cut-off events. [2024-06-27 20:44:34,891 INFO L125 PetriNetUnfolderBase]: For 97322/97322 co-relation queries the response was YES. [2024-06-27 20:44:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5555 conditions, 827 events. 407/827 cut-off events. For 97322/97322 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4287 event pairs, 106 based on Foata normal form. 8/833 useless extension candidates. Maximal degree in co-relation 5475. Up to 605 conditions per place. [2024-06-27 20:44:34,897 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 32 changer transitions 8/166 dead transitions. [2024-06-27 20:44:34,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 166 transitions, 1810 flow [2024-06-27 20:44:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:44:34,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:44:34,898 INFO L175 Difference]: Start difference. First operand has 198 places, 139 transitions, 1245 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:44:34,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 166 transitions, 1810 flow [2024-06-27 20:44:35,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 166 transitions, 1740 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:35,051 INFO L231 Difference]: Finished difference. Result has 202 places, 138 transitions, 1258 flow [2024-06-27 20:44:35,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1258, PETRI_PLACES=202, PETRI_TRANSITIONS=138} [2024-06-27 20:44:35,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:44:35,052 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 138 transitions, 1258 flow [2024-06-27 20:44:35,052 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 20:44:35,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:35,052 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 20:44:35,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 20:44:35,052 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 20:44:35,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash 381636621, now seen corresponding path program 37 times [2024-06-27 20:44:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428431807] [2024-06-27 20:44:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:35,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:36,097 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 20:44:36,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:36,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428431807] [2024-06-27 20:44:36,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428431807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:36,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951881421] [2024-06-27 20:44:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:36,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:36,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 138 transitions, 1258 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 20:44:36,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:36,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:36,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:36,639 INFO L124 PetriNetUnfolderBase]: 404/822 cut-off events. [2024-06-27 20:44:36,639 INFO L125 PetriNetUnfolderBase]: For 104600/104600 co-relation queries the response was YES. [2024-06-27 20:44:36,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 822 events. 404/822 cut-off events. For 104600/104600 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4272 event pairs, 122 based on Foata normal form. 10/830 useless extension candidates. Maximal degree in co-relation 5493. Up to 718 conditions per place. [2024-06-27 20:44:36,645 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 124 selfloop transitions, 20 changer transitions 11/157 dead transitions. [2024-06-27 20:44:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 157 transitions, 1626 flow [2024-06-27 20:44:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 20:44:36,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 20:44:36,646 INFO L175 Difference]: Start difference. First operand has 202 places, 138 transitions, 1258 flow. Second operand 11 states and 115 transitions. [2024-06-27 20:44:36,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 157 transitions, 1626 flow [2024-06-27 20:44:36,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 157 transitions, 1572 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:36,787 INFO L231 Difference]: Finished difference. Result has 200 places, 135 transitions, 1220 flow [2024-06-27 20:44:36,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1220, PETRI_PLACES=200, PETRI_TRANSITIONS=135} [2024-06-27 20:44:36,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 20:44:36,788 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 135 transitions, 1220 flow [2024-06-27 20:44:36,788 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 20:44:36,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:36,788 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 20:44:36,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 20:44:36,789 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 20:44:36,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2072917405, now seen corresponding path program 9 times [2024-06-27 20:44:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:36,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292443797] [2024-06-27 20:44:36,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:36,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292443797] [2024-06-27 20:44:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292443797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202081311] [2024-06-27 20:44:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:37,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:37,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:37,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 135 transitions, 1220 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 20:44:37,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:37,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:37,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:38,170 INFO L124 PetriNetUnfolderBase]: 389/793 cut-off events. [2024-06-27 20:44:38,170 INFO L125 PetriNetUnfolderBase]: For 86198/86198 co-relation queries the response was YES. [2024-06-27 20:44:38,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 793 events. 389/793 cut-off events. For 86198/86198 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4101 event pairs, 116 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 5517. Up to 693 conditions per place. [2024-06-27 20:44:38,176 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 28 changer transitions 0/151 dead transitions. [2024-06-27 20:44:38,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 151 transitions, 1730 flow [2024-06-27 20:44:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:44:38,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:44:38,177 INFO L175 Difference]: Start difference. First operand has 200 places, 135 transitions, 1220 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:44:38,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 151 transitions, 1730 flow [2024-06-27 20:44:38,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 151 transitions, 1682 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:38,324 INFO L231 Difference]: Finished difference. Result has 197 places, 137 transitions, 1286 flow [2024-06-27 20:44:38,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1286, PETRI_PLACES=197, PETRI_TRANSITIONS=137} [2024-06-27 20:44:38,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 20:44:38,324 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 137 transitions, 1286 flow [2024-06-27 20:44:38,324 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 20:44:38,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:38,325 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 20:44:38,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 20:44:38,325 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 20:44:38,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash 389053867, now seen corresponding path program 10 times [2024-06-27 20:44:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:38,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287488733] [2024-06-27 20:44:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:39,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:39,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287488733] [2024-06-27 20:44:39,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287488733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:39,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:39,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:44:39,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459201532] [2024-06-27 20:44:39,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:39,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:44:39,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:39,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:44:39,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:44:39,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:39,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 137 transitions, 1286 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:39,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:39,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:39,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:39,560 INFO L124 PetriNetUnfolderBase]: 386/788 cut-off events. [2024-06-27 20:44:39,560 INFO L125 PetriNetUnfolderBase]: For 79762/79762 co-relation queries the response was YES. [2024-06-27 20:44:39,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 788 events. 386/788 cut-off events. For 79762/79762 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4062 event pairs, 120 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 5359. Up to 728 conditions per place. [2024-06-27 20:44:39,565 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-27 20:44:39,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 150 transitions, 1638 flow [2024-06-27 20:44:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:44:39,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:44:39,567 INFO L175 Difference]: Start difference. First operand has 197 places, 137 transitions, 1286 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:44:39,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 150 transitions, 1638 flow [2024-06-27 20:44:39,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 150 transitions, 1582 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 20:44:39,686 INFO L231 Difference]: Finished difference. Result has 201 places, 138 transitions, 1304 flow [2024-06-27 20:44:39,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=201, PETRI_TRANSITIONS=138} [2024-06-27 20:44:39,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 20:44:39,687 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 138 transitions, 1304 flow [2024-06-27 20:44:39,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:44:39,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:39,687 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 20:44:39,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 20:44:39,688 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 20:44:39,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2072640699, now seen corresponding path program 38 times [2024-06-27 20:44:39,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:39,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766123574] [2024-06-27 20:44:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:39,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766123574] [2024-06-27 20:44:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766123574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:40,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162600199] [2024-06-27 20:44:40,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:40,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:40,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 138 transitions, 1304 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 20:44:40,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:40,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:40,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:41,357 INFO L124 PetriNetUnfolderBase]: 402/824 cut-off events. [2024-06-27 20:44:41,357 INFO L125 PetriNetUnfolderBase]: For 98916/98916 co-relation queries the response was YES. [2024-06-27 20:44:41,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5559 conditions, 824 events. 402/824 cut-off events. For 98916/98916 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4310 event pairs, 119 based on Foata normal form. 10/832 useless extension candidates. Maximal degree in co-relation 5478. Up to 697 conditions per place. [2024-06-27 20:44:41,364 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 25 changer transitions 9/157 dead transitions. [2024-06-27 20:44:41,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 157 transitions, 1672 flow [2024-06-27 20:44:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:44:41,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:44:41,365 INFO L175 Difference]: Start difference. First operand has 201 places, 138 transitions, 1304 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:44:41,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 157 transitions, 1672 flow [2024-06-27 20:44:41,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 157 transitions, 1608 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:44:41,518 INFO L231 Difference]: Finished difference. Result has 204 places, 135 transitions, 1267 flow [2024-06-27 20:44:41,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1267, PETRI_PLACES=204, PETRI_TRANSITIONS=135} [2024-06-27 20:44:41,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-27 20:44:41,518 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 135 transitions, 1267 flow [2024-06-27 20:44:41,519 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 20:44:41,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:41,519 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 20:44:41,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 20:44:41,519 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 20:44:41,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:41,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2065498795, now seen corresponding path program 11 times [2024-06-27 20:44:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:41,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077745988] [2024-06-27 20:44:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:42,486 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 20:44:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077745988] [2024-06-27 20:44:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077745988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711391195] [2024-06-27 20:44:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:42,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:42,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:42,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 135 transitions, 1267 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 20:44:42,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:42,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:42,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:42,855 INFO L124 PetriNetUnfolderBase]: 373/769 cut-off events. [2024-06-27 20:44:42,855 INFO L125 PetriNetUnfolderBase]: For 79854/79854 co-relation queries the response was YES. [2024-06-27 20:44:42,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5226 conditions, 769 events. 373/769 cut-off events. For 79854/79854 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3983 event pairs, 112 based on Foata normal form. 2/769 useless extension candidates. Maximal degree in co-relation 5144. Up to 692 conditions per place. [2024-06-27 20:44:42,860 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 20:44:42,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 148 transitions, 1593 flow [2024-06-27 20:44:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 20:44:42,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 20:44:42,861 INFO L175 Difference]: Start difference. First operand has 204 places, 135 transitions, 1267 flow. Second operand 10 states and 103 transitions. [2024-06-27 20:44:42,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 148 transitions, 1593 flow [2024-06-27 20:44:42,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 148 transitions, 1519 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:43,013 INFO L231 Difference]: Finished difference. Result has 201 places, 135 transitions, 1249 flow [2024-06-27 20:44:43,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1249, PETRI_PLACES=201, PETRI_TRANSITIONS=135} [2024-06-27 20:44:43,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-27 20:44:43,014 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 135 transitions, 1249 flow [2024-06-27 20:44:43,014 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 20:44:43,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:43,014 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 20:44:43,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 20:44:43,014 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 20:44:43,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash 316888273, now seen corresponding path program 12 times [2024-06-27 20:44:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341841130] [2024-06-27 20:44:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:44,131 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 20:44:44,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:44,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341841130] [2024-06-27 20:44:44,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341841130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:44,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:44,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222327022] [2024-06-27 20:44:44,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:44,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:44,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:44,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 135 transitions, 1249 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 20:44:44,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:44,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:44,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:44,453 INFO L124 PetriNetUnfolderBase]: 370/764 cut-off events. [2024-06-27 20:44:44,453 INFO L125 PetriNetUnfolderBase]: For 73032/73032 co-relation queries the response was YES. [2024-06-27 20:44:44,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4995 conditions, 764 events. 370/764 cut-off events. For 73032/73032 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3929 event pairs, 116 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 4914. Up to 684 conditions per place. [2024-06-27 20:44:44,459 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 23 changer transitions 0/147 dead transitions. [2024-06-27 20:44:44,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 147 transitions, 1567 flow [2024-06-27 20:44:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:44:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:44:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:44:44,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 20:44:44,460 INFO L175 Difference]: Start difference. First operand has 201 places, 135 transitions, 1249 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:44:44,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 147 transitions, 1567 flow [2024-06-27 20:44:44,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 147 transitions, 1509 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:44:44,599 INFO L231 Difference]: Finished difference. Result has 202 places, 135 transitions, 1241 flow [2024-06-27 20:44:44,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1241, PETRI_PLACES=202, PETRI_TRANSITIONS=135} [2024-06-27 20:44:44,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:44:44,600 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 135 transitions, 1241 flow [2024-06-27 20:44:44,600 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 20:44:44,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:44,600 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 20:44:44,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 20:44:44,600 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 20:44:44,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2065289049, now seen corresponding path program 39 times [2024-06-27 20:44:44,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:44,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964569183] [2024-06-27 20:44:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:45,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:45,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964569183] [2024-06-27 20:44:45,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964569183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:45,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:45,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:45,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963725712] [2024-06-27 20:44:45,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:45,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:45,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:45,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:45,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 135 transitions, 1241 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 20:44:45,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:45,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:45,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:45,929 INFO L124 PetriNetUnfolderBase]: 386/800 cut-off events. [2024-06-27 20:44:45,929 INFO L125 PetriNetUnfolderBase]: For 92792/92792 co-relation queries the response was YES. [2024-06-27 20:44:45,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5110 conditions, 800 events. 386/800 cut-off events. For 92792/92792 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4187 event pairs, 115 based on Foata normal form. 10/808 useless extension candidates. Maximal degree in co-relation 5028. Up to 670 conditions per place. [2024-06-27 20:44:45,935 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 27 changer transitions 11/154 dead transitions. [2024-06-27 20:44:45,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 154 transitions, 1603 flow [2024-06-27 20:44:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:44:45,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:44:45,937 INFO L175 Difference]: Start difference. First operand has 202 places, 135 transitions, 1241 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:44:45,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 154 transitions, 1603 flow [2024-06-27 20:44:46,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 154 transitions, 1497 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:46,108 INFO L231 Difference]: Finished difference. Result has 203 places, 132 transitions, 1170 flow [2024-06-27 20:44:46,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1170, PETRI_PLACES=203, PETRI_TRANSITIONS=132} [2024-06-27 20:44:46,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-27 20:44:46,109 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 132 transitions, 1170 flow [2024-06-27 20:44:46,109 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 20:44:46,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:46,109 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 20:44:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 20:44:46,109 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 20:44:46,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1409684015, now seen corresponding path program 40 times [2024-06-27 20:44:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886648228] [2024-06-27 20:44:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:46,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:46,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886648228] [2024-06-27 20:44:46,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886648228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:46,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:46,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256284859] [2024-06-27 20:44:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:47,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:47,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 132 transitions, 1170 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 20:44:47,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:47,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:47,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:47,463 INFO L124 PetriNetUnfolderBase]: 374/780 cut-off events. [2024-06-27 20:44:47,463 INFO L125 PetriNetUnfolderBase]: For 90730/90730 co-relation queries the response was YES. [2024-06-27 20:44:47,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4924 conditions, 780 events. 374/780 cut-off events. For 90730/90730 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4085 event pairs, 105 based on Foata normal form. 8/786 useless extension candidates. Maximal degree in co-relation 4843. Up to 595 conditions per place. [2024-06-27 20:44:47,469 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 120 selfloop transitions, 26 changer transitions 8/156 dead transitions. [2024-06-27 20:44:47,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 156 transitions, 1684 flow [2024-06-27 20:44:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:44:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:44:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 20:44:47,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 20:44:47,470 INFO L175 Difference]: Start difference. First operand has 203 places, 132 transitions, 1170 flow. Second operand 12 states and 125 transitions. [2024-06-27 20:44:47,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 156 transitions, 1684 flow [2024-06-27 20:44:47,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 156 transitions, 1622 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:44:47,622 INFO L231 Difference]: Finished difference. Result has 202 places, 129 transitions, 1143 flow [2024-06-27 20:44:47,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1143, PETRI_PLACES=202, PETRI_TRANSITIONS=129} [2024-06-27 20:44:47,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-27 20:44:47,623 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 129 transitions, 1143 flow [2024-06-27 20:44:47,623 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 20:44:47,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:47,623 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 20:44:47,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 20:44:47,623 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 20:44:47,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash 388786461, now seen corresponding path program 41 times [2024-06-27 20:44:47,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:47,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894863340] [2024-06-27 20:44:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:47,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:48,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894863340] [2024-06-27 20:44:48,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894863340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:48,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:48,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:48,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927289269] [2024-06-27 20:44:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:48,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:48,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 129 transitions, 1143 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 20:44:48,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:48,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:48,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:49,005 INFO L124 PetriNetUnfolderBase]: 350/736 cut-off events. [2024-06-27 20:44:49,005 INFO L125 PetriNetUnfolderBase]: For 83634/83634 co-relation queries the response was YES. [2024-06-27 20:44:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4105 conditions, 736 events. 350/736 cut-off events. For 83634/83634 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3811 event pairs, 107 based on Foata normal form. 16/750 useless extension candidates. Maximal degree in co-relation 4025. Up to 602 conditions per place. [2024-06-27 20:44:49,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 17 changer transitions 16/147 dead transitions. [2024-06-27 20:44:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 147 transitions, 1487 flow [2024-06-27 20:44:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 20:44:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 20:44:49,011 INFO L175 Difference]: Start difference. First operand has 202 places, 129 transitions, 1143 flow. Second operand 11 states and 113 transitions. [2024-06-27 20:44:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 147 transitions, 1487 flow [2024-06-27 20:44:49,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 147 transitions, 1431 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:44:49,120 INFO L231 Difference]: Finished difference. Result has 198 places, 123 transitions, 1077 flow [2024-06-27 20:44:49,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1077, PETRI_PLACES=198, PETRI_TRANSITIONS=123} [2024-06-27 20:44:49,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 20:44:49,120 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 123 transitions, 1077 flow [2024-06-27 20:44:49,120 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 20:44:49,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:49,121 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 20:44:49,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 20:44:49,121 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 20:44:49,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2065490859, now seen corresponding path program 42 times [2024-06-27 20:44:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706964957] [2024-06-27 20:44:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:49,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:49,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706964957] [2024-06-27 20:44:49,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706964957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:49,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:49,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:44:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158236331] [2024-06-27 20:44:49,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:44:49,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:44:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:44:50,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:50,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 123 transitions, 1077 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 20:44:50,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:50,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:50,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:50,334 INFO L124 PetriNetUnfolderBase]: 293/625 cut-off events. [2024-06-27 20:44:50,334 INFO L125 PetriNetUnfolderBase]: For 45896/45896 co-relation queries the response was YES. [2024-06-27 20:44:50,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 625 events. 293/625 cut-off events. For 45896/45896 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3141 event pairs, 73 based on Foata normal form. 10/633 useless extension candidates. Maximal degree in co-relation 2987. Up to 504 conditions per place. [2024-06-27 20:44:50,338 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 23 changer transitions 11/141 dead transitions. [2024-06-27 20:44:50,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 141 transitions, 1407 flow [2024-06-27 20:44:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:44:50,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 20:44:50,339 INFO L175 Difference]: Start difference. First operand has 198 places, 123 transitions, 1077 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:44:50,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 141 transitions, 1407 flow [2024-06-27 20:44:50,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 141 transitions, 1365 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:50,384 INFO L231 Difference]: Finished difference. Result has 191 places, 119 transitions, 1050 flow [2024-06-27 20:44:50,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1050, PETRI_PLACES=191, PETRI_TRANSITIONS=119} [2024-06-27 20:44:50,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-27 20:44:50,385 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 119 transitions, 1050 flow [2024-06-27 20:44:50,385 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 20:44:50,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:50,385 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 20:44:50,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 20:44:50,385 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 20:44:50,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 470148418, now seen corresponding path program 1 times [2024-06-27 20:44:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584033367] [2024-06-27 20:44:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584033367] [2024-06-27 20:44:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584033367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:51,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:44:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957487266] [2024-06-27 20:44:51,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:44:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:44:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:44:52,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:52,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 119 transitions, 1050 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 20:44:52,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:52,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:52,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:52,527 INFO L124 PetriNetUnfolderBase]: 275/595 cut-off events. [2024-06-27 20:44:52,528 INFO L125 PetriNetUnfolderBase]: For 34254/34254 co-relation queries the response was YES. [2024-06-27 20:44:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2922 conditions, 595 events. 275/595 cut-off events. For 34254/34254 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2990 event pairs, 61 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 2847. Up to 261 conditions per place. [2024-06-27 20:44:52,532 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 47 changer transitions 11/134 dead transitions. [2024-06-27 20:44:52,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 134 transitions, 1352 flow [2024-06-27 20:44:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 20:44:52,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:44:52,533 INFO L175 Difference]: Start difference. First operand has 191 places, 119 transitions, 1050 flow. Second operand 11 states and 110 transitions. [2024-06-27 20:44:52,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 134 transitions, 1352 flow [2024-06-27 20:44:52,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 134 transitions, 1276 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:44:52,581 INFO L231 Difference]: Finished difference. Result has 185 places, 112 transitions, 992 flow [2024-06-27 20:44:52,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=992, PETRI_PLACES=185, PETRI_TRANSITIONS=112} [2024-06-27 20:44:52,582 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-27 20:44:52,582 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 112 transitions, 992 flow [2024-06-27 20:44:52,582 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 20:44:52,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:52,582 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 20:44:52,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 20:44:52,582 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 20:44:52,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2047490148, now seen corresponding path program 2 times [2024-06-27 20:44:52,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:52,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512020304] [2024-06-27 20:44:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512020304] [2024-06-27 20:44:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512020304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:53,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:53,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:44:53,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892006896] [2024-06-27 20:44:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:53,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:44:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:44:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:44:54,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:54,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 112 transitions, 992 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 20:44:54,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:54,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:54,338 INFO L124 PetriNetUnfolderBase]: 250/534 cut-off events. [2024-06-27 20:44:54,338 INFO L125 PetriNetUnfolderBase]: For 33097/33097 co-relation queries the response was YES. [2024-06-27 20:44:54,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 534 events. 250/534 cut-off events. For 33097/33097 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2559 event pairs, 48 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 2580. Up to 257 conditions per place. [2024-06-27 20:44:54,342 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 41 changer transitions 22/128 dead transitions. [2024-06-27 20:44:54,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 128 transitions, 1284 flow [2024-06-27 20:44:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:44:54,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-27 20:44:54,343 INFO L175 Difference]: Start difference. First operand has 185 places, 112 transitions, 992 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:44:54,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 128 transitions, 1284 flow [2024-06-27 20:44:54,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 128 transitions, 1066 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-27 20:44:54,394 INFO L231 Difference]: Finished difference. Result has 177 places, 100 transitions, 778 flow [2024-06-27 20:44:54,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=778, PETRI_PLACES=177, PETRI_TRANSITIONS=100} [2024-06-27 20:44:54,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-27 20:44:54,395 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 100 transitions, 778 flow [2024-06-27 20:44:54,395 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 20:44:54,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:54,395 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 20:44:54,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 20:44:54,395 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 20:44:54,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash 946063536, now seen corresponding path program 3 times [2024-06-27 20:44:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803150526] [2024-06-27 20:44:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803150526] [2024-06-27 20:44:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803150526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:55,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:55,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:44:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119663174] [2024-06-27 20:44:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:44:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:44:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:44:56,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:56,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 100 transitions, 778 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 20:44:56,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:56,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:56,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:56,362 INFO L124 PetriNetUnfolderBase]: 230/490 cut-off events. [2024-06-27 20:44:56,362 INFO L125 PetriNetUnfolderBase]: For 32769/32769 co-relation queries the response was YES. [2024-06-27 20:44:56,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 490 events. 230/490 cut-off events. For 32769/32769 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2274 event pairs, 48 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 2283. Up to 245 conditions per place. [2024-06-27 20:44:56,365 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 35 changer transitions 19/117 dead transitions. [2024-06-27 20:44:56,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 117 transitions, 1052 flow [2024-06-27 20:44:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 20:44:56,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-27 20:44:56,366 INFO L175 Difference]: Start difference. First operand has 177 places, 100 transitions, 778 flow. Second operand 11 states and 112 transitions. [2024-06-27 20:44:56,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 117 transitions, 1052 flow [2024-06-27 20:44:56,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 117 transitions, 956 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 20:44:56,412 INFO L231 Difference]: Finished difference. Result has 164 places, 90 transitions, 687 flow [2024-06-27 20:44:56,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=687, PETRI_PLACES=164, PETRI_TRANSITIONS=90} [2024-06-27 20:44:56,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-27 20:44:56,413 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 90 transitions, 687 flow [2024-06-27 20:44:56,413 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 20:44:56,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:56,413 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 20:44:56,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 20:44:56,419 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 20:44:56,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:56,419 INFO L85 PathProgramCache]: Analyzing trace with hash 84873858, now seen corresponding path program 4 times [2024-06-27 20:44:56,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894310721] [2024-06-27 20:44:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:56,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894310721] [2024-06-27 20:44:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894310721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:57,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:57,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:44:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017455537] [2024-06-27 20:44:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:44:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:57,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:44:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:44:57,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:57,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 90 transitions, 687 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 20:44:57,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:57,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:57,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:44:57,997 INFO L124 PetriNetUnfolderBase]: 212/452 cut-off events. [2024-06-27 20:44:57,998 INFO L125 PetriNetUnfolderBase]: For 26568/26568 co-relation queries the response was YES. [2024-06-27 20:44:57,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 452 events. 212/452 cut-off events. For 26568/26568 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2016 event pairs, 48 based on Foata normal form. 6/456 useless extension candidates. Maximal degree in co-relation 2063. Up to 233 conditions per place. [2024-06-27 20:44:58,000 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 33 changer transitions 16/107 dead transitions. [2024-06-27 20:44:58,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 107 transitions, 941 flow [2024-06-27 20:44:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:44:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:44:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 20:44:58,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:44:58,001 INFO L175 Difference]: Start difference. First operand has 164 places, 90 transitions, 687 flow. Second operand 11 states and 110 transitions. [2024-06-27 20:44:58,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 107 transitions, 941 flow [2024-06-27 20:44:58,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 107 transitions, 859 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:44:58,033 INFO L231 Difference]: Finished difference. Result has 155 places, 82 transitions, 619 flow [2024-06-27 20:44:58,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=619, PETRI_PLACES=155, PETRI_TRANSITIONS=82} [2024-06-27 20:44:58,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 20:44:58,034 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 82 transitions, 619 flow [2024-06-27 20:44:58,034 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 20:44:58,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:44:58,034 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 20:44:58,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 20:44:58,035 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 20:44:58,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:44:58,035 INFO L85 PathProgramCache]: Analyzing trace with hash 536238504, now seen corresponding path program 5 times [2024-06-27 20:44:58,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:44:58,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748794573] [2024-06-27 20:44:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:44:58,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:44:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:44:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:44:59,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:44:59,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748794573] [2024-06-27 20:44:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748794573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:44:59,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:44:59,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:44:59,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933431574] [2024-06-27 20:44:59,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:44:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:44:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:44:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:44:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:44:59,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:44:59,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 82 transitions, 619 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 20:44:59,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:44:59,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:44:59,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:00,015 INFO L124 PetriNetUnfolderBase]: 196/420 cut-off events. [2024-06-27 20:45:00,015 INFO L125 PetriNetUnfolderBase]: For 22772/22772 co-relation queries the response was YES. [2024-06-27 20:45:00,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 420 events. 196/420 cut-off events. For 22772/22772 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1821 event pairs, 54 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 1900. Up to 221 conditions per place. [2024-06-27 20:45:00,018 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 31 changer transitions 12/96 dead transitions. [2024-06-27 20:45:00,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 96 transitions, 843 flow [2024-06-27 20:45:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:45:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:45:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:45:00,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:45:00,019 INFO L175 Difference]: Start difference. First operand has 155 places, 82 transitions, 619 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:45:00,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 96 transitions, 843 flow [2024-06-27 20:45:00,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 96 transitions, 765 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:45:00,042 INFO L231 Difference]: Finished difference. Result has 146 places, 76 transitions, 568 flow [2024-06-27 20:45:00,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=146, PETRI_TRANSITIONS=76} [2024-06-27 20:45:00,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-27 20:45:00,042 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 76 transitions, 568 flow [2024-06-27 20:45:00,042 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 20:45:00,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:00,043 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 20:45:00,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 20:45:00,043 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 20:45:00,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash 314850768, now seen corresponding path program 6 times [2024-06-27 20:45:00,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:00,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686874819] [2024-06-27 20:45:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686874819] [2024-06-27 20:45:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686874819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:01,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596443676] [2024-06-27 20:45:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:01,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:01,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 76 transitions, 568 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 20:45:01,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:01,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:01,735 INFO L124 PetriNetUnfolderBase]: 176/388 cut-off events. [2024-06-27 20:45:01,735 INFO L125 PetriNetUnfolderBase]: For 20100/20100 co-relation queries the response was YES. [2024-06-27 20:45:01,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 388 events. 176/388 cut-off events. For 20100/20100 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1666 event pairs, 46 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1742. Up to 191 conditions per place. [2024-06-27 20:45:01,737 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 16 changer transitions 35/92 dead transitions. [2024-06-27 20:45:01,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 92 transitions, 786 flow [2024-06-27 20:45:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:45:01,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 20:45:01,738 INFO L175 Difference]: Start difference. First operand has 146 places, 76 transitions, 568 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:45:01,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 92 transitions, 786 flow [2024-06-27 20:45:01,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 92 transitions, 709 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:01,761 INFO L231 Difference]: Finished difference. Result has 141 places, 55 transitions, 395 flow [2024-06-27 20:45:01,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=395, PETRI_PLACES=141, PETRI_TRANSITIONS=55} [2024-06-27 20:45:01,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-27 20:45:01,761 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 55 transitions, 395 flow [2024-06-27 20:45:01,761 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 20:45:01,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:01,762 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 20:45:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 20:45:01,762 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 20:45:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1053919294, now seen corresponding path program 7 times [2024-06-27 20:45:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854320129] [2024-06-27 20:45:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:01,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854320129] [2024-06-27 20:45:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854320129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458751045] [2024-06-27 20:45:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:03,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:03,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 55 transitions, 395 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 20:45:03,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:03,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:03,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:03,669 INFO L124 PetriNetUnfolderBase]: 140/301 cut-off events. [2024-06-27 20:45:03,669 INFO L125 PetriNetUnfolderBase]: For 18292/18292 co-relation queries the response was YES. [2024-06-27 20:45:03,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 301 events. 140/301 cut-off events. For 18292/18292 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1188 event pairs, 44 based on Foata normal form. 6/306 useless extension candidates. Maximal degree in co-relation 1397. Up to 227 conditions per place. [2024-06-27 20:45:03,671 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 11 changer transitions 13/69 dead transitions. [2024-06-27 20:45:03,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 69 transitions, 563 flow [2024-06-27 20:45:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-27 20:45:03,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-27 20:45:03,672 INFO L175 Difference]: Start difference. First operand has 141 places, 55 transitions, 395 flow. Second operand 11 states and 102 transitions. [2024-06-27 20:45:03,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 69 transitions, 563 flow [2024-06-27 20:45:03,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 69 transitions, 483 flow, removed 14 selfloop flow, removed 23 redundant places. [2024-06-27 20:45:03,685 INFO L231 Difference]: Finished difference. Result has 103 places, 51 transitions, 320 flow [2024-06-27 20:45:03,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=320, PETRI_PLACES=103, PETRI_TRANSITIONS=51} [2024-06-27 20:45:03,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-27 20:45:03,685 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 51 transitions, 320 flow [2024-06-27 20:45:03,685 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 20:45:03,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:03,686 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 20:45:03,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 20:45:03,686 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 20:45:03,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash -743855072, now seen corresponding path program 8 times [2024-06-27 20:45:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:03,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315177661] [2024-06-27 20:45:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:05,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:05,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315177661] [2024-06-27 20:45:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315177661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:05,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:05,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794857971] [2024-06-27 20:45:05,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:05,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:05,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:05,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 51 transitions, 320 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 20:45:05,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:05,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:05,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:06,145 INFO L124 PetriNetUnfolderBase]: 131/282 cut-off events. [2024-06-27 20:45:06,145 INFO L125 PetriNetUnfolderBase]: For 9230/9230 co-relation queries the response was YES. [2024-06-27 20:45:06,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 282 events. 131/282 cut-off events. For 9230/9230 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1081 event pairs, 37 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 1162. Up to 183 conditions per place. [2024-06-27 20:45:06,146 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 17 changer transitions 12/66 dead transitions. [2024-06-27 20:45:06,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 66 transitions, 486 flow [2024-06-27 20:45:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:45:06,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-27 20:45:06,148 INFO L175 Difference]: Start difference. First operand has 103 places, 51 transitions, 320 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:45:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 66 transitions, 486 flow [2024-06-27 20:45:06,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 66 transitions, 456 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:06,154 INFO L231 Difference]: Finished difference. Result has 97 places, 47 transitions, 305 flow [2024-06-27 20:45:06,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=305, PETRI_PLACES=97, PETRI_TRANSITIONS=47} [2024-06-27 20:45:06,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-27 20:45:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 47 transitions, 305 flow [2024-06-27 20:45:06,155 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 20:45:06,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:06,155 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 20:45:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 20:45:06,155 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 20:45:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -826568160, now seen corresponding path program 9 times [2024-06-27 20:45:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944482681] [2024-06-27 20:45:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944482681] [2024-06-27 20:45:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944482681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:07,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190356152] [2024-06-27 20:45:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:07,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:07,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:07,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 47 transitions, 305 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 20:45:07,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:07,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:07,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:07,643 INFO L124 PetriNetUnfolderBase]: 122/263 cut-off events. [2024-06-27 20:45:07,643 INFO L125 PetriNetUnfolderBase]: For 7604/7604 co-relation queries the response was YES. [2024-06-27 20:45:07,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 263 events. 122/263 cut-off events. For 7604/7604 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 961 event pairs, 42 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 1086. Up to 190 conditions per place. [2024-06-27 20:45:07,644 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 33 selfloop transitions, 8 changer transitions 18/61 dead transitions. [2024-06-27 20:45:07,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 61 transitions, 455 flow [2024-06-27 20:45:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-27 20:45:07,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-27 20:45:07,645 INFO L175 Difference]: Start difference. First operand has 97 places, 47 transitions, 305 flow. Second operand 11 states and 100 transitions. [2024-06-27 20:45:07,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 61 transitions, 455 flow [2024-06-27 20:45:07,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 61 transitions, 413 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:07,651 INFO L231 Difference]: Finished difference. Result has 91 places, 41 transitions, 250 flow [2024-06-27 20:45:07,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=250, PETRI_PLACES=91, PETRI_TRANSITIONS=41} [2024-06-27 20:45:07,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-27 20:45:07,652 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 41 transitions, 250 flow [2024-06-27 20:45:07,652 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 20:45:07,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:07,652 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 20:45:07,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 20:45:07,652 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 20:45:07,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1723255252, now seen corresponding path program 10 times [2024-06-27 20:45:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098853463] [2024-06-27 20:45:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:07,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098853463] [2024-06-27 20:45:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098853463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:08,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478593278] [2024-06-27 20:45:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:09,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:09,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 41 transitions, 250 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 20:45:09,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:09,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:09,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:09,344 INFO L124 PetriNetUnfolderBase]: 108/233 cut-off events. [2024-06-27 20:45:09,344 INFO L125 PetriNetUnfolderBase]: For 6096/6096 co-relation queries the response was YES. [2024-06-27 20:45:09,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 233 events. 108/233 cut-off events. For 6096/6096 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 37 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 940. Up to 143 conditions per place. [2024-06-27 20:45:09,345 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 28 selfloop transitions, 14 changer transitions 11/55 dead transitions. [2024-06-27 20:45:09,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 55 transitions, 390 flow [2024-06-27 20:45:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-27 20:45:09,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-27 20:45:09,346 INFO L175 Difference]: Start difference. First operand has 91 places, 41 transitions, 250 flow. Second operand 11 states and 99 transitions. [2024-06-27 20:45:09,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 55 transitions, 390 flow [2024-06-27 20:45:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 55 transitions, 362 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:09,350 INFO L231 Difference]: Finished difference. Result has 81 places, 38 transitions, 236 flow [2024-06-27 20:45:09,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=236, PETRI_PLACES=81, PETRI_TRANSITIONS=38} [2024-06-27 20:45:09,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-27 20:45:09,350 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 38 transitions, 236 flow [2024-06-27 20:45:09,351 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 20:45:09,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:09,351 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 20:45:09,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 20:45:09,351 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 20:45:09,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:09,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1723543552, now seen corresponding path program 11 times [2024-06-27 20:45:09,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:09,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295288027] [2024-06-27 20:45:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:10,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:10,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295288027] [2024-06-27 20:45:10,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295288027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:10,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:10,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:10,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422482398] [2024-06-27 20:45:10,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:10,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:10,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:10,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:10,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:10,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 38 transitions, 236 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 20:45:10,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:10,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:10,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:11,017 INFO L124 PetriNetUnfolderBase]: 98/215 cut-off events. [2024-06-27 20:45:11,017 INFO L125 PetriNetUnfolderBase]: For 4010/4010 co-relation queries the response was YES. [2024-06-27 20:45:11,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 215 events. 98/215 cut-off events. For 4010/4010 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 728 event pairs, 35 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 838. Up to 125 conditions per place. [2024-06-27 20:45:11,018 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 24 selfloop transitions, 11 changer transitions 15/52 dead transitions. [2024-06-27 20:45:11,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 52 transitions, 368 flow [2024-06-27 20:45:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-27 20:45:11,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-27 20:45:11,019 INFO L175 Difference]: Start difference. First operand has 81 places, 38 transitions, 236 flow. Second operand 11 states and 98 transitions. [2024-06-27 20:45:11,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 52 transitions, 368 flow [2024-06-27 20:45:11,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 52 transitions, 334 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:11,023 INFO L231 Difference]: Finished difference. Result has 77 places, 33 transitions, 199 flow [2024-06-27 20:45:11,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=199, PETRI_PLACES=77, PETRI_TRANSITIONS=33} [2024-06-27 20:45:11,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-27 20:45:11,023 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 33 transitions, 199 flow [2024-06-27 20:45:11,024 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 20:45:11,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:11,024 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 20:45:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 20:45:11,024 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 20:45:11,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash 73452806, now seen corresponding path program 12 times [2024-06-27 20:45:11,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:11,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235032124] [2024-06-27 20:45:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:11,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:11,977 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 20:45:11,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:11,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235032124] [2024-06-27 20:45:11,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235032124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:11,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:45:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194689794] [2024-06-27 20:45:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:45:11,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:45:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:45:12,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:12,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 33 transitions, 199 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 20:45:12,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:12,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:12,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:12,256 INFO L124 PetriNetUnfolderBase]: 70/155 cut-off events. [2024-06-27 20:45:12,257 INFO L125 PetriNetUnfolderBase]: For 2212/2212 co-relation queries the response was YES. [2024-06-27 20:45:12,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 155 events. 70/155 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 440 event pairs, 20 based on Foata normal form. 6/160 useless extension candidates. Maximal degree in co-relation 544. Up to 80 conditions per place. [2024-06-27 20:45:12,257 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 22 selfloop transitions, 10 changer transitions 12/46 dead transitions. [2024-06-27 20:45:12,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 46 transitions, 317 flow [2024-06-27 20:45:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-27 20:45:12,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-27 20:45:12,258 INFO L175 Difference]: Start difference. First operand has 77 places, 33 transitions, 199 flow. Second operand 11 states and 95 transitions. [2024-06-27 20:45:12,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 46 transitions, 317 flow [2024-06-27 20:45:12,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 46 transitions, 285 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:45:12,260 INFO L231 Difference]: Finished difference. Result has 69 places, 29 transitions, 164 flow [2024-06-27 20:45:12,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=164, PETRI_PLACES=69, PETRI_TRANSITIONS=29} [2024-06-27 20:45:12,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-27 20:45:12,261 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 29 transitions, 164 flow [2024-06-27 20:45:12,261 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 20:45:12,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:12,261 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 20:45:12,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 20:45:12,262 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 20:45:12,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1061000432, now seen corresponding path program 13 times [2024-06-27 20:45:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:12,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950048354] [2024-06-27 20:45:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:45:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950048354] [2024-06-27 20:45:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950048354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:13,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166621124] [2024-06-27 20:45:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:13,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:13,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:13,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 29 transitions, 164 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 20:45:13,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:13,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:13,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:13,593 INFO L124 PetriNetUnfolderBase]: 57/132 cut-off events. [2024-06-27 20:45:13,594 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-06-27 20:45:13,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 132 events. 57/132 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 335 event pairs, 18 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 444. Up to 60 conditions per place. [2024-06-27 20:45:13,594 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 16/42 dead transitions. [2024-06-27 20:45:13,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 42 transitions, 272 flow [2024-06-27 20:45:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-27 20:45:13,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2756598240469208 [2024-06-27 20:45:13,595 INFO L175 Difference]: Start difference. First operand has 69 places, 29 transitions, 164 flow. Second operand 11 states and 94 transitions. [2024-06-27 20:45:13,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 42 transitions, 272 flow [2024-06-27 20:45:13,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 42 transitions, 246 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:45:13,597 INFO L231 Difference]: Finished difference. Result has 64 places, 22 transitions, 112 flow [2024-06-27 20:45:13,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=22} [2024-06-27 20:45:13,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-27 20:45:13,597 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 22 transitions, 112 flow [2024-06-27 20:45:13,597 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 20:45:13,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:45:13,598 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 20:45:13,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 20:45:13,598 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 20:45:13,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:45:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash 416039696, now seen corresponding path program 14 times [2024-06-27 20:45:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:45:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065782277] [2024-06-27 20:45:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:45:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:45:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:45:14,858 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 20:45:14,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:45:14,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065782277] [2024-06-27 20:45:14,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065782277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:45:14,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:45:14,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:45:14,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424096296] [2024-06-27 20:45:14,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:45:14,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:45:14,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:45:14,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:45:14,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:45:14,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:45:14,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 22 transitions, 112 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 20:45:14,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:45:14,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:45:14,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:45:15,163 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-27 20:45:15,164 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-06-27 20:45:15,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 70 events. 27/70 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 1 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-06-27 20:45:15,164 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-27 20:45:15,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 31 transitions, 162 flow [2024-06-27 20:45:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:45:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:45:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-27 20:45:15,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24926686217008798 [2024-06-27 20:45:15,165 INFO L175 Difference]: Start difference. First operand has 64 places, 22 transitions, 112 flow. Second operand 11 states and 85 transitions. [2024-06-27 20:45:15,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 31 transitions, 162 flow [2024-06-27 20:45:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-27 20:45:15,165 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-27 20:45:15,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=11, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-27 20:45:15,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 20:45:15,165 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-27 20:45:15,166 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 20:45:15,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:45:15,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:45:15,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:45:15,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:45:15,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 20:45:15,169 INFO L445 BasicCegarLoop]: Path program histogram: [42, 25, 22, 14, 12, 11, 10, 9, 7, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:45:15,171 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:45:15,171 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:45:15,178 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:45:15,178 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:45:15,179 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:45:15 BasicIcfg [2024-06-27 20:45:15,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:45:15,180 INFO L158 Benchmark]: Toolchain (without parser) took 280241.60ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 125.1MB in the beginning and 1.1GB in the end (delta: -939.2MB). Peak memory consumption was 266.8MB. Max. memory is 16.1GB. [2024-06-27 20:45:15,180 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 52.5MB in the beginning and 52.4MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:45:15,180 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory was 85.5MB in the beginning and 85.4MB in the end (delta: 114.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:45:15,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.27ms. Allocated memory is still 153.1MB. Free memory was 124.7MB in the beginning and 89.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-27 20:45:15,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.33ms. Allocated memory is still 153.1MB. Free memory was 89.0MB in the beginning and 86.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:45:15,181 INFO L158 Benchmark]: Boogie Preprocessor took 34.63ms. Allocated memory is still 153.1MB. Free memory was 86.0MB in the beginning and 81.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:45:15,181 INFO L158 Benchmark]: RCFGBuilder took 632.39ms. Allocated memory is still 153.1MB. Free memory was 81.8MB in the beginning and 70.8MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-27 20:45:15,181 INFO L158 Benchmark]: TraceAbstraction took 278964.81ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 70.0MB in the beginning and 1.1GB in the end (delta: -994.2MB). Peak memory consumption was 212.2MB. Max. memory is 16.1GB. [2024-06-27 20:45:15,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 52.5MB in the beginning and 52.4MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory was 85.5MB in the beginning and 85.4MB in the end (delta: 114.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.27ms. Allocated memory is still 153.1MB. Free memory was 124.7MB in the beginning and 89.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.33ms. Allocated memory is still 153.1MB. Free memory was 89.0MB in the beginning and 86.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.63ms. Allocated memory is still 153.1MB. Free memory was 86.0MB in the beginning and 81.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 632.39ms. Allocated memory is still 153.1MB. Free memory was 81.8MB in the beginning and 70.8MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 278964.81ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 70.0MB in the beginning and 1.1GB in the end (delta: -994.2MB). Peak memory consumption was 212.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: 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: 278.9s, OverallIterations: 192, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 125.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10278 SdHoareTripleChecker+Valid, 42.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8755 mSDsluCounter, 10186 SdHoareTripleChecker+Invalid, 36.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9023 mSDsCounter, 3627 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67734 IncrementalHoareTripleChecker+Invalid, 71361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3627 mSolverCounterUnsat, 1163 mSDtfsCounter, 67734 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2229 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4755 ImplicationChecksByTransitivity, 53.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5077occurred in iteration=123, InterpolantAutomatonStates: 1830, 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: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 151.0s InterpolantComputationTime, 3162 NumberOfCodeBlocks, 3162 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 2970 ConstructedInterpolants, 0 QuantifiedInterpolants, 119268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 192 InterpolantComputations, 192 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 20:45:15,222 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