./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.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/rfi003_tso.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/rfi003_tso.i ./goblint.2024-06-19_11-23-25.files/protection/rfi003_tso.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 19:17:58,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:17:58,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:17:58,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:17:58,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:17:58,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:17:58,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:17:58,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:17:58,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:17:58,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:17:58,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:17:58,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:17:58,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:17:58,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:17:58,398 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:17:58,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:17:58,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:17:58,399 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:17:58,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:17:58,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:17:58,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:17:58,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:17:58,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:17:58,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:17:58,401 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:17:58,401 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:17:58,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:17:58,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:17:58,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:17:58,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:17:58,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:17:58,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:17:58,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:17:58,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:17:58,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:17:58,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:17:58,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:17:58,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:17:58,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:17:58,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:17:58,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:17:58,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:17:58,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:17:58,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:17:58,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:17:58,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:17:58,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:17:58,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:17:58,673 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:17:58,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-27 19:17:59,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:17:59,870 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:17:59,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-27 19:17:59,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9aa008/2eb7db8653074122bf593b38228a7ba2/FLAGbd5c878c0 [2024-06-27 19:17:59,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9aa008/2eb7db8653074122bf593b38228a7ba2 [2024-06-27 19:17:59,899 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:17:59,899 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:17:59,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi003_tso.yml/witness.yml [2024-06-27 19:18:00,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:18:00,026 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:18:00,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:18:00,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:18:00,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:18:00,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:59" (1/2) ... [2024-06-27 19:18:00,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ece27d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00, skipping insertion in model container [2024-06-27 19:18:00,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:59" (1/2) ... [2024-06-27 19:18:00,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@588c5617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:18:00, skipping insertion in model container [2024-06-27 19:18:00,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:18:00" (2/2) ... [2024-06-27 19:18:00,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ece27d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00, skipping insertion in model container [2024-06-27 19:18:00,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:18:00" (2/2) ... [2024-06-27 19:18:00,035 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:18:00,099 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:18:00,101 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) [2024-06-27 19:18:00,101 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) [2024-06-27 19:18:00,101 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:18:00,101 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-27 19:18:00,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:18:00,462 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:18:00,474 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:18:00,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:18:00,610 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:18:00,611 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00 WrapperNode [2024-06-27 19:18:00,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:18:00,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:18:00,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:18:00,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:18:00,617 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,631 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,663 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-27 19:18:00,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:18:00,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:18:00,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:18:00,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:18:00,672 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,672 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,675 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,687 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 19:18:00,688 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,688 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,709 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,713 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,714 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,715 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:18:00,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:18:00,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:18:00,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:18:00,729 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 07:18:00" (1/1) ... [2024-06-27 19:18:00,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:18:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:18:00,837 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 19:18:00,861 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 19:18:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:18:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:18:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:18:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:18:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:18:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:18:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:18:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:18:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:18:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:18:00,888 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 19:18:00,996 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:18:00,997 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:18:01,298 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:18:01,298 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:18:01,459 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:18:01,459 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:18:01,461 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:18:01 BoogieIcfgContainer [2024-06-27 19:18:01,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:18:01,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:18:01,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:18:01,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:18:01,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:17:59" (1/4) ... [2024-06-27 19:18:01,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233280a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:18:01, skipping insertion in model container [2024-06-27 19:18:01,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:18:00" (2/4) ... [2024-06-27 19:18:01,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233280a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:18:01, skipping insertion in model container [2024-06-27 19:18:01,468 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 07:18:00" (3/4) ... [2024-06-27 19:18:01,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7233280a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:18:01, skipping insertion in model container [2024-06-27 19:18:01,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:18:01" (4/4) ... [2024-06-27 19:18:01,470 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-27 19:18:01,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:18:01,483 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:18:01,483 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:18:01,534 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:18:01,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:18:01,586 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 19:18:01,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:18:01,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:18:01,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:18:01,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 19:18:01,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:18:01,609 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;@1ea773fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:18:01,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:18:01,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:18:01,611 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:18:01,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:18:01,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:01,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:18:01,613 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 19:18:01,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:01,617 INFO L85 PathProgramCache]: Analyzing trace with hash 410284939, now seen corresponding path program 1 times [2024-06-27 19:18:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141457238] [2024-06-27 19:18:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:01,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141457238] [2024-06-27 19:18:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141457238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:02,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:02,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:18:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002604386] [2024-06-27 19:18:02,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:02,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:18:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:18:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:18:02,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:18:02,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:02,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:02,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:18:02,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:02,539 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-27 19:18:02,539 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 19:18:02,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 391 events. 216/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1471 event pairs, 133 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-27 19:18:02,545 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 19:18:02,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-27 19:18:02,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:18:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:18:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-27 19:18:02,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:18:02,556 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-27 19:18:02,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-27 19:18:02,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:02,560 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 19:18:02,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-27 19:18:02,564 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 19:18:02,564 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 19:18:02,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:02,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:02,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:18:02,565 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 19:18:02,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash -853149910, now seen corresponding path program 1 times [2024-06-27 19:18:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18247358] [2024-06-27 19:18:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18247358] [2024-06-27 19:18:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18247358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:18:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814437235] [2024-06-27 19:18:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:03,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:18:03,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:18:03,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:18:03,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:18:03,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:03,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:18:03,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:03,239 INFO L124 PetriNetUnfolderBase]: 207/376 cut-off events. [2024-06-27 19:18:03,239 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-06-27 19:18:03,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 376 events. 207/376 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1426 event pairs, 76 based on Foata normal form. 6/381 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-27 19:18:03,244 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-27 19:18:03,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 171 flow [2024-06-27 19:18:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:18:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:18:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-27 19:18:03,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 19:18:03,248 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 68 transitions. [2024-06-27 19:18:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 171 flow [2024-06-27 19:18:03,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:18:03,252 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 19:18:03,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-27 19:18:03,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 19:18:03,253 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 19:18:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:03,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:03,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:18:03,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:03,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1413365843, now seen corresponding path program 1 times [2024-06-27 19:18:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815860126] [2024-06-27 19:18:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815860126] [2024-06-27 19:18:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815860126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:03,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:18:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642918644] [2024-06-27 19:18:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:03,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:18:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:18:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:18:03,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:03,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 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 19:18:03,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:03,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:03,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:03,874 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-27 19:18:03,874 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-27 19:18:03,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 432 events. 243/432 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1578 event pairs, 144 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-27 19:18:03,876 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-27 19:18:03,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 181 flow [2024-06-27 19:18:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:18:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:18:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-27 19:18:03,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:18:03,879 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 57 transitions. [2024-06-27 19:18:03,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 181 flow [2024-06-27 19:18:03,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:03,882 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-27 19:18:03,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-27 19:18:03,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 19:18:03,883 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-27 19:18:03,883 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 19:18:03,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:03,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:18:03,885 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 19:18:03,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1318769256, now seen corresponding path program 1 times [2024-06-27 19:18:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:03,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37044123] [2024-06-27 19:18:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:05,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37044123] [2024-06-27 19:18:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37044123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:05,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:05,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465958904] [2024-06-27 19:18:05,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:05,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:05,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:05,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:18:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:18:05,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:18:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:05,397 INFO L124 PetriNetUnfolderBase]: 239/424 cut-off events. [2024-06-27 19:18:05,397 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-27 19:18:05,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 424 events. 239/424 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1486 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-27 19:18:05,399 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-27 19:18:05,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 241 flow [2024-06-27 19:18:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 19:18:05,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 19:18:05,401 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 86 transitions. [2024-06-27 19:18:05,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 241 flow [2024-06-27 19:18:05,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 230 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:05,403 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-27 19:18:05,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-27 19:18:05,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-27 19:18:05,404 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-27 19:18:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 19:18:05,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:05,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:05,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:18:05,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:05,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:05,405 INFO L85 PathProgramCache]: Analyzing trace with hash 864669008, now seen corresponding path program 1 times [2024-06-27 19:18:05,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:05,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078526600] [2024-06-27 19:18:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078526600] [2024-06-27 19:18:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078526600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:05,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482856219] [2024-06-27 19:18:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:05,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:05,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 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 19:18:05,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:05,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:05,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:06,057 INFO L124 PetriNetUnfolderBase]: 237/421 cut-off events. [2024-06-27 19:18:06,057 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-27 19:18:06,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 421 events. 237/421 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1477 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1211. Up to 407 conditions per place. [2024-06-27 19:18:06,059 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-27 19:18:06,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 225 flow [2024-06-27 19:18:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-27 19:18:06,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:18:06,062 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 64 transitions. [2024-06-27 19:18:06,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 225 flow [2024-06-27 19:18:06,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 209 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:06,066 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-27 19:18:06,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 19:18:06,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-27 19:18:06,067 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-27 19:18:06,067 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 19:18:06,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:06,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:06,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:18:06,068 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 19:18:06,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1228321980, now seen corresponding path program 1 times [2024-06-27 19:18:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314444615] [2024-06-27 19:18:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:06,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314444615] [2024-06-27 19:18:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314444615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:06,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:06,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:06,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008834085] [2024-06-27 19:18:06,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:06,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:06,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:06,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:06,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 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 19:18:06,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:06,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:06,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:06,705 INFO L124 PetriNetUnfolderBase]: 243/431 cut-off events. [2024-06-27 19:18:06,706 INFO L125 PetriNetUnfolderBase]: For 830/830 co-relation queries the response was YES. [2024-06-27 19:18:06,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 431 events. 243/431 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1528 event pairs, 82 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 1309. Up to 385 conditions per place. [2024-06-27 19:18:06,708 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-27 19:18:06,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 294 flow [2024-06-27 19:18:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-27 19:18:06,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:18:06,709 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 72 transitions. [2024-06-27 19:18:06,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 294 flow [2024-06-27 19:18:06,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 277 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:06,711 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 176 flow [2024-06-27 19:18:06,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-27 19:18:06,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-27 19:18:06,712 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 176 flow [2024-06-27 19:18:06,712 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 19:18:06,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:06,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:18:06,712 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 19:18:06,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1059058120, now seen corresponding path program 2 times [2024-06-27 19:18:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134553034] [2024-06-27 19:18:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134553034] [2024-06-27 19:18:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134553034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:07,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303325684] [2024-06-27 19:18:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:07,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:07,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 176 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 19:18:07,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:07,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:07,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:07,385 INFO L124 PetriNetUnfolderBase]: 239/426 cut-off events. [2024-06-27 19:18:07,386 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-27 19:18:07,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 426 events. 239/426 cut-off events. For 1129/1129 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1518 event pairs, 88 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 1379. Up to 382 conditions per place. [2024-06-27 19:18:07,388 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-27 19:18:07,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 284 flow [2024-06-27 19:18:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 19:18:07,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:18:07,390 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 176 flow. Second operand 6 states and 69 transitions. [2024-06-27 19:18:07,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 284 flow [2024-06-27 19:18:07,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 270 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:07,392 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 189 flow [2024-06-27 19:18:07,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-27 19:18:07,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-27 19:18:07,392 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 189 flow [2024-06-27 19:18:07,393 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 19:18:07,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:07,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:07,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:18:07,393 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 19:18:07,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1034936338, now seen corresponding path program 1 times [2024-06-27 19:18:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065387636] [2024-06-27 19:18:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:07,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065387636] [2024-06-27 19:18:07,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065387636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:07,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:07,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:07,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958126730] [2024-06-27 19:18:07,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:07,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:08,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:08,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 189 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 19:18:08,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:08,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:08,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:08,172 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-27 19:18:08,173 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-27 19:18:08,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 422 events. 237/422 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1497 event pairs, 99 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1412. Up to 405 conditions per place. [2024-06-27 19:18:08,178 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-27 19:18:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 303 flow [2024-06-27 19:18:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 19:18:08,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-27 19:18:08,180 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 189 flow. Second operand 7 states and 72 transitions. [2024-06-27 19:18:08,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 303 flow [2024-06-27 19:18:08,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 273 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:08,183 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 198 flow [2024-06-27 19:18:08,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 19:18:08,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-27 19:18:08,184 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 198 flow [2024-06-27 19:18:08,184 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 19:18:08,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:08,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:08,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:18:08,185 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 19:18:08,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash 955424733, now seen corresponding path program 1 times [2024-06-27 19:18:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046355184] [2024-06-27 19:18:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:08,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046355184] [2024-06-27 19:18:08,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046355184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:08,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320061123] [2024-06-27 19:18:08,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:08,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:08,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:08,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 198 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 19:18:08,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:08,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:08,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:08,860 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-27 19:18:08,860 INFO L125 PetriNetUnfolderBase]: For 1686/1686 co-relation queries the response was YES. [2024-06-27 19:18:08,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 433 events. 243/433 cut-off events. For 1686/1686 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1545 event pairs, 85 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1493. Up to 383 conditions per place. [2024-06-27 19:18:08,863 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-27 19:18:08,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 362 flow [2024-06-27 19:18:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 19:18:08,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-27 19:18:08,864 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 198 flow. Second operand 7 states and 79 transitions. [2024-06-27 19:18:08,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 362 flow [2024-06-27 19:18:08,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 339 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:08,866 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 260 flow [2024-06-27 19:18:08,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-06-27 19:18:08,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-27 19:18:08,867 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 260 flow [2024-06-27 19:18:08,867 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 19:18:08,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:08,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:08,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:18:08,868 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 19:18:08,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1528668903, now seen corresponding path program 2 times [2024-06-27 19:18:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517009064] [2024-06-27 19:18:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:09,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:09,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517009064] [2024-06-27 19:18:09,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517009064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:09,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:09,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:09,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163558185] [2024-06-27 19:18:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:09,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:09,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:09,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:09,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:09,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:09,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 260 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 19:18:09,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:09,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:09,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:09,543 INFO L124 PetriNetUnfolderBase]: 249/443 cut-off events. [2024-06-27 19:18:09,543 INFO L125 PetriNetUnfolderBase]: For 2176/2178 co-relation queries the response was YES. [2024-06-27 19:18:09,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 443 events. 249/443 cut-off events. For 2176/2178 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1601 event pairs, 81 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 1692. Up to 371 conditions per place. [2024-06-27 19:18:09,546 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 21 changer transitions 0/61 dead transitions. [2024-06-27 19:18:09,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 455 flow [2024-06-27 19:18:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 19:18:09,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 19:18:09,547 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 260 flow. Second operand 7 states and 80 transitions. [2024-06-27 19:18:09,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 455 flow [2024-06-27 19:18:09,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 439 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:09,550 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 319 flow [2024-06-27 19:18:09,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-27 19:18:09,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-27 19:18:09,550 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 319 flow [2024-06-27 19:18:09,551 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 19:18:09,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:09,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:09,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:18:09,551 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 19:18:09,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1162078173, now seen corresponding path program 3 times [2024-06-27 19:18:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463495417] [2024-06-27 19:18:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:09,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463495417] [2024-06-27 19:18:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463495417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:09,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684314603] [2024-06-27 19:18:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:10,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:10,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 319 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 19:18:10,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:10,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:10,275 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-27 19:18:10,275 INFO L125 PetriNetUnfolderBase]: For 2693/2695 co-relation queries the response was YES. [2024-06-27 19:18:10,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 445 events. 250/445 cut-off events. For 2693/2695 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1597 event pairs, 86 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 1791. Up to 395 conditions per place. [2024-06-27 19:18:10,278 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-27 19:18:10,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 480 flow [2024-06-27 19:18:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-27 19:18:10,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:18:10,279 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 319 flow. Second operand 7 states and 77 transitions. [2024-06-27 19:18:10,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 480 flow [2024-06-27 19:18:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 451 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:10,282 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 359 flow [2024-06-27 19:18:10,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-27 19:18:10,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-27 19:18:10,283 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 359 flow [2024-06-27 19:18:10,283 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 19:18:10,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:10,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:18:10,284 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 19:18:10,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2018256303, now seen corresponding path program 1 times [2024-06-27 19:18:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740389011] [2024-06-27 19:18:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:11,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:11,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740389011] [2024-06-27 19:18:11,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740389011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:11,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:11,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:11,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536766040] [2024-06-27 19:18:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:11,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:11,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:11,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:11,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 359 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 19:18:11,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:11,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:11,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:11,542 INFO L124 PetriNetUnfolderBase]: 248/441 cut-off events. [2024-06-27 19:18:11,542 INFO L125 PetriNetUnfolderBase]: For 2983/2983 co-relation queries the response was YES. [2024-06-27 19:18:11,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 441 events. 248/441 cut-off events. For 2983/2983 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1569 event pairs, 77 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1845. Up to 421 conditions per place. [2024-06-27 19:18:11,545 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-27 19:18:11,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 511 flow [2024-06-27 19:18:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 19:18:11,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:18:11,547 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 359 flow. Second operand 8 states and 80 transitions. [2024-06-27 19:18:11,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 511 flow [2024-06-27 19:18:11,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 488 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:11,550 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 381 flow [2024-06-27 19:18:11,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-27 19:18:11,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-27 19:18:11,551 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 381 flow [2024-06-27 19:18:11,551 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 19:18:11,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:11,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:11,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:18:11,552 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 19:18:11,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash -451372027, now seen corresponding path program 1 times [2024-06-27 19:18:11,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:11,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716803266] [2024-06-27 19:18:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:11,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:12,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:12,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716803266] [2024-06-27 19:18:12,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716803266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:12,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:12,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511231942] [2024-06-27 19:18:12,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:12,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:12,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:12,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 381 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 19:18:12,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:12,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:12,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:12,632 INFO L124 PetriNetUnfolderBase]: 254/451 cut-off events. [2024-06-27 19:18:12,632 INFO L125 PetriNetUnfolderBase]: For 3486/3486 co-relation queries the response was YES. [2024-06-27 19:18:12,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 451 events. 254/451 cut-off events. For 3486/3486 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1619 event pairs, 55 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 1938. Up to 399 conditions per place. [2024-06-27 19:18:12,635 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-27 19:18:12,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 567 flow [2024-06-27 19:18:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:12,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 19:18:12,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-27 19:18:12,636 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 381 flow. Second operand 7 states and 81 transitions. [2024-06-27 19:18:12,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 567 flow [2024-06-27 19:18:12,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 538 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:12,640 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 393 flow [2024-06-27 19:18:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-27 19:18:12,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-27 19:18:12,641 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 393 flow [2024-06-27 19:18:12,641 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 19:18:12,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:12,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:12,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:18:12,642 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 19:18:12,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash -451251871, now seen corresponding path program 1 times [2024-06-27 19:18:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:12,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755985204] [2024-06-27 19:18:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755985204] [2024-06-27 19:18:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755985204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:13,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865153312] [2024-06-27 19:18:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:13,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:13,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:13,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 393 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 19:18:13,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:13,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:13,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:13,527 INFO L124 PetriNetUnfolderBase]: 257/456 cut-off events. [2024-06-27 19:18:13,528 INFO L125 PetriNetUnfolderBase]: For 4000/4000 co-relation queries the response was YES. [2024-06-27 19:18:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 456 events. 257/456 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1656 event pairs, 75 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2045. Up to 404 conditions per place. [2024-06-27 19:18:13,531 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-27 19:18:13,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 577 flow [2024-06-27 19:18:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 19:18:13,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 19:18:13,532 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 393 flow. Second operand 7 states and 80 transitions. [2024-06-27 19:18:13,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 577 flow [2024-06-27 19:18:13,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 552 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:13,536 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 434 flow [2024-06-27 19:18:13,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2024-06-27 19:18:13,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-27 19:18:13,537 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 434 flow [2024-06-27 19:18:13,537 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 19:18:13,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:13,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:18:13,538 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 19:18:13,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash -446783407, now seen corresponding path program 2 times [2024-06-27 19:18:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:13,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039884355] [2024-06-27 19:18:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039884355] [2024-06-27 19:18:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039884355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768074258] [2024-06-27 19:18:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:14,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:14,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:14,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 434 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 19:18:14,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:14,650 INFO L124 PetriNetUnfolderBase]: 263/466 cut-off events. [2024-06-27 19:18:14,651 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-27 19:18:14,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 466 events. 263/466 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1722 event pairs, 55 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-27 19:18:14,654 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-27 19:18:14,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 672 flow [2024-06-27 19:18:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 19:18:14,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-27 19:18:14,655 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 434 flow. Second operand 7 states and 85 transitions. [2024-06-27 19:18:14,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 672 flow [2024-06-27 19:18:14,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 636 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:14,661 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 475 flow [2024-06-27 19:18:14,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-27 19:18:14,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-27 19:18:14,663 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 475 flow [2024-06-27 19:18:14,663 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 19:18:14,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:14,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:14,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:18:14,663 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 19:18:14,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 698610371, now seen corresponding path program 1 times [2024-06-27 19:18:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505541193] [2024-06-27 19:18:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505541193] [2024-06-27 19:18:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505541193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:15,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:15,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587220544] [2024-06-27 19:18:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:15,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:15,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 475 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 19:18:15,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:15,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:15,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:15,415 INFO L124 PetriNetUnfolderBase]: 269/477 cut-off events. [2024-06-27 19:18:15,415 INFO L125 PetriNetUnfolderBase]: For 5470/5470 co-relation queries the response was YES. [2024-06-27 19:18:15,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 477 events. 269/477 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1763 event pairs, 80 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-27 19:18:15,418 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-27 19:18:15,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 677 flow [2024-06-27 19:18:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 19:18:15,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:18:15,420 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 475 flow. Second operand 8 states and 88 transitions. [2024-06-27 19:18:15,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 677 flow [2024-06-27 19:18:15,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 653 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:15,425 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 512 flow [2024-06-27 19:18:15,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-27 19:18:15,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-27 19:18:15,426 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 512 flow [2024-06-27 19:18:15,426 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 19:18:15,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:15,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:15,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:18:15,427 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 19:18:15,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash -144094871, now seen corresponding path program 2 times [2024-06-27 19:18:15,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:15,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591389745] [2024-06-27 19:18:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:16,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:16,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591389745] [2024-06-27 19:18:16,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591389745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:16,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:16,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562947325] [2024-06-27 19:18:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:16,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:16,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 512 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 19:18:16,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:16,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:16,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:16,318 INFO L124 PetriNetUnfolderBase]: 285/504 cut-off events. [2024-06-27 19:18:16,319 INFO L125 PetriNetUnfolderBase]: For 6479/6479 co-relation queries the response was YES. [2024-06-27 19:18:16,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 504 events. 285/504 cut-off events. For 6479/6479 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1879 event pairs, 74 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 2501. Up to 387 conditions per place. [2024-06-27 19:18:16,322 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 53 selfloop transitions, 32 changer transitions 0/87 dead transitions. [2024-06-27 19:18:16,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 864 flow [2024-06-27 19:18:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:18:16,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 19:18:16,323 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 512 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:18:16,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 864 flow [2024-06-27 19:18:16,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 813 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:16,331 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 602 flow [2024-06-27 19:18:16,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-27 19:18:16,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-27 19:18:16,332 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 602 flow [2024-06-27 19:18:16,334 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 19:18:16,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:16,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:16,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:18:16,334 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 19:18:16,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1867144911, now seen corresponding path program 3 times [2024-06-27 19:18:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:16,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428796862] [2024-06-27 19:18:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:16,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:16,898 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 19:18:16,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428796862] [2024-06-27 19:18:16,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428796862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:16,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482986912] [2024-06-27 19:18:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:16,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:16,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:16,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 602 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 19:18:16,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:16,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:16,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:17,172 INFO L124 PetriNetUnfolderBase]: 286/505 cut-off events. [2024-06-27 19:18:17,172 INFO L125 PetriNetUnfolderBase]: For 7185/7187 co-relation queries the response was YES. [2024-06-27 19:18:17,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 505 events. 286/505 cut-off events. For 7185/7187 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1889 event pairs, 86 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 2605. Up to 447 conditions per place. [2024-06-27 19:18:17,175 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-27 19:18:17,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 814 flow [2024-06-27 19:18:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 19:18:17,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:18:17,176 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 602 flow. Second operand 8 states and 86 transitions. [2024-06-27 19:18:17,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 814 flow [2024-06-27 19:18:17,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 784 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:17,182 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 641 flow [2024-06-27 19:18:17,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-06-27 19:18:17,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-27 19:18:17,183 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 641 flow [2024-06-27 19:18:17,183 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 19:18:17,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:17,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:17,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:18:17,184 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 19:18:17,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1858574031, now seen corresponding path program 4 times [2024-06-27 19:18:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065537695] [2024-06-27 19:18:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:17,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:17,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065537695] [2024-06-27 19:18:17,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065537695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:17,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:17,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:17,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457553280] [2024-06-27 19:18:17,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:17,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:17,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:17,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:17,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 641 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 19:18:17,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:17,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:17,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:17,969 INFO L124 PetriNetUnfolderBase]: 282/498 cut-off events. [2024-06-27 19:18:17,970 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-06-27 19:18:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 498 events. 282/498 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1854 event pairs, 79 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2610. Up to 475 conditions per place. [2024-06-27 19:18:17,974 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-27 19:18:17,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 832 flow [2024-06-27 19:18:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 19:18:17,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-27 19:18:17,976 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 641 flow. Second operand 8 states and 81 transitions. [2024-06-27 19:18:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 832 flow [2024-06-27 19:18:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 777 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:17,985 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 615 flow [2024-06-27 19:18:17,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=615, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-27 19:18:17,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-27 19:18:17,986 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 615 flow [2024-06-27 19:18:17,986 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 19:18:17,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:17,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:17,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:18:17,986 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 19:18:17,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151669, now seen corresponding path program 2 times [2024-06-27 19:18:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:17,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351034367] [2024-06-27 19:18:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:17,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:18,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:18,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351034367] [2024-06-27 19:18:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351034367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:18,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:18,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:18,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505270711] [2024-06-27 19:18:18,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:18,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:18,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:18,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 615 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 19:18:18,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:18,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:18,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:18,987 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-27 19:18:18,988 INFO L125 PetriNetUnfolderBase]: For 8005/8007 co-relation queries the response was YES. [2024-06-27 19:18:18,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 496 events. 280/496 cut-off events. For 8005/8007 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1857 event pairs, 85 based on Foata normal form. 1/496 useless extension candidates. Maximal degree in co-relation 2585. Up to 443 conditions per place. [2024-06-27 19:18:18,991 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-27 19:18:18,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 82 transitions, 795 flow [2024-06-27 19:18:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:18:18,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-27 19:18:18,993 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 615 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:18:18,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 82 transitions, 795 flow [2024-06-27 19:18:18,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 82 transitions, 766 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:19,000 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 632 flow [2024-06-27 19:18:19,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-27 19:18:19,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-27 19:18:19,001 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 632 flow [2024-06-27 19:18:19,001 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 19:18:19,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:19,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:19,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:18:19,001 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 19:18:19,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1664678917, now seen corresponding path program 3 times [2024-06-27 19:18:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:19,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540780060] [2024-06-27 19:18:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540780060] [2024-06-27 19:18:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540780060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:19,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:19,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:19,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969745067] [2024-06-27 19:18:19,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:19,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:19,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:19,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 632 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 19:18:19,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:19,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:19,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:20,106 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-27 19:18:20,106 INFO L125 PetriNetUnfolderBase]: For 8612/8614 co-relation queries the response was YES. [2024-06-27 19:18:20,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 490 events. 276/490 cut-off events. For 8612/8614 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1824 event pairs, 72 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 2580. Up to 408 conditions per place. [2024-06-27 19:18:20,110 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-27 19:18:20,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 85 transitions, 822 flow [2024-06-27 19:18:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 19:18:20,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 19:18:20,111 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 632 flow. Second operand 7 states and 82 transitions. [2024-06-27 19:18:20,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 85 transitions, 822 flow [2024-06-27 19:18:20,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 757 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:20,118 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 612 flow [2024-06-27 19:18:20,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-06-27 19:18:20,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-27 19:18:20,119 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 612 flow [2024-06-27 19:18:20,119 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 19:18:20,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:20,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:20,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:18:20,120 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 19:18:20,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1673267653, now seen corresponding path program 1 times [2024-06-27 19:18:20,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:20,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44333726] [2024-06-27 19:18:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:20,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44333726] [2024-06-27 19:18:21,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44333726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:21,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:21,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:21,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460683232] [2024-06-27 19:18:21,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:21,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:21,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:21,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:21,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:21,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:21,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 612 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 19:18:21,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:21,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:21,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:21,738 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-27 19:18:21,739 INFO L125 PetriNetUnfolderBase]: For 8108/8108 co-relation queries the response was YES. [2024-06-27 19:18:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 486 events. 274/486 cut-off events. For 8108/8108 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1797 event pairs, 77 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2538. Up to 463 conditions per place. [2024-06-27 19:18:21,744 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-27 19:18:21,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 85 transitions, 813 flow [2024-06-27 19:18:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 19:18:21,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-27 19:18:21,746 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 612 flow. Second operand 8 states and 81 transitions. [2024-06-27 19:18:21,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 85 transitions, 813 flow [2024-06-27 19:18:21,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 762 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:21,754 INFO L231 Difference]: Finished difference. Result has 95 places, 77 transitions, 611 flow [2024-06-27 19:18:21,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=95, PETRI_TRANSITIONS=77} [2024-06-27 19:18:21,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-27 19:18:21,755 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 77 transitions, 611 flow [2024-06-27 19:18:21,755 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 19:18:21,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:21,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:18:21,756 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 19:18:21,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1584932122, now seen corresponding path program 1 times [2024-06-27 19:18:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824487094] [2024-06-27 19:18:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:22,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824487094] [2024-06-27 19:18:22,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824487094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:22,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:22,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969464115] [2024-06-27 19:18:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:22,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:22,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:22,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:22,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 77 transitions, 611 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 19:18:22,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:22,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:22,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:22,812 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-27 19:18:22,812 INFO L125 PetriNetUnfolderBase]: For 8856/8856 co-relation queries the response was YES. [2024-06-27 19:18:22,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 501 events. 283/501 cut-off events. For 8856/8856 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1871 event pairs, 55 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2628. Up to 443 conditions per place. [2024-06-27 19:18:22,816 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-27 19:18:22,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 870 flow [2024-06-27 19:18:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:22,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:18:22,818 INFO L175 Difference]: Start difference. First operand has 95 places, 77 transitions, 611 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:22,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 870 flow [2024-06-27 19:18:22,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 840 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:22,826 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 658 flow [2024-06-27 19:18:22,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-06-27 19:18:22,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-27 19:18:22,826 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 658 flow [2024-06-27 19:18:22,827 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 19:18:22,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:22,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:22,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:18:22,827 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 19:18:22,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash 37985642, now seen corresponding path program 2 times [2024-06-27 19:18:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506338370] [2024-06-27 19:18:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:23,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:23,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506338370] [2024-06-27 19:18:23,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506338370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:23,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:23,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:23,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261247252] [2024-06-27 19:18:23,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:23,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:23,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:23,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:23,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:23,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 658 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 19:18:23,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:23,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:23,946 INFO L124 PetriNetUnfolderBase]: 299/527 cut-off events. [2024-06-27 19:18:23,947 INFO L125 PetriNetUnfolderBase]: For 10278/10278 co-relation queries the response was YES. [2024-06-27 19:18:23,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2959 conditions, 527 events. 299/527 cut-off events. For 10278/10278 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1990 event pairs, 54 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 2911. Up to 407 conditions per place. [2024-06-27 19:18:23,950 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 31 changer transitions 0/103 dead transitions. [2024-06-27 19:18:23,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 103 transitions, 999 flow [2024-06-27 19:18:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 19:18:23,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:18:23,953 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 658 flow. Second operand 8 states and 96 transitions. [2024-06-27 19:18:23,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 103 transitions, 999 flow [2024-06-27 19:18:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 964 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:23,962 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 735 flow [2024-06-27 19:18:23,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=735, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-06-27 19:18:23,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-27 19:18:23,963 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 735 flow [2024-06-27 19:18:23,963 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 19:18:23,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:23,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:23,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:18:23,964 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 19:18:23,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1456532221, now seen corresponding path program 1 times [2024-06-27 19:18:23,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:23,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396342633] [2024-06-27 19:18:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396342633] [2024-06-27 19:18:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396342633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:24,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:24,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550823645] [2024-06-27 19:18:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:24,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:24,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:24,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 735 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 19:18:24,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:24,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:24,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:25,067 INFO L124 PetriNetUnfolderBase]: 302/532 cut-off events. [2024-06-27 19:18:25,067 INFO L125 PetriNetUnfolderBase]: For 11260/11260 co-relation queries the response was YES. [2024-06-27 19:18:25,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 532 events. 302/532 cut-off events. For 11260/11260 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2022 event pairs, 74 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 3048. Up to 469 conditions per place. [2024-06-27 19:18:25,070 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2024-06-27 19:18:25,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 992 flow [2024-06-27 19:18:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 19:18:25,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-27 19:18:25,072 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 735 flow. Second operand 8 states and 89 transitions. [2024-06-27 19:18:25,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 992 flow [2024-06-27 19:18:25,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 947 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:25,082 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 770 flow [2024-06-27 19:18:25,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2024-06-27 19:18:25,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-27 19:18:25,083 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 770 flow [2024-06-27 19:18:25,083 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 19:18:25,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:25,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:18:25,083 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 19:18:25,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1103911044, now seen corresponding path program 3 times [2024-06-27 19:18:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914301513] [2024-06-27 19:18:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:25,724 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 19:18:25,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914301513] [2024-06-27 19:18:25,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914301513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:25,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175741788] [2024-06-27 19:18:25,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:25,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:25,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 770 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 19:18:25,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:25,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:25,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:26,130 INFO L124 PetriNetUnfolderBase]: 303/534 cut-off events. [2024-06-27 19:18:26,131 INFO L125 PetriNetUnfolderBase]: For 12044/12044 co-relation queries the response was YES. [2024-06-27 19:18:26,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 534 events. 303/534 cut-off events. For 12044/12044 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2025 event pairs, 55 based on Foata normal form. 2/535 useless extension candidates. Maximal degree in co-relation 3103. Up to 444 conditions per place. [2024-06-27 19:18:26,134 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-27 19:18:26,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 1039 flow [2024-06-27 19:18:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 19:18:26,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-27 19:18:26,135 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 770 flow. Second operand 8 states and 93 transitions. [2024-06-27 19:18:26,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 1039 flow [2024-06-27 19:18:26,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 989 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:26,148 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 799 flow [2024-06-27 19:18:26,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=799, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-27 19:18:26,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-27 19:18:26,149 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 799 flow [2024-06-27 19:18:26,149 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 19:18:26,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:26,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:26,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:18:26,150 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 19:18:26,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash -959805188, now seen corresponding path program 1 times [2024-06-27 19:18:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984104538] [2024-06-27 19:18:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:27,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:27,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984104538] [2024-06-27 19:18:27,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984104538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:27,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:27,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353742828] [2024-06-27 19:18:27,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:27,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:27,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:27,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:27,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 799 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 19:18:27,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:27,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:27,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:27,545 INFO L124 PetriNetUnfolderBase]: 309/545 cut-off events. [2024-06-27 19:18:27,546 INFO L125 PetriNetUnfolderBase]: For 13109/13109 co-relation queries the response was YES. [2024-06-27 19:18:27,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 545 events. 309/545 cut-off events. For 13109/13109 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2090 event pairs, 78 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3198. Up to 479 conditions per place. [2024-06-27 19:18:27,549 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 23 changer transitions 0/106 dead transitions. [2024-06-27 19:18:27,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 1070 flow [2024-06-27 19:18:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:18:27,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-27 19:18:27,551 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 799 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:18:27,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 1070 flow [2024-06-27 19:18:27,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 1011 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:27,564 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 811 flow [2024-06-27 19:18:27,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=110, PETRI_TRANSITIONS=92} [2024-06-27 19:18:27,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-27 19:18:27,565 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 811 flow [2024-06-27 19:18:27,565 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 19:18:27,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:27,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:18:27,566 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 19:18:27,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash -428481254, now seen corresponding path program 4 times [2024-06-27 19:18:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:27,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718644187] [2024-06-27 19:18:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:28,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:28,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718644187] [2024-06-27 19:18:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718644187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496605092] [2024-06-27 19:18:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:28,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:28,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:28,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 811 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 19:18:28,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:28,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:28,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:28,563 INFO L124 PetriNetUnfolderBase]: 315/555 cut-off events. [2024-06-27 19:18:28,563 INFO L125 PetriNetUnfolderBase]: For 14031/14033 co-relation queries the response was YES. [2024-06-27 19:18:28,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 555 events. 315/555 cut-off events. For 14031/14033 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2138 event pairs, 67 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3301. Up to 460 conditions per place. [2024-06-27 19:18:28,567 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-06-27 19:18:28,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 106 transitions, 1081 flow [2024-06-27 19:18:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:28,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:18:28,569 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 811 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:28,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 106 transitions, 1081 flow [2024-06-27 19:18:28,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 1026 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:28,586 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 841 flow [2024-06-27 19:18:28,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-27 19:18:28,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-27 19:18:28,592 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 841 flow [2024-06-27 19:18:28,592 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 19:18:28,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:28,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:28,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:18:28,592 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 19:18:28,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1997226410, now seen corresponding path program 5 times [2024-06-27 19:18:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092030278] [2024-06-27 19:18:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:29,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092030278] [2024-06-27 19:18:29,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092030278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:29,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:29,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227592166] [2024-06-27 19:18:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:29,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:29,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 841 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 19:18:29,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:29,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:29,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:29,644 INFO L124 PetriNetUnfolderBase]: 321/565 cut-off events. [2024-06-27 19:18:29,645 INFO L125 PetriNetUnfolderBase]: For 15247/15249 co-relation queries the response was YES. [2024-06-27 19:18:29,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 565 events. 321/565 cut-off events. For 15247/15249 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2180 event pairs, 70 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 3431. Up to 474 conditions per place. [2024-06-27 19:18:29,648 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 24 changer transitions 0/108 dead transitions. [2024-06-27 19:18:29,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 108 transitions, 1117 flow [2024-06-27 19:18:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 19:18:29,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-27 19:18:29,649 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 841 flow. Second operand 8 states and 91 transitions. [2024-06-27 19:18:29,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 108 transitions, 1117 flow [2024-06-27 19:18:29,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 1048 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:29,667 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 857 flow [2024-06-27 19:18:29,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-06-27 19:18:29,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-27 19:18:29,668 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 857 flow [2024-06-27 19:18:29,668 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 19:18:29,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:29,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:29,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:18:29,669 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 19:18:29,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2047126242, now seen corresponding path program 6 times [2024-06-27 19:18:29,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:29,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733943623] [2024-06-27 19:18:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733943623] [2024-06-27 19:18:30,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733943623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:30,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:30,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873864656] [2024-06-27 19:18:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:30,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:30,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:30,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 857 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 19:18:30,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:30,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:30,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:30,713 INFO L124 PetriNetUnfolderBase]: 327/575 cut-off events. [2024-06-27 19:18:30,713 INFO L125 PetriNetUnfolderBase]: For 16481/16483 co-relation queries the response was YES. [2024-06-27 19:18:30,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 575 events. 327/575 cut-off events. For 16481/16483 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2235 event pairs, 68 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3535. Up to 463 conditions per place. [2024-06-27 19:18:30,717 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-06-27 19:18:30,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 1155 flow [2024-06-27 19:18:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 19:18:30,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-27 19:18:30,718 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 857 flow. Second operand 8 states and 95 transitions. [2024-06-27 19:18:30,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 1155 flow [2024-06-27 19:18:30,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 1086 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:30,733 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 894 flow [2024-06-27 19:18:30,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=894, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-27 19:18:30,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-27 19:18:30,734 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 894 flow [2024-06-27 19:18:30,734 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 19:18:30,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:30,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:30,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:18:30,735 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 19:18:30,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2047126025, now seen corresponding path program 2 times [2024-06-27 19:18:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:30,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968573975] [2024-06-27 19:18:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:30,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968573975] [2024-06-27 19:18:31,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968573975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:31,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:31,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:31,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346090615] [2024-06-27 19:18:31,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:31,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:31,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 894 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 19:18:31,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:31,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:31,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:31,843 INFO L124 PetriNetUnfolderBase]: 325/572 cut-off events. [2024-06-27 19:18:31,843 INFO L125 PetriNetUnfolderBase]: For 16816/16818 co-relation queries the response was YES. [2024-06-27 19:18:31,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 572 events. 325/572 cut-off events. For 16816/16818 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2215 event pairs, 83 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 3557. Up to 508 conditions per place. [2024-06-27 19:18:31,846 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2024-06-27 19:18:31,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 1132 flow [2024-06-27 19:18:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:18:31,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-27 19:18:31,848 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 894 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:18:31,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 1132 flow [2024-06-27 19:18:31,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 107 transitions, 1046 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:31,865 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 862 flow [2024-06-27 19:18:31,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-06-27 19:18:31,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-27 19:18:31,865 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 862 flow [2024-06-27 19:18:31,865 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 19:18:31,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:31,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:31,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:18:31,866 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 19:18:31,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1780892786, now seen corresponding path program 2 times [2024-06-27 19:18:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:31,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407617334] [2024-06-27 19:18:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407617334] [2024-06-27 19:18:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407617334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940815088] [2024-06-27 19:18:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:32,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:32,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 862 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 19:18:32,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:32,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:32,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:32,975 INFO L124 PetriNetUnfolderBase]: 347/607 cut-off events. [2024-06-27 19:18:32,976 INFO L125 PetriNetUnfolderBase]: For 18576/18576 co-relation queries the response was YES. [2024-06-27 19:18:32,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 607 events. 347/607 cut-off events. For 18576/18576 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2374 event pairs, 77 based on Foata normal form. 4/610 useless extension candidates. Maximal degree in co-relation 3678. Up to 561 conditions per place. [2024-06-27 19:18:32,980 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2024-06-27 19:18:32,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 116 transitions, 1229 flow [2024-06-27 19:18:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 19:18:32,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-27 19:18:32,982 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 862 flow. Second operand 10 states and 101 transitions. [2024-06-27 19:18:32,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 116 transitions, 1229 flow [2024-06-27 19:18:33,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 1151 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:33,002 INFO L231 Difference]: Finished difference. Result has 120 places, 103 transitions, 879 flow [2024-06-27 19:18:33,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=879, PETRI_PLACES=120, PETRI_TRANSITIONS=103} [2024-06-27 19:18:33,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-27 19:18:33,003 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 103 transitions, 879 flow [2024-06-27 19:18:33,003 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 19:18:33,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:33,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:33,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:18:33,004 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 19:18:33,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2046916496, now seen corresponding path program 3 times [2024-06-27 19:18:33,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:33,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068925319] [2024-06-27 19:18:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:33,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:33,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068925319] [2024-06-27 19:18:33,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068925319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:33,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:33,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:33,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876725030] [2024-06-27 19:18:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:33,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:33,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:33,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 103 transitions, 879 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 19:18:33,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:33,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:33,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:34,387 INFO L124 PetriNetUnfolderBase]: 353/618 cut-off events. [2024-06-27 19:18:34,387 INFO L125 PetriNetUnfolderBase]: For 17730/17732 co-relation queries the response was YES. [2024-06-27 19:18:34,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 618 events. 353/618 cut-off events. For 17730/17732 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2456 event pairs, 86 based on Foata normal form. 2/619 useless extension candidates. Maximal degree in co-relation 3772. Up to 552 conditions per place. [2024-06-27 19:18:34,390 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2024-06-27 19:18:34,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 116 transitions, 1167 flow [2024-06-27 19:18:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:18:34,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-27 19:18:34,391 INFO L175 Difference]: Start difference. First operand has 120 places, 103 transitions, 879 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:18:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 116 transitions, 1167 flow [2024-06-27 19:18:34,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 116 transitions, 1126 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:34,409 INFO L231 Difference]: Finished difference. Result has 123 places, 105 transitions, 915 flow [2024-06-27 19:18:34,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=915, PETRI_PLACES=123, PETRI_TRANSITIONS=105} [2024-06-27 19:18:34,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 19:18:34,409 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 105 transitions, 915 flow [2024-06-27 19:18:34,409 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 19:18:34,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:34,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:34,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:18:34,410 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 19:18:34,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1781219216, now seen corresponding path program 4 times [2024-06-27 19:18:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:34,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144180456] [2024-06-27 19:18:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:35,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144180456] [2024-06-27 19:18:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144180456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:35,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:35,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168245651] [2024-06-27 19:18:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:35,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:35,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:35,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 105 transitions, 915 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 19:18:35,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:35,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:35,302 INFO L124 PetriNetUnfolderBase]: 371/646 cut-off events. [2024-06-27 19:18:35,302 INFO L125 PetriNetUnfolderBase]: For 19704/19704 co-relation queries the response was YES. [2024-06-27 19:18:35,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 646 events. 371/646 cut-off events. For 19704/19704 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2586 event pairs, 80 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 4078. Up to 573 conditions per place. [2024-06-27 19:18:35,306 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 97 selfloop transitions, 27 changer transitions 0/126 dead transitions. [2024-06-27 19:18:35,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1335 flow [2024-06-27 19:18:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:18:35,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:18:35,307 INFO L175 Difference]: Start difference. First operand has 123 places, 105 transitions, 915 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:18:35,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1335 flow [2024-06-27 19:18:35,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 1274 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:35,328 INFO L231 Difference]: Finished difference. Result has 128 places, 115 transitions, 1031 flow [2024-06-27 19:18:35,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1031, PETRI_PLACES=128, PETRI_TRANSITIONS=115} [2024-06-27 19:18:35,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-27 19:18:35,329 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 115 transitions, 1031 flow [2024-06-27 19:18:35,329 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 19:18:35,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:35,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:35,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:18:35,330 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 19:18:35,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:35,330 INFO L85 PathProgramCache]: Analyzing trace with hash 322147610, now seen corresponding path program 7 times [2024-06-27 19:18:35,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:35,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785558161] [2024-06-27 19:18:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785558161] [2024-06-27 19:18:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785558161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:35,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789604444] [2024-06-27 19:18:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:36,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:36,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 115 transitions, 1031 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 19:18:36,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:36,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:36,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:36,315 INFO L124 PetriNetUnfolderBase]: 367/641 cut-off events. [2024-06-27 19:18:36,315 INFO L125 PetriNetUnfolderBase]: For 20844/20846 co-relation queries the response was YES. [2024-06-27 19:18:36,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 641 events. 367/641 cut-off events. For 20844/20846 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2590 event pairs, 61 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4206. Up to 477 conditions per place. [2024-06-27 19:18:36,319 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 86 selfloop transitions, 44 changer transitions 0/132 dead transitions. [2024-06-27 19:18:36,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 132 transitions, 1443 flow [2024-06-27 19:18:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 19:18:36,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-27 19:18:36,329 INFO L175 Difference]: Start difference. First operand has 128 places, 115 transitions, 1031 flow. Second operand 8 states and 95 transitions. [2024-06-27 19:18:36,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 132 transitions, 1443 flow [2024-06-27 19:18:36,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 1403 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:36,355 INFO L231 Difference]: Finished difference. Result has 133 places, 117 transitions, 1120 flow [2024-06-27 19:18:36,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1120, PETRI_PLACES=133, PETRI_TRANSITIONS=117} [2024-06-27 19:18:36,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-27 19:18:36,356 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 117 transitions, 1120 flow [2024-06-27 19:18:36,356 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 19:18:36,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:36,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:36,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:18:36,357 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 19:18:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2004591576, now seen corresponding path program 5 times [2024-06-27 19:18:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907717337] [2024-06-27 19:18:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:37,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:37,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907717337] [2024-06-27 19:18:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907717337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:37,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:37,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451407821] [2024-06-27 19:18:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:37,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:37,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:37,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:37,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:37,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 1120 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 19:18:37,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:37,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:37,869 INFO L124 PetriNetUnfolderBase]: 374/653 cut-off events. [2024-06-27 19:18:37,869 INFO L125 PetriNetUnfolderBase]: For 22865/22867 co-relation queries the response was YES. [2024-06-27 19:18:37,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 653 events. 374/653 cut-off events. For 22865/22867 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2646 event pairs, 82 based on Foata normal form. 4/656 useless extension candidates. Maximal degree in co-relation 4357. Up to 437 conditions per place. [2024-06-27 19:18:37,875 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 49 changer transitions 0/136 dead transitions. [2024-06-27 19:18:37,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 1592 flow [2024-06-27 19:18:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:18:37,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:18:37,877 INFO L175 Difference]: Start difference. First operand has 133 places, 117 transitions, 1120 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:18:37,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 1592 flow [2024-06-27 19:18:37,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 136 transitions, 1479 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:37,906 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 1170 flow [2024-06-27 19:18:37,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2024-06-27 19:18:37,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-27 19:18:37,907 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 1170 flow [2024-06-27 19:18:37,907 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 19:18:37,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:37,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:37,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:18:37,908 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 19:18:37,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:37,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1780880882, now seen corresponding path program 1 times [2024-06-27 19:18:37,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:37,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307224300] [2024-06-27 19:18:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307224300] [2024-06-27 19:18:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307224300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:39,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672591789] [2024-06-27 19:18:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:39,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:39,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:39,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:40,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:40,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 121 transitions, 1170 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 19:18:40,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:40,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:40,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:40,314 INFO L124 PetriNetUnfolderBase]: 371/647 cut-off events. [2024-06-27 19:18:40,314 INFO L125 PetriNetUnfolderBase]: For 22338/22338 co-relation queries the response was YES. [2024-06-27 19:18:40,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4370 conditions, 647 events. 371/647 cut-off events. For 22338/22338 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2601 event pairs, 83 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4302. Up to 618 conditions per place. [2024-06-27 19:18:40,318 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-06-27 19:18:40,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 131 transitions, 1450 flow [2024-06-27 19:18:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-27 19:18:40,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-27 19:18:40,333 INFO L175 Difference]: Start difference. First operand has 136 places, 121 transitions, 1170 flow. Second operand 10 states and 95 transitions. [2024-06-27 19:18:40,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 131 transitions, 1450 flow [2024-06-27 19:18:40,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 1385 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:40,359 INFO L231 Difference]: Finished difference. Result has 141 places, 121 transitions, 1141 flow [2024-06-27 19:18:40,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1141, PETRI_PLACES=141, PETRI_TRANSITIONS=121} [2024-06-27 19:18:40,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-27 19:18:40,360 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 121 transitions, 1141 flow [2024-06-27 19:18:40,360 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 19:18:40,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:40,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:40,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:18:40,361 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 19:18:40,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1059229698, now seen corresponding path program 1 times [2024-06-27 19:18:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:40,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297483597] [2024-06-27 19:18:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:40,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:41,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297483597] [2024-06-27 19:18:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297483597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:41,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134125037] [2024-06-27 19:18:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:41,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:41,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:41,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 121 transitions, 1141 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 19:18:41,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:41,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:41,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:41,738 INFO L124 PetriNetUnfolderBase]: 412/724 cut-off events. [2024-06-27 19:18:41,738 INFO L125 PetriNetUnfolderBase]: For 24963/24963 co-relation queries the response was YES. [2024-06-27 19:18:41,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 724 events. 412/724 cut-off events. For 24963/24963 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3095 event pairs, 78 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4665. Up to 623 conditions per place. [2024-06-27 19:18:41,743 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 24 changer transitions 0/155 dead transitions. [2024-06-27 19:18:41,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 155 transitions, 1699 flow [2024-06-27 19:18:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:18:41,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:18:41,753 INFO L175 Difference]: Start difference. First operand has 141 places, 121 transitions, 1141 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:18:41,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 155 transitions, 1699 flow [2024-06-27 19:18:41,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 155 transitions, 1654 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:18:41,785 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 1301 flow [2024-06-27 19:18:41,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1301, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2024-06-27 19:18:41,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-27 19:18:41,786 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 1301 flow [2024-06-27 19:18:41,786 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 19:18:41,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:41,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:41,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:18:41,786 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 19:18:41,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 23085420, now seen corresponding path program 2 times [2024-06-27 19:18:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:41,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000497997] [2024-06-27 19:18:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:41,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:42,580 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 19:18:42,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:42,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000497997] [2024-06-27 19:18:42,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000497997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:42,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:42,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:42,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109338315] [2024-06-27 19:18:42,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:42,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:42,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:42,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 1301 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 19:18:42,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:42,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:42,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:42,953 INFO L124 PetriNetUnfolderBase]: 413/727 cut-off events. [2024-06-27 19:18:42,954 INFO L125 PetriNetUnfolderBase]: For 26503/26503 co-relation queries the response was YES. [2024-06-27 19:18:42,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 727 events. 413/727 cut-off events. For 26503/26503 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3127 event pairs, 74 based on Foata normal form. 4/730 useless extension candidates. Maximal degree in co-relation 4717. Up to 630 conditions per place. [2024-06-27 19:18:42,958 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 120 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2024-06-27 19:18:42,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 1641 flow [2024-06-27 19:18:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 19:18:42,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-27 19:18:42,959 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 1301 flow. Second operand 8 states and 89 transitions. [2024-06-27 19:18:42,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 1641 flow [2024-06-27 19:18:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 1621 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 19:18:42,993 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1357 flow [2024-06-27 19:18:42,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1357, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2024-06-27 19:18:42,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-27 19:18:42,993 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1357 flow [2024-06-27 19:18:42,994 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 19:18:42,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:42,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:42,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:18:42,994 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 19:18:42,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash 23205700, now seen corresponding path program 1 times [2024-06-27 19:18:42,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:42,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89859819] [2024-06-27 19:18:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:42,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89859819] [2024-06-27 19:18:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89859819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:43,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524630668] [2024-06-27 19:18:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:43,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:43,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1357 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 19:18:43,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:43,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:43,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:44,273 INFO L124 PetriNetUnfolderBase]: 425/747 cut-off events. [2024-06-27 19:18:44,273 INFO L125 PetriNetUnfolderBase]: For 26711/26711 co-relation queries the response was YES. [2024-06-27 19:18:44,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 747 events. 425/747 cut-off events. For 26711/26711 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3227 event pairs, 71 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 4885. Up to 662 conditions per place. [2024-06-27 19:18:44,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 24 changer transitions 0/158 dead transitions. [2024-06-27 19:18:44,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 1771 flow [2024-06-27 19:18:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:18:44,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:18:44,279 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1357 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:18:44,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 1771 flow [2024-06-27 19:18:44,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 158 transitions, 1715 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:44,315 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 1413 flow [2024-06-27 19:18:44,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1413, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2024-06-27 19:18:44,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-27 19:18:44,315 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 1413 flow [2024-06-27 19:18:44,315 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 19:18:44,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:44,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:18:44,316 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 19:18:44,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2087489078, now seen corresponding path program 1 times [2024-06-27 19:18:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388649901] [2024-06-27 19:18:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:45,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388649901] [2024-06-27 19:18:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388649901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:45,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:45,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36541790] [2024-06-27 19:18:45,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:45,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:45,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:45,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:45,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 1413 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 19:18:45,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:45,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:45,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:45,563 INFO L124 PetriNetUnfolderBase]: 423/744 cut-off events. [2024-06-27 19:18:45,563 INFO L125 PetriNetUnfolderBase]: For 26640/26640 co-relation queries the response was YES. [2024-06-27 19:18:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 744 events. 423/744 cut-off events. For 26640/26640 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3218 event pairs, 65 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 4905. Up to 642 conditions per place. [2024-06-27 19:18:45,568 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 121 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-06-27 19:18:45,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 154 transitions, 1753 flow [2024-06-27 19:18:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:45,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:18:45,569 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 1413 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:45,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 154 transitions, 1753 flow [2024-06-27 19:18:45,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1687 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:45,610 INFO L231 Difference]: Finished difference. Result has 162 places, 141 transitions, 1421 flow [2024-06-27 19:18:45,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1421, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2024-06-27 19:18:45,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-27 19:18:45,610 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 1421 flow [2024-06-27 19:18:45,611 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 19:18:45,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:45,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:18:45,611 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 19:18:45,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1176961122, now seen corresponding path program 2 times [2024-06-27 19:18:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680185385] [2024-06-27 19:18:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:46,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:46,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680185385] [2024-06-27 19:18:46,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680185385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:46,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:46,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517189143] [2024-06-27 19:18:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:46,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:46,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 1421 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 19:18:46,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:46,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:46,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:46,851 INFO L124 PetriNetUnfolderBase]: 429/754 cut-off events. [2024-06-27 19:18:46,851 INFO L125 PetriNetUnfolderBase]: For 29069/29069 co-relation queries the response was YES. [2024-06-27 19:18:46,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 754 events. 429/754 cut-off events. For 29069/29069 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3284 event pairs, 62 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 5009. Up to 586 conditions per place. [2024-06-27 19:18:46,856 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 110 selfloop transitions, 47 changer transitions 0/159 dead transitions. [2024-06-27 19:18:46,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 159 transitions, 1819 flow [2024-06-27 19:18:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 19:18:46,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 19:18:46,858 INFO L175 Difference]: Start difference. First operand has 162 places, 141 transitions, 1421 flow. Second operand 9 states and 104 transitions. [2024-06-27 19:18:46,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 159 transitions, 1819 flow [2024-06-27 19:18:46,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 159 transitions, 1740 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:46,904 INFO L231 Difference]: Finished difference. Result has 164 places, 143 transitions, 1475 flow [2024-06-27 19:18:46,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=164, PETRI_TRANSITIONS=143} [2024-06-27 19:18:46,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-27 19:18:46,904 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 1475 flow [2024-06-27 19:18:46,904 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 19:18:46,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:46,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:46,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:18:46,905 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 19:18:46,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash 138676608, now seen corresponding path program 1 times [2024-06-27 19:18:46,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807758463] [2024-06-27 19:18:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:46,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:47,925 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 19:18:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807758463] [2024-06-27 19:18:47,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807758463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:47,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:47,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995396535] [2024-06-27 19:18:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:47,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:47,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:48,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 143 transitions, 1475 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 19:18:48,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:48,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:48,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:48,321 INFO L124 PetriNetUnfolderBase]: 432/759 cut-off events. [2024-06-27 19:18:48,321 INFO L125 PetriNetUnfolderBase]: For 30131/30131 co-relation queries the response was YES. [2024-06-27 19:18:48,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 759 events. 432/759 cut-off events. For 30131/30131 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3307 event pairs, 82 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 5142. Up to 672 conditions per place. [2024-06-27 19:18:48,326 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 31 changer transitions 0/158 dead transitions. [2024-06-27 19:18:48,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 158 transitions, 1873 flow [2024-06-27 19:18:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:18:48,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:18:48,327 INFO L175 Difference]: Start difference. First operand has 164 places, 143 transitions, 1475 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:18:48,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 158 transitions, 1873 flow [2024-06-27 19:18:48,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 158 transitions, 1756 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:48,368 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1464 flow [2024-06-27 19:18:48,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-27 19:18:48,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-27 19:18:48,369 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1464 flow [2024-06-27 19:18:48,369 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 19:18:48,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:48,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:48,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:18:48,369 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 19:18:48,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1177377828, now seen corresponding path program 3 times [2024-06-27 19:18:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743951436] [2024-06-27 19:18:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:49,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:49,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743951436] [2024-06-27 19:18:49,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743951436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:49,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:49,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794056054] [2024-06-27 19:18:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:49,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:49,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:49,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:49,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:49,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1464 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 19:18:49,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:49,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:49,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:49,640 INFO L124 PetriNetUnfolderBase]: 436/767 cut-off events. [2024-06-27 19:18:49,640 INFO L125 PetriNetUnfolderBase]: For 32214/32214 co-relation queries the response was YES. [2024-06-27 19:18:49,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 767 events. 436/767 cut-off events. For 32214/32214 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3357 event pairs, 67 based on Foata normal form. 2/768 useless extension candidates. Maximal degree in co-relation 5176. Up to 647 conditions per place. [2024-06-27 19:18:49,645 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 123 selfloop transitions, 33 changer transitions 0/158 dead transitions. [2024-06-27 19:18:49,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 158 transitions, 1822 flow [2024-06-27 19:18:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:18:49,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:18:49,646 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1464 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:18:49,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 158 transitions, 1822 flow [2024-06-27 19:18:49,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 1746 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:49,697 INFO L231 Difference]: Finished difference. Result has 167 places, 146 transitions, 1474 flow [2024-06-27 19:18:49,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1474, PETRI_PLACES=167, PETRI_TRANSITIONS=146} [2024-06-27 19:18:49,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-27 19:18:49,697 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 146 transitions, 1474 flow [2024-06-27 19:18:49,697 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 19:18:49,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:49,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:49,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:18:49,698 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 19:18:49,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:49,698 INFO L85 PathProgramCache]: Analyzing trace with hash 138496870, now seen corresponding path program 3 times [2024-06-27 19:18:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:49,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002779983] [2024-06-27 19:18:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:49,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:50,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:50,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002779983] [2024-06-27 19:18:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002779983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768461168] [2024-06-27 19:18:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:50,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:50,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:50,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 146 transitions, 1474 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 19:18:50,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:50,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:50,821 INFO L124 PetriNetUnfolderBase]: 442/777 cut-off events. [2024-06-27 19:18:50,821 INFO L125 PetriNetUnfolderBase]: For 33924/33924 co-relation queries the response was YES. [2024-06-27 19:18:50,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5367 conditions, 777 events. 442/777 cut-off events. For 33924/33924 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3423 event pairs, 67 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 5282. Up to 647 conditions per place. [2024-06-27 19:18:50,826 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 36 changer transitions 0/162 dead transitions. [2024-06-27 19:18:50,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1868 flow [2024-06-27 19:18:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:18:50,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:18:50,827 INFO L175 Difference]: Start difference. First operand has 167 places, 146 transitions, 1474 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:18:50,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1868 flow [2024-06-27 19:18:50,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 162 transitions, 1792 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:50,892 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 1513 flow [2024-06-27 19:18:50,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2024-06-27 19:18:50,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-27 19:18:50,893 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 1513 flow [2024-06-27 19:18:50,893 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 19:18:50,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:50,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:50,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:18:50,894 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 19:18:50,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:50,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1177562278, now seen corresponding path program 4 times [2024-06-27 19:18:50,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861414788] [2024-06-27 19:18:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:50,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:51,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:51,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861414788] [2024-06-27 19:18:51,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861414788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:51,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:51,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:51,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295192454] [2024-06-27 19:18:51,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:51,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:51,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:51,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:51,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:51,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 1513 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 19:18:51,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:51,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:51,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:52,194 INFO L124 PetriNetUnfolderBase]: 458/803 cut-off events. [2024-06-27 19:18:52,194 INFO L125 PetriNetUnfolderBase]: For 37560/37560 co-relation queries the response was YES. [2024-06-27 19:18:52,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5679 conditions, 803 events. 458/803 cut-off events. For 37560/37560 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3559 event pairs, 61 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 5593. Up to 587 conditions per place. [2024-06-27 19:18:52,199 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 57 changer transitions 0/170 dead transitions. [2024-06-27 19:18:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 170 transitions, 2075 flow [2024-06-27 19:18:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:18:52,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-27 19:18:52,200 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 1513 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:18:52,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 170 transitions, 2075 flow [2024-06-27 19:18:52,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 1976 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:52,256 INFO L231 Difference]: Finished difference. Result has 172 places, 152 transitions, 1614 flow [2024-06-27 19:18:52,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1614, PETRI_PLACES=172, PETRI_TRANSITIONS=152} [2024-06-27 19:18:52,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-27 19:18:52,256 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 152 transitions, 1614 flow [2024-06-27 19:18:52,256 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 19:18:52,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:52,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:52,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:18:52,256 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 19:18:52,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1349697090, now seen corresponding path program 1 times [2024-06-27 19:18:52,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:52,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443089999] [2024-06-27 19:18:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:52,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:53,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443089999] [2024-06-27 19:18:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443089999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:53,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411805640] [2024-06-27 19:18:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:53,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:53,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:53,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 152 transitions, 1614 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 19:18:53,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:53,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:53,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:53,846 INFO L124 PetriNetUnfolderBase]: 464/813 cut-off events. [2024-06-27 19:18:53,846 INFO L125 PetriNetUnfolderBase]: For 39428/39428 co-relation queries the response was YES. [2024-06-27 19:18:53,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 813 events. 464/813 cut-off events. For 39428/39428 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3625 event pairs, 87 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 5755. Up to 727 conditions per place. [2024-06-27 19:18:53,851 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-06-27 19:18:53,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 170 transitions, 2058 flow [2024-06-27 19:18:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:18:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:18:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:18:53,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:18:53,852 INFO L175 Difference]: Start difference. First operand has 172 places, 152 transitions, 1614 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:18:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 170 transitions, 2058 flow [2024-06-27 19:18:53,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1960 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:53,909 INFO L231 Difference]: Finished difference. Result has 177 places, 154 transitions, 1613 flow [2024-06-27 19:18:53,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=177, PETRI_TRANSITIONS=154} [2024-06-27 19:18:53,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-27 19:18:53,910 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 154 transitions, 1613 flow [2024-06-27 19:18:53,910 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 19:18:53,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:53,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:18:53,910 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 19:18:53,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1333492928, now seen corresponding path program 4 times [2024-06-27 19:18:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560397232] [2024-06-27 19:18:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560397232] [2024-06-27 19:18:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560397232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:54,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:54,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:54,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444125543] [2024-06-27 19:18:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:54,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:54,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:54,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 154 transitions, 1613 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 19:18:54,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:54,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:55,130 INFO L124 PetriNetUnfolderBase]: 468/822 cut-off events. [2024-06-27 19:18:55,130 INFO L125 PetriNetUnfolderBase]: For 41022/41024 co-relation queries the response was YES. [2024-06-27 19:18:55,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 822 events. 468/822 cut-off events. For 41022/41024 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3676 event pairs, 82 based on Foata normal form. 2/823 useless extension candidates. Maximal degree in co-relation 5830. Up to 701 conditions per place. [2024-06-27 19:18:55,135 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 132 selfloop transitions, 32 changer transitions 0/166 dead transitions. [2024-06-27 19:18:55,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 166 transitions, 1987 flow [2024-06-27 19:18:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:55,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:18:55,135 INFO L175 Difference]: Start difference. First operand has 177 places, 154 transitions, 1613 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:55,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 166 transitions, 1987 flow [2024-06-27 19:18:55,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 166 transitions, 1910 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:18:55,198 INFO L231 Difference]: Finished difference. Result has 177 places, 155 transitions, 1622 flow [2024-06-27 19:18:55,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1622, PETRI_PLACES=177, PETRI_TRANSITIONS=155} [2024-06-27 19:18:55,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-27 19:18:55,198 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 155 transitions, 1622 flow [2024-06-27 19:18:55,198 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 19:18:55,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:55,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:55,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:18:55,199 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 19:18:55,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash 331440642, now seen corresponding path program 5 times [2024-06-27 19:18:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:55,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493447790] [2024-06-27 19:18:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:55,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493447790] [2024-06-27 19:18:55,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493447790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:55,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:55,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378973313] [2024-06-27 19:18:55,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:55,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:55,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:55,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:56,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:56,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 155 transitions, 1622 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 19:18:56,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:56,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:56,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:56,429 INFO L124 PetriNetUnfolderBase]: 494/863 cut-off events. [2024-06-27 19:18:56,430 INFO L125 PetriNetUnfolderBase]: For 47430/47430 co-relation queries the response was YES. [2024-06-27 19:18:56,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 863 events. 494/863 cut-off events. For 47430/47430 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3903 event pairs, 70 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 6338. Up to 526 conditions per place. [2024-06-27 19:18:56,435 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 69 changer transitions 0/184 dead transitions. [2024-06-27 19:18:56,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 2508 flow [2024-06-27 19:18:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:18:56,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:18:56,436 INFO L175 Difference]: Start difference. First operand has 177 places, 155 transitions, 1622 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:18:56,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 2508 flow [2024-06-27 19:18:56,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 184 transitions, 2432 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:56,499 INFO L231 Difference]: Finished difference. Result has 180 places, 163 transitions, 1861 flow [2024-06-27 19:18:56,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1861, PETRI_PLACES=180, PETRI_TRANSITIONS=163} [2024-06-27 19:18:56,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-27 19:18:56,499 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 163 transitions, 1861 flow [2024-06-27 19:18:56,499 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 19:18:56,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:56,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:56,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:18:56,500 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 19:18:56,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 963423824, now seen corresponding path program 6 times [2024-06-27 19:18:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514964810] [2024-06-27 19:18:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:57,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:57,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514964810] [2024-06-27 19:18:57,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514964810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:57,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:57,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:57,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739610735] [2024-06-27 19:18:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:57,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:57,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:57,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:57,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 163 transitions, 1861 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 19:18:57,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:57,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:57,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:57,552 INFO L124 PetriNetUnfolderBase]: 500/873 cut-off events. [2024-06-27 19:18:57,553 INFO L125 PetriNetUnfolderBase]: For 49929/49929 co-relation queries the response was YES. [2024-06-27 19:18:57,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 873 events. 500/873 cut-off events. For 49929/49929 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3964 event pairs, 85 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 6570. Up to 743 conditions per place. [2024-06-27 19:18:57,560 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 38 changer transitions 0/180 dead transitions. [2024-06-27 19:18:57,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 180 transitions, 2312 flow [2024-06-27 19:18:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:18:57,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:18:57,561 INFO L175 Difference]: Start difference. First operand has 180 places, 163 transitions, 1861 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:18:57,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 180 transitions, 2312 flow [2024-06-27 19:18:57,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 180 transitions, 2213 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:57,639 INFO L231 Difference]: Finished difference. Result has 186 places, 165 transitions, 1893 flow [2024-06-27 19:18:57,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1893, PETRI_PLACES=186, PETRI_TRANSITIONS=165} [2024-06-27 19:18:57,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-27 19:18:57,640 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 165 transitions, 1893 flow [2024-06-27 19:18:57,640 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 19:18:57,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:57,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:18:57,640 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 19:18:57,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1396642184, now seen corresponding path program 7 times [2024-06-27 19:18:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101791575] [2024-06-27 19:18:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:58,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:58,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101791575] [2024-06-27 19:18:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101791575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:58,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:58,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919551897] [2024-06-27 19:18:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:58,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:58,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:58,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 165 transitions, 1893 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 19:18:58,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:58,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:58,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:58,823 INFO L124 PetriNetUnfolderBase]: 496/867 cut-off events. [2024-06-27 19:18:58,823 INFO L125 PetriNetUnfolderBase]: For 49176/49176 co-relation queries the response was YES. [2024-06-27 19:18:58,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6555 conditions, 867 events. 496/867 cut-off events. For 49176/49176 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3953 event pairs, 64 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 6462. Up to 655 conditions per place. [2024-06-27 19:18:58,830 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 57 changer transitions 0/180 dead transitions. [2024-06-27 19:18:58,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 180 transitions, 2307 flow [2024-06-27 19:18:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:18:58,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 19:18:58,832 INFO L175 Difference]: Start difference. First operand has 186 places, 165 transitions, 1893 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:18:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 180 transitions, 2307 flow [2024-06-27 19:18:58,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 180 transitions, 2170 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:58,908 INFO L231 Difference]: Finished difference. Result has 188 places, 165 transitions, 1875 flow [2024-06-27 19:18:58,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1875, PETRI_PLACES=188, PETRI_TRANSITIONS=165} [2024-06-27 19:18:58,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-27 19:18:58,909 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 165 transitions, 1875 flow [2024-06-27 19:18:58,909 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 19:18:58,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:58,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:58,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:18:58,909 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 19:18:58,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:58,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1692107462, now seen corresponding path program 2 times [2024-06-27 19:18:58,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:58,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111248509] [2024-06-27 19:18:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:58,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:59,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:59,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111248509] [2024-06-27 19:18:59,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111248509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:59,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:59,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:18:59,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285079270] [2024-06-27 19:18:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:59,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:18:59,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:59,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:18:59,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:18:59,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:59,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 165 transitions, 1875 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 19:18:59,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:59,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:59,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:00,091 INFO L124 PetriNetUnfolderBase]: 492/861 cut-off events. [2024-06-27 19:19:00,091 INFO L125 PetriNetUnfolderBase]: For 48499/48499 co-relation queries the response was YES. [2024-06-27 19:19:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 861 events. 492/861 cut-off events. For 48499/48499 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3907 event pairs, 114 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 6357. Up to 816 conditions per place. [2024-06-27 19:19:00,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 21 changer transitions 0/176 dead transitions. [2024-06-27 19:19:00,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 176 transitions, 2259 flow [2024-06-27 19:19:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 19:19:00,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:19:00,098 INFO L175 Difference]: Start difference. First operand has 188 places, 165 transitions, 1875 flow. Second operand 10 states and 100 transitions. [2024-06-27 19:19:00,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 176 transitions, 2259 flow [2024-06-27 19:19:00,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 176 transitions, 2134 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:00,173 INFO L231 Difference]: Finished difference. Result has 190 places, 165 transitions, 1798 flow [2024-06-27 19:19:00,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1798, PETRI_PLACES=190, PETRI_TRANSITIONS=165} [2024-06-27 19:19:00,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-27 19:19:00,174 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 165 transitions, 1798 flow [2024-06-27 19:19:00,174 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 19:19:00,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:00,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:00,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:19:00,175 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 19:19:00,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:00,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2020832282, now seen corresponding path program 8 times [2024-06-27 19:19:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:00,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986297644] [2024-06-27 19:19:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:00,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:00,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986297644] [2024-06-27 19:19:00,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986297644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:00,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:00,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455714539] [2024-06-27 19:19:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:00,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:00,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:00,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:00,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 165 transitions, 1798 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 19:19:00,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:00,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:00,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:01,255 INFO L124 PetriNetUnfolderBase]: 488/855 cut-off events. [2024-06-27 19:19:01,255 INFO L125 PetriNetUnfolderBase]: For 47861/47861 co-relation queries the response was YES. [2024-06-27 19:19:01,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 855 events. 488/855 cut-off events. For 47861/47861 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3877 event pairs, 113 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 6147. Up to 824 conditions per place. [2024-06-27 19:19:01,261 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 16 changer transitions 0/175 dead transitions. [2024-06-27 19:19:01,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 175 transitions, 2172 flow [2024-06-27 19:19:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-27 19:19:01,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:19:01,262 INFO L175 Difference]: Start difference. First operand has 190 places, 165 transitions, 1798 flow. Second operand 9 states and 90 transitions. [2024-06-27 19:19:01,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 175 transitions, 2172 flow [2024-06-27 19:19:01,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 175 transitions, 2099 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:01,350 INFO L231 Difference]: Finished difference. Result has 190 places, 165 transitions, 1762 flow [2024-06-27 19:19:01,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1762, PETRI_PLACES=190, PETRI_TRANSITIONS=165} [2024-06-27 19:19:01,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-27 19:19:01,350 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 165 transitions, 1762 flow [2024-06-27 19:19:01,351 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 19:19:01,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:01,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:01,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:19:01,351 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 19:19:01,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1404923152, now seen corresponding path program 2 times [2024-06-27 19:19:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:01,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369017997] [2024-06-27 19:19:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369017997] [2024-06-27 19:19:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369017997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:02,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287851169] [2024-06-27 19:19:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:02,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:02,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 165 transitions, 1762 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 19:19:02,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:02,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:02,731 INFO L124 PetriNetUnfolderBase]: 486/853 cut-off events. [2024-06-27 19:19:02,731 INFO L125 PetriNetUnfolderBase]: For 47065/47065 co-relation queries the response was YES. [2024-06-27 19:19:02,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 853 events. 486/853 cut-off events. For 47065/47065 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3875 event pairs, 80 based on Foata normal form. 1/853 useless extension candidates. Maximal degree in co-relation 6066. Up to 622 conditions per place. [2024-06-27 19:19:02,737 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 63 changer transitions 0/180 dead transitions. [2024-06-27 19:19:02,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 180 transitions, 2311 flow [2024-06-27 19:19:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:19:02,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:19:02,739 INFO L175 Difference]: Start difference. First operand has 190 places, 165 transitions, 1762 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:19:02,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 180 transitions, 2311 flow [2024-06-27 19:19:02,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 180 transitions, 2269 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:02,841 INFO L231 Difference]: Finished difference. Result has 192 places, 167 transitions, 1887 flow [2024-06-27 19:19:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1887, PETRI_PLACES=192, PETRI_TRANSITIONS=167} [2024-06-27 19:19:02,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-27 19:19:02,841 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 167 transitions, 1887 flow [2024-06-27 19:19:02,841 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 19:19:02,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:02,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:02,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:19:02,842 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 19:19:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1404931832, now seen corresponding path program 3 times [2024-06-27 19:19:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475168369] [2024-06-27 19:19:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475168369] [2024-06-27 19:19:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475168369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:03,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877075436] [2024-06-27 19:19:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:03,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:03,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 167 transitions, 1887 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 19:19:03,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:03,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:03,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:03,960 INFO L124 PetriNetUnfolderBase]: 482/846 cut-off events. [2024-06-27 19:19:03,961 INFO L125 PetriNetUnfolderBase]: For 47513/47513 co-relation queries the response was YES. [2024-06-27 19:19:03,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6198 conditions, 846 events. 482/846 cut-off events. For 47513/47513 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3823 event pairs, 80 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 6101. Up to 619 conditions per place. [2024-06-27 19:19:03,967 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 59 changer transitions 0/180 dead transitions. [2024-06-27 19:19:03,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 180 transitions, 2411 flow [2024-06-27 19:19:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 19:19:03,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 19:19:03,968 INFO L175 Difference]: Start difference. First operand has 192 places, 167 transitions, 1887 flow. Second operand 9 states and 104 transitions. [2024-06-27 19:19:03,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 180 transitions, 2411 flow [2024-06-27 19:19:04,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 180 transitions, 2294 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:04,060 INFO L231 Difference]: Finished difference. Result has 194 places, 167 transitions, 1895 flow [2024-06-27 19:19:04,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1895, PETRI_PLACES=194, PETRI_TRANSITIONS=167} [2024-06-27 19:19:04,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-27 19:19:04,061 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 167 transitions, 1895 flow [2024-06-27 19:19:04,061 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 19:19:04,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:04,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:19:04,061 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 19:19:04,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1436624512, now seen corresponding path program 3 times [2024-06-27 19:19:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792463559] [2024-06-27 19:19:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792463559] [2024-06-27 19:19:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792463559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771369695] [2024-06-27 19:19:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:05,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:05,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:05,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:05,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:05,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 167 transitions, 1895 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 19:19:05,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:05,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:05,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:05,575 INFO L124 PetriNetUnfolderBase]: 480/843 cut-off events. [2024-06-27 19:19:05,575 INFO L125 PetriNetUnfolderBase]: For 47021/47021 co-relation queries the response was YES. [2024-06-27 19:19:05,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 843 events. 480/843 cut-off events. For 47021/47021 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3823 event pairs, 94 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 6057. Up to 756 conditions per place. [2024-06-27 19:19:05,581 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 148 selfloop transitions, 30 changer transitions 0/180 dead transitions. [2024-06-27 19:19:05,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 180 transitions, 2340 flow [2024-06-27 19:19:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:19:05,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:19:05,582 INFO L175 Difference]: Start difference. First operand has 194 places, 167 transitions, 1895 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:19:05,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 180 transitions, 2340 flow [2024-06-27 19:19:05,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 180 transitions, 2242 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:05,677 INFO L231 Difference]: Finished difference. Result has 197 places, 169 transitions, 1910 flow [2024-06-27 19:19:05,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1910, PETRI_PLACES=197, PETRI_TRANSITIONS=169} [2024-06-27 19:19:05,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-27 19:19:05,678 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 169 transitions, 1910 flow [2024-06-27 19:19:05,678 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 19:19:05,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:05,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:19:05,679 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 19:19:05,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1436624760, now seen corresponding path program 9 times [2024-06-27 19:19:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:05,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795319307] [2024-06-27 19:19:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:06,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795319307] [2024-06-27 19:19:06,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795319307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:06,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:06,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:06,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159006465] [2024-06-27 19:19:06,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:06,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:06,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:06,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 169 transitions, 1910 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 19:19:06,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:06,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:06,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:07,077 INFO L124 PetriNetUnfolderBase]: 486/853 cut-off events. [2024-06-27 19:19:07,077 INFO L125 PetriNetUnfolderBase]: For 50268/50268 co-relation queries the response was YES. [2024-06-27 19:19:07,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 853 events. 486/853 cut-off events. For 50268/50268 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3892 event pairs, 77 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 6135. Up to 668 conditions per place. [2024-06-27 19:19:07,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 48 changer transitions 0/188 dead transitions. [2024-06-27 19:19:07,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 188 transitions, 2500 flow [2024-06-27 19:19:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:19:07,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-27 19:19:07,085 INFO L175 Difference]: Start difference. First operand has 197 places, 169 transitions, 1910 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:19:07,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 188 transitions, 2500 flow [2024-06-27 19:19:07,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 188 transitions, 2420 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:07,176 INFO L231 Difference]: Finished difference. Result has 199 places, 171 transitions, 1980 flow [2024-06-27 19:19:07,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1980, PETRI_PLACES=199, PETRI_TRANSITIONS=171} [2024-06-27 19:19:07,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-27 19:19:07,176 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 171 transitions, 1980 flow [2024-06-27 19:19:07,176 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 19:19:07,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:07,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:07,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:19:07,177 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 19:19:07,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1436631270, now seen corresponding path program 10 times [2024-06-27 19:19:07,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:07,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762266324] [2024-06-27 19:19:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:07,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762266324] [2024-06-27 19:19:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762266324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:07,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:07,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338674638] [2024-06-27 19:19:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:08,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:08,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 171 transitions, 1980 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 19:19:08,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:08,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:08,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:08,437 INFO L124 PetriNetUnfolderBase]: 482/847 cut-off events. [2024-06-27 19:19:08,437 INFO L125 PetriNetUnfolderBase]: For 49181/49181 co-relation queries the response was YES. [2024-06-27 19:19:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6159 conditions, 847 events. 482/847 cut-off events. For 49181/49181 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3867 event pairs, 79 based on Foata normal form. 2/848 useless extension candidates. Maximal degree in co-relation 6059. Up to 692 conditions per place. [2024-06-27 19:19:08,443 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 42 changer transitions 0/186 dead transitions. [2024-06-27 19:19:08,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 186 transitions, 2400 flow [2024-06-27 19:19:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 19:19:08,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 19:19:08,444 INFO L175 Difference]: Start difference. First operand has 199 places, 171 transitions, 1980 flow. Second operand 9 states and 104 transitions. [2024-06-27 19:19:08,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 186 transitions, 2400 flow [2024-06-27 19:19:08,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 186 transitions, 2174 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:08,541 INFO L231 Difference]: Finished difference. Result has 200 places, 171 transitions, 1844 flow [2024-06-27 19:19:08,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1844, PETRI_PLACES=200, PETRI_TRANSITIONS=171} [2024-06-27 19:19:08,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-27 19:19:08,542 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 171 transitions, 1844 flow [2024-06-27 19:19:08,542 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 19:19:08,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:08,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:19:08,542 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 19:19:08,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:08,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2035307044, now seen corresponding path program 4 times [2024-06-27 19:19:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598730709] [2024-06-27 19:19:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:08,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:09,629 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 19:19:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598730709] [2024-06-27 19:19:09,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598730709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:09,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:09,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028797515] [2024-06-27 19:19:09,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:09,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:09,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:09,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 171 transitions, 1844 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 19:19:09,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:09,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:09,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:10,183 INFO L124 PetriNetUnfolderBase]: 483/849 cut-off events. [2024-06-27 19:19:10,183 INFO L125 PetriNetUnfolderBase]: For 48678/48678 co-relation queries the response was YES. [2024-06-27 19:19:10,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 849 events. 483/849 cut-off events. For 48678/48678 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3856 event pairs, 95 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 5860. Up to 763 conditions per place. [2024-06-27 19:19:10,190 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 27 changer transitions 0/186 dead transitions. [2024-06-27 19:19:10,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 186 transitions, 2312 flow [2024-06-27 19:19:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 19:19:10,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-27 19:19:10,191 INFO L175 Difference]: Start difference. First operand has 200 places, 171 transitions, 1844 flow. Second operand 10 states and 104 transitions. [2024-06-27 19:19:10,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 186 transitions, 2312 flow [2024-06-27 19:19:10,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 186 transitions, 2213 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:10,275 INFO L231 Difference]: Finished difference. Result has 202 places, 173 transitions, 1848 flow [2024-06-27 19:19:10,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1848, PETRI_PLACES=202, PETRI_TRANSITIONS=173} [2024-06-27 19:19:10,275 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 19:19:10,275 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 173 transitions, 1848 flow [2024-06-27 19:19:10,275 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 19:19:10,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:10,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:19:10,275 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 19:19:10,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash 70918936, now seen corresponding path program 5 times [2024-06-27 19:19:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124345522] [2024-06-27 19:19:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:11,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:11,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124345522] [2024-06-27 19:19:11,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124345522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:11,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:11,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234945752] [2024-06-27 19:19:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:11,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:11,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:11,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:11,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 173 transitions, 1848 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 19:19:11,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:11,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:11,598 INFO L124 PetriNetUnfolderBase]: 513/907 cut-off events. [2024-06-27 19:19:11,599 INFO L125 PetriNetUnfolderBase]: For 50510/50510 co-relation queries the response was YES. [2024-06-27 19:19:11,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 907 events. 513/907 cut-off events. For 50510/50510 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4251 event pairs, 74 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 6110. Up to 800 conditions per place. [2024-06-27 19:19:11,604 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 175 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-27 19:19:11,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 203 transitions, 2418 flow [2024-06-27 19:19:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:19:11,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:19:11,605 INFO L175 Difference]: Start difference. First operand has 202 places, 173 transitions, 1848 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:19:11,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 203 transitions, 2418 flow [2024-06-27 19:19:11,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 203 transitions, 2339 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:11,694 INFO L231 Difference]: Finished difference. Result has 206 places, 182 transitions, 1950 flow [2024-06-27 19:19:11,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1950, PETRI_PLACES=206, PETRI_TRANSITIONS=182} [2024-06-27 19:19:11,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-27 19:19:11,695 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 182 transitions, 1950 flow [2024-06-27 19:19:11,695 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 19:19:11,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:11,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:11,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:19:11,696 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 19:19:11,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2067930982, now seen corresponding path program 11 times [2024-06-27 19:19:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:11,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958242954] [2024-06-27 19:19:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:12,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958242954] [2024-06-27 19:19:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958242954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:12,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:12,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929958229] [2024-06-27 19:19:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:12,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:12,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 182 transitions, 1950 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 19:19:12,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:12,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:12,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:12,746 INFO L124 PetriNetUnfolderBase]: 525/927 cut-off events. [2024-06-27 19:19:12,746 INFO L125 PetriNetUnfolderBase]: For 52300/52300 co-relation queries the response was YES. [2024-06-27 19:19:12,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 927 events. 525/927 cut-off events. For 52300/52300 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4377 event pairs, 76 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 6282. Up to 833 conditions per place. [2024-06-27 19:19:12,752 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 26 changer transitions 0/206 dead transitions. [2024-06-27 19:19:12,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 206 transitions, 2483 flow [2024-06-27 19:19:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:19:12,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:19:12,753 INFO L175 Difference]: Start difference. First operand has 206 places, 182 transitions, 1950 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:19:12,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 206 transitions, 2483 flow [2024-06-27 19:19:12,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 206 transitions, 2423 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:12,865 INFO L231 Difference]: Finished difference. Result has 213 places, 187 transitions, 2028 flow [2024-06-27 19:19:12,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2028, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2024-06-27 19:19:12,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-27 19:19:12,866 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 2028 flow [2024-06-27 19:19:12,866 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 19:19:12,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:12,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:12,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:19:12,866 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 19:19:12,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1003428648, now seen corresponding path program 6 times [2024-06-27 19:19:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544997086] [2024-06-27 19:19:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:13,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544997086] [2024-06-27 19:19:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544997086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:19:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415367723] [2024-06-27 19:19:13,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:19:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:19:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:19:13,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:19:13,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 2028 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:13,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:13,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:19:13,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:13,546 INFO L124 PetriNetUnfolderBase]: 524/935 cut-off events. [2024-06-27 19:19:13,546 INFO L125 PetriNetUnfolderBase]: For 55310/55315 co-relation queries the response was YES. [2024-06-27 19:19:13,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 935 events. 524/935 cut-off events. For 55310/55315 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4536 event pairs, 86 based on Foata normal form. 6/937 useless extension candidates. Maximal degree in co-relation 6331. Up to 772 conditions per place. [2024-06-27 19:19:13,554 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 36 changer transitions 0/202 dead transitions. [2024-06-27 19:19:13,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 202 transitions, 2476 flow [2024-06-27 19:19:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:19:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:19:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 19:19:13,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-27 19:19:13,555 INFO L175 Difference]: Start difference. First operand has 213 places, 187 transitions, 2028 flow. Second operand 7 states and 89 transitions. [2024-06-27 19:19:13,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 202 transitions, 2476 flow [2024-06-27 19:19:13,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 2398 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:13,687 INFO L231 Difference]: Finished difference. Result has 215 places, 189 transitions, 2063 flow [2024-06-27 19:19:13,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2063, PETRI_PLACES=215, PETRI_TRANSITIONS=189} [2024-06-27 19:19:13,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:19:13,688 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 189 transitions, 2063 flow [2024-06-27 19:19:13,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:13,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:13,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:13,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:19:13,688 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 19:19:13,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash -723835470, now seen corresponding path program 12 times [2024-06-27 19:19:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150591748] [2024-06-27 19:19:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:14,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150591748] [2024-06-27 19:19:14,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150591748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:14,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:14,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092499729] [2024-06-27 19:19:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:14,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:14,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:14,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 189 transitions, 2063 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 19:19:14,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:14,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:14,970 INFO L124 PetriNetUnfolderBase]: 535/950 cut-off events. [2024-06-27 19:19:14,970 INFO L125 PetriNetUnfolderBase]: For 54568/54568 co-relation queries the response was YES. [2024-06-27 19:19:14,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 950 events. 535/950 cut-off events. For 54568/54568 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4580 event pairs, 90 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 6411. Up to 842 conditions per place. [2024-06-27 19:19:14,978 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2024-06-27 19:19:14,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 210 transitions, 2575 flow [2024-06-27 19:19:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:19:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:19:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:19:14,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-27 19:19:14,979 INFO L175 Difference]: Start difference. First operand has 215 places, 189 transitions, 2063 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:19:14,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 210 transitions, 2575 flow [2024-06-27 19:19:15,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 210 transitions, 2490 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:15,109 INFO L231 Difference]: Finished difference. Result has 221 places, 191 transitions, 2095 flow [2024-06-27 19:19:15,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2095, PETRI_PLACES=221, PETRI_TRANSITIONS=191} [2024-06-27 19:19:15,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-27 19:19:15,110 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 191 transitions, 2095 flow [2024-06-27 19:19:15,110 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 19:19:15,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:15,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:19:15,110 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 19:19:15,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash -427686484, now seen corresponding path program 7 times [2024-06-27 19:19:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:15,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9059404] [2024-06-27 19:19:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9059404] [2024-06-27 19:19:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9059404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:15,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:15,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:19:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23608054] [2024-06-27 19:19:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:15,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:19:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:15,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:19:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:19:15,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 19:19:15,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 191 transitions, 2095 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:15,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:15,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 19:19:15,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:15,781 INFO L124 PetriNetUnfolderBase]: 522/932 cut-off events. [2024-06-27 19:19:15,781 INFO L125 PetriNetUnfolderBase]: For 52564/52569 co-relation queries the response was YES. [2024-06-27 19:19:15,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 932 events. 522/932 cut-off events. For 52564/52569 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4512 event pairs, 93 based on Foata normal form. 6/934 useless extension candidates. Maximal degree in co-relation 6153. Up to 682 conditions per place. [2024-06-27 19:19:15,788 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 154 selfloop transitions, 38 changer transitions 0/202 dead transitions. [2024-06-27 19:19:15,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 202 transitions, 2507 flow [2024-06-27 19:19:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:19:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:19:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 19:19:15,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 19:19:15,789 INFO L175 Difference]: Start difference. First operand has 221 places, 191 transitions, 2095 flow. Second operand 7 states and 82 transitions. [2024-06-27 19:19:15,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 202 transitions, 2507 flow [2024-06-27 19:19:15,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 202 transitions, 2351 flow, removed 23 selfloop flow, removed 13 redundant places. [2024-06-27 19:19:15,901 INFO L231 Difference]: Finished difference. Result has 215 places, 191 transitions, 2019 flow [2024-06-27 19:19:15,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2019, PETRI_PLACES=215, PETRI_TRANSITIONS=191} [2024-06-27 19:19:15,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:19:15,902 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 191 transitions, 2019 flow [2024-06-27 19:19:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:15,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:15,902 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 19:19:15,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:19:15,903 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 19:19:15,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash 544586535, now seen corresponding path program 1 times [2024-06-27 19:19:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919148291] [2024-06-27 19:19:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:15,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:16,773 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 19:19:16,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919148291] [2024-06-27 19:19:16,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919148291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:16,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:16,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:16,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251700520] [2024-06-27 19:19:16,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:16,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:16,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:16,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:16,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 191 transitions, 2019 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 19:19:16,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:16,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:17,269 INFO L124 PetriNetUnfolderBase]: 536/953 cut-off events. [2024-06-27 19:19:17,269 INFO L125 PetriNetUnfolderBase]: For 54274/54274 co-relation queries the response was YES. [2024-06-27 19:19:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 953 events. 536/953 cut-off events. For 54274/54274 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4609 event pairs, 94 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 6207. Up to 809 conditions per place. [2024-06-27 19:19:17,276 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 165 selfloop transitions, 40 changer transitions 0/207 dead transitions. [2024-06-27 19:19:17,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 207 transitions, 2487 flow [2024-06-27 19:19:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:19:17,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:19:17,277 INFO L175 Difference]: Start difference. First operand has 215 places, 191 transitions, 2019 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:19:17,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 207 transitions, 2487 flow [2024-06-27 19:19:17,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 207 transitions, 2339 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:17,397 INFO L231 Difference]: Finished difference. Result has 215 places, 192 transitions, 1978 flow [2024-06-27 19:19:17,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1978, PETRI_PLACES=215, PETRI_TRANSITIONS=192} [2024-06-27 19:19:17,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:19:17,398 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 192 transitions, 1978 flow [2024-06-27 19:19:17,398 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 19:19:17,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:17,398 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 19:19:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:19:17,398 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 19:19:17,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash 632531965, now seen corresponding path program 2 times [2024-06-27 19:19:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903545560] [2024-06-27 19:19:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:18,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:18,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903545560] [2024-06-27 19:19:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903545560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:18,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:18,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:18,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78513653] [2024-06-27 19:19:18,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:18,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:18,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 192 transitions, 1978 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 19:19:18,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:18,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:18,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:18,776 INFO L124 PetriNetUnfolderBase]: 540/961 cut-off events. [2024-06-27 19:19:18,776 INFO L125 PetriNetUnfolderBase]: For 55784/55784 co-relation queries the response was YES. [2024-06-27 19:19:18,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6261 conditions, 961 events. 540/961 cut-off events. For 55784/55784 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4655 event pairs, 95 based on Foata normal form. 2/962 useless extension candidates. Maximal degree in co-relation 6162. Up to 820 conditions per place. [2024-06-27 19:19:18,783 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 35 changer transitions 0/208 dead transitions. [2024-06-27 19:19:18,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 208 transitions, 2448 flow [2024-06-27 19:19:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:19:18,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-27 19:19:18,784 INFO L175 Difference]: Start difference. First operand has 215 places, 192 transitions, 1978 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:19:18,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 208 transitions, 2448 flow [2024-06-27 19:19:18,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 208 transitions, 2316 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:18,889 INFO L231 Difference]: Finished difference. Result has 215 places, 193 transitions, 1944 flow [2024-06-27 19:19:18,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=215, PETRI_TRANSITIONS=193} [2024-06-27 19:19:18,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:19:18,889 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 193 transitions, 1944 flow [2024-06-27 19:19:18,889 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 19:19:18,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:18,890 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 19:19:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:19:18,890 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 19:19:18,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash 630658015, now seen corresponding path program 3 times [2024-06-27 19:19:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118337320] [2024-06-27 19:19:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:18,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:19,757 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 19:19:19,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:19,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118337320] [2024-06-27 19:19:19,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118337320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:19,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:19,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701138972] [2024-06-27 19:19:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:19,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:19,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:19,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 193 transitions, 1944 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 19:19:19,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:19,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:19,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:20,261 INFO L124 PetriNetUnfolderBase]: 544/969 cut-off events. [2024-06-27 19:19:20,261 INFO L125 PetriNetUnfolderBase]: For 56227/56227 co-relation queries the response was YES. [2024-06-27 19:19:20,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6215 conditions, 969 events. 544/969 cut-off events. For 56227/56227 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4717 event pairs, 70 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 6117. Up to 747 conditions per place. [2024-06-27 19:19:20,268 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 166 selfloop transitions, 43 changer transitions 0/211 dead transitions. [2024-06-27 19:19:20,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2426 flow [2024-06-27 19:19:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:19:20,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:19:20,269 INFO L175 Difference]: Start difference. First operand has 215 places, 193 transitions, 1944 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:19:20,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2426 flow [2024-06-27 19:19:20,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 211 transitions, 2342 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:20,392 INFO L231 Difference]: Finished difference. Result has 218 places, 194 transitions, 1977 flow [2024-06-27 19:19:20,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1977, PETRI_PLACES=218, PETRI_TRANSITIONS=194} [2024-06-27 19:19:20,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-27 19:19:20,393 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 194 transitions, 1977 flow [2024-06-27 19:19:20,393 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 19:19:20,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:20,393 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 19:19:20,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:19:20,393 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 19:19:20,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1593743042, now seen corresponding path program 1 times [2024-06-27 19:19:20,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:20,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697553600] [2024-06-27 19:19:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:21,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:21,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697553600] [2024-06-27 19:19:21,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697553600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:21,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112193691] [2024-06-27 19:19:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:21,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:21,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:21,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:21,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:21,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:21,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 194 transitions, 1977 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 19:19:21,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:21,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:21,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:21,656 INFO L124 PetriNetUnfolderBase]: 542/966 cut-off events. [2024-06-27 19:19:21,657 INFO L125 PetriNetUnfolderBase]: For 55188/55188 co-relation queries the response was YES. [2024-06-27 19:19:21,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6169 conditions, 966 events. 542/966 cut-off events. For 55188/55188 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4700 event pairs, 96 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 6070. Up to 807 conditions per place. [2024-06-27 19:19:21,665 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 160 selfloop transitions, 47 changer transitions 0/209 dead transitions. [2024-06-27 19:19:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 209 transitions, 2433 flow [2024-06-27 19:19:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:19:21,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:19:21,666 INFO L175 Difference]: Start difference. First operand has 218 places, 194 transitions, 1977 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:19:21,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 209 transitions, 2433 flow [2024-06-27 19:19:21,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 209 transitions, 2318 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:21,780 INFO L231 Difference]: Finished difference. Result has 219 places, 194 transitions, 1970 flow [2024-06-27 19:19:21,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=219, PETRI_TRANSITIONS=194} [2024-06-27 19:19:21,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 19:19:21,781 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 194 transitions, 1970 flow [2024-06-27 19:19:21,781 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 19:19:21,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:21,781 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 19:19:21,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:19:21,781 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 19:19:21,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 719377597, now seen corresponding path program 1 times [2024-06-27 19:19:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205258030] [2024-06-27 19:19:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:22,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:22,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205258030] [2024-06-27 19:19:22,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205258030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:22,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:22,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:22,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037575382] [2024-06-27 19:19:22,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:22,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:22,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:22,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:22,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 194 transitions, 1970 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 19:19:22,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:22,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:22,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:23,379 INFO L124 PetriNetUnfolderBase]: 558/992 cut-off events. [2024-06-27 19:19:23,379 INFO L125 PetriNetUnfolderBase]: For 61062/61062 co-relation queries the response was YES. [2024-06-27 19:19:23,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6461 conditions, 992 events. 558/992 cut-off events. For 61062/61062 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4832 event pairs, 84 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 6361. Up to 825 conditions per place. [2024-06-27 19:19:23,385 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 170 selfloop transitions, 44 changer transitions 0/216 dead transitions. [2024-06-27 19:19:23,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 216 transitions, 2650 flow [2024-06-27 19:19:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:19:23,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:19:23,386 INFO L175 Difference]: Start difference. First operand has 219 places, 194 transitions, 1970 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:19:23,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 216 transitions, 2650 flow [2024-06-27 19:19:23,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 216 transitions, 2524 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:23,521 INFO L231 Difference]: Finished difference. Result has 222 places, 198 transitions, 2033 flow [2024-06-27 19:19:23,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2033, PETRI_PLACES=222, PETRI_TRANSITIONS=198} [2024-06-27 19:19:23,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-27 19:19:23,522 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 198 transitions, 2033 flow [2024-06-27 19:19:23,522 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 19:19:23,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:23,522 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 19:19:23,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:19:23,522 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 19:19:23,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2144485385, now seen corresponding path program 4 times [2024-06-27 19:19:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:23,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696129060] [2024-06-27 19:19:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:24,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696129060] [2024-06-27 19:19:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696129060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581311875] [2024-06-27 19:19:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:24,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:24,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:24,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 198 transitions, 2033 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 19:19:24,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:24,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:24,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:24,912 INFO L124 PetriNetUnfolderBase]: 562/1000 cut-off events. [2024-06-27 19:19:24,912 INFO L125 PetriNetUnfolderBase]: For 59882/59882 co-relation queries the response was YES. [2024-06-27 19:19:24,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 1000 events. 562/1000 cut-off events. For 59882/59882 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4918 event pairs, 71 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6442. Up to 804 conditions per place. [2024-06-27 19:19:24,920 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 159 selfloop transitions, 54 changer transitions 0/215 dead transitions. [2024-06-27 19:19:24,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 215 transitions, 2535 flow [2024-06-27 19:19:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:19:24,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 19:19:24,921 INFO L175 Difference]: Start difference. First operand has 222 places, 198 transitions, 2033 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:19:24,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 215 transitions, 2535 flow [2024-06-27 19:19:25,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 215 transitions, 2447 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:25,036 INFO L231 Difference]: Finished difference. Result has 225 places, 199 transitions, 2083 flow [2024-06-27 19:19:25,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2083, PETRI_PLACES=225, PETRI_TRANSITIONS=199} [2024-06-27 19:19:25,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-27 19:19:25,036 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 199 transitions, 2083 flow [2024-06-27 19:19:25,036 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 19:19:25,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:25,037 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 19:19:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:19:25,037 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 19:19:25,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2144491337, now seen corresponding path program 2 times [2024-06-27 19:19:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:25,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078793588] [2024-06-27 19:19:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:25,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:26,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078793588] [2024-06-27 19:19:26,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078793588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:26,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:26,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:26,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237941191] [2024-06-27 19:19:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:26,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:26,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:26,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:26,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 199 transitions, 2083 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 19:19:26,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:26,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:26,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:27,003 INFO L124 PetriNetUnfolderBase]: 568/1010 cut-off events. [2024-06-27 19:19:27,003 INFO L125 PetriNetUnfolderBase]: For 63221/63221 co-relation queries the response was YES. [2024-06-27 19:19:27,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6703 conditions, 1010 events. 568/1010 cut-off events. For 63221/63221 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4977 event pairs, 70 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 6599. Up to 804 conditions per place. [2024-06-27 19:19:27,009 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 57 changer transitions 0/219 dead transitions. [2024-06-27 19:19:27,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 219 transitions, 2623 flow [2024-06-27 19:19:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:19:27,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:19:27,011 INFO L175 Difference]: Start difference. First operand has 225 places, 199 transitions, 2083 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:19:27,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 219 transitions, 2623 flow [2024-06-27 19:19:27,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 219 transitions, 2495 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:27,158 INFO L231 Difference]: Finished difference. Result has 228 places, 201 transitions, 2124 flow [2024-06-27 19:19:27,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2124, PETRI_PLACES=228, PETRI_TRANSITIONS=201} [2024-06-27 19:19:27,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-27 19:19:27,158 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 201 transitions, 2124 flow [2024-06-27 19:19:27,159 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 19:19:27,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:27,159 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 19:19:27,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:19:27,159 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 19:19:27,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash 4008480, now seen corresponding path program 1 times [2024-06-27 19:19:27,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:27,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23137900] [2024-06-27 19:19:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23137900] [2024-06-27 19:19:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23137900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:29,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:29,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211726002] [2024-06-27 19:19:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:29,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:29,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 201 transitions, 2124 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 19:19:29,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:29,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:29,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:29,771 INFO L124 PetriNetUnfolderBase]: 571/1015 cut-off events. [2024-06-27 19:19:29,772 INFO L125 PetriNetUnfolderBase]: For 62937/62937 co-relation queries the response was YES. [2024-06-27 19:19:29,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6777 conditions, 1015 events. 571/1015 cut-off events. For 62937/62937 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5010 event pairs, 120 based on Foata normal form. 1/1015 useless extension candidates. Maximal degree in co-relation 6672. Up to 913 conditions per place. [2024-06-27 19:19:29,779 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 181 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-27 19:19:29,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 2650 flow [2024-06-27 19:19:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:19:29,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:19:29,781 INFO L175 Difference]: Start difference. First operand has 228 places, 201 transitions, 2124 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:19:29,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 2650 flow [2024-06-27 19:19:29,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 216 transitions, 2497 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:29,913 INFO L231 Difference]: Finished difference. Result has 229 places, 203 transitions, 2095 flow [2024-06-27 19:19:29,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2095, PETRI_PLACES=229, PETRI_TRANSITIONS=203} [2024-06-27 19:19:29,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-27 19:19:29,914 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 203 transitions, 2095 flow [2024-06-27 19:19:29,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:19:29,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:29,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:29,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:19:29,915 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 19:19:29,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1713531, now seen corresponding path program 5 times [2024-06-27 19:19:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403578035] [2024-06-27 19:19:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:30,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403578035] [2024-06-27 19:19:30,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403578035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:30,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446395120] [2024-06-27 19:19:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:30,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:30,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:30,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 203 transitions, 2095 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 19:19:30,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:31,331 INFO L124 PetriNetUnfolderBase]: 575/1023 cut-off events. [2024-06-27 19:19:31,332 INFO L125 PetriNetUnfolderBase]: For 66829/66829 co-relation queries the response was YES. [2024-06-27 19:19:31,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 1023 events. 575/1023 cut-off events. For 66829/66829 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5046 event pairs, 82 based on Foata normal form. 2/1024 useless extension candidates. Maximal degree in co-relation 6652. Up to 875 conditions per place. [2024-06-27 19:19:31,339 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 175 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-06-27 19:19:31,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 218 transitions, 2591 flow [2024-06-27 19:19:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:19:31,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-27 19:19:31,340 INFO L175 Difference]: Start difference. First operand has 229 places, 203 transitions, 2095 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:19:31,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 218 transitions, 2591 flow [2024-06-27 19:19:31,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 218 transitions, 2503 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:31,485 INFO L231 Difference]: Finished difference. Result has 231 places, 204 transitions, 2121 flow [2024-06-27 19:19:31,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2121, PETRI_PLACES=231, PETRI_TRANSITIONS=204} [2024-06-27 19:19:31,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-27 19:19:31,486 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 204 transitions, 2121 flow [2024-06-27 19:19:31,486 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 19:19:31,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:31,486 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 19:19:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:19:31,486 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 19:19:31,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1563429, now seen corresponding path program 3 times [2024-06-27 19:19:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450157730] [2024-06-27 19:19:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:31,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:32,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:32,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450157730] [2024-06-27 19:19:32,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450157730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:32,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:32,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:32,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651868737] [2024-06-27 19:19:32,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:32,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:32,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:32,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 204 transitions, 2121 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 19:19:32,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:32,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:33,030 INFO L124 PetriNetUnfolderBase]: 581/1033 cut-off events. [2024-06-27 19:19:33,030 INFO L125 PetriNetUnfolderBase]: For 67118/67118 co-relation queries the response was YES. [2024-06-27 19:19:33,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 1033 events. 581/1033 cut-off events. For 67118/67118 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5102 event pairs, 81 based on Foata normal form. 2/1034 useless extension candidates. Maximal degree in co-relation 6757. Up to 875 conditions per place. [2024-06-27 19:19:33,039 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 44 changer transitions 0/222 dead transitions. [2024-06-27 19:19:33,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 222 transitions, 2657 flow [2024-06-27 19:19:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:19:33,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:19:33,040 INFO L175 Difference]: Start difference. First operand has 231 places, 204 transitions, 2121 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:19:33,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 222 transitions, 2657 flow [2024-06-27 19:19:33,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 222 transitions, 2553 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:33,184 INFO L231 Difference]: Finished difference. Result has 234 places, 206 transitions, 2164 flow [2024-06-27 19:19:33,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2164, PETRI_PLACES=234, PETRI_TRANSITIONS=206} [2024-06-27 19:19:33,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-27 19:19:33,185 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 206 transitions, 2164 flow [2024-06-27 19:19:33,185 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 19:19:33,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:33,185 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 19:19:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:19:33,185 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 19:19:33,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1455218767, now seen corresponding path program 6 times [2024-06-27 19:19:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204733954] [2024-06-27 19:19:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:34,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:34,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204733954] [2024-06-27 19:19:34,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204733954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:34,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367454946] [2024-06-27 19:19:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:34,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:34,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 206 transitions, 2164 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 19:19:34,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:34,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:34,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:34,539 INFO L124 PetriNetUnfolderBase]: 585/1041 cut-off events. [2024-06-27 19:19:34,539 INFO L125 PetriNetUnfolderBase]: For 69114/69114 co-relation queries the response was YES. [2024-06-27 19:19:34,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1041 events. 585/1041 cut-off events. For 69114/69114 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5175 event pairs, 79 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 6848. Up to 893 conditions per place. [2024-06-27 19:19:34,547 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 179 selfloop transitions, 40 changer transitions 0/221 dead transitions. [2024-06-27 19:19:34,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 221 transitions, 2666 flow [2024-06-27 19:19:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:19:34,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 19:19:34,548 INFO L175 Difference]: Start difference. First operand has 234 places, 206 transitions, 2164 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:19:34,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 221 transitions, 2666 flow [2024-06-27 19:19:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 221 transitions, 2535 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:34,684 INFO L231 Difference]: Finished difference. Result has 235 places, 207 transitions, 2147 flow [2024-06-27 19:19:34,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=235, PETRI_TRANSITIONS=207} [2024-06-27 19:19:34,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-27 19:19:34,684 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 207 transitions, 2147 flow [2024-06-27 19:19:34,684 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 19:19:34,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:34,685 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 19:19:34,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:19:34,685 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 19:19:34,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash 4008201, now seen corresponding path program 4 times [2024-06-27 19:19:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332463038] [2024-06-27 19:19:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332463038] [2024-06-27 19:19:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332463038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:35,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974159563] [2024-06-27 19:19:35,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:36,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 207 transitions, 2147 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 19:19:36,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:36,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:36,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:36,414 INFO L124 PetriNetUnfolderBase]: 601/1067 cut-off events. [2024-06-27 19:19:36,414 INFO L125 PetriNetUnfolderBase]: For 76767/76767 co-relation queries the response was YES. [2024-06-27 19:19:36,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7297 conditions, 1067 events. 601/1067 cut-off events. For 76767/76767 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5309 event pairs, 70 based on Foata normal form. 2/1068 useless extension candidates. Maximal degree in co-relation 7188. Up to 751 conditions per place. [2024-06-27 19:19:36,423 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 81 changer transitions 0/232 dead transitions. [2024-06-27 19:19:36,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 232 transitions, 2935 flow [2024-06-27 19:19:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:19:36,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:19:36,424 INFO L175 Difference]: Start difference. First operand has 235 places, 207 transitions, 2147 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:19:36,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 232 transitions, 2935 flow [2024-06-27 19:19:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 232 transitions, 2831 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:36,596 INFO L231 Difference]: Finished difference. Result has 238 places, 211 transitions, 2323 flow [2024-06-27 19:19:36,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2323, PETRI_PLACES=238, PETRI_TRANSITIONS=211} [2024-06-27 19:19:36,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-27 19:19:36,596 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 211 transitions, 2323 flow [2024-06-27 19:19:36,597 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 19:19:36,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:36,597 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 19:19:36,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:19:36,597 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 19:19:36,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -14433265, now seen corresponding path program 5 times [2024-06-27 19:19:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605789963] [2024-06-27 19:19:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:37,910 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 19:19:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605789963] [2024-06-27 19:19:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605789963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131868297] [2024-06-27 19:19:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:37,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:38,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:38,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 211 transitions, 2323 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 19:19:38,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:38,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:38,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:38,570 INFO L124 PetriNetUnfolderBase]: 602/1069 cut-off events. [2024-06-27 19:19:38,570 INFO L125 PetriNetUnfolderBase]: For 76756/76756 co-relation queries the response was YES. [2024-06-27 19:19:38,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7407 conditions, 1069 events. 602/1069 cut-off events. For 76756/76756 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5343 event pairs, 70 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 7297. Up to 754 conditions per place. [2024-06-27 19:19:38,579 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 77 changer transitions 0/233 dead transitions. [2024-06-27 19:19:38,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 233 transitions, 3055 flow [2024-06-27 19:19:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:19:38,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:19:38,580 INFO L175 Difference]: Start difference. First operand has 238 places, 211 transitions, 2323 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:19:38,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 233 transitions, 3055 flow [2024-06-27 19:19:38,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 233 transitions, 2902 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:38,769 INFO L231 Difference]: Finished difference. Result has 242 places, 213 transitions, 2387 flow [2024-06-27 19:19:38,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2387, PETRI_PLACES=242, PETRI_TRANSITIONS=213} [2024-06-27 19:19:38,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-27 19:19:38,770 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 213 transitions, 2387 flow [2024-06-27 19:19:38,770 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 19:19:38,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:38,770 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 19:19:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:19:38,770 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 19:19:38,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1109062211, now seen corresponding path program 1 times [2024-06-27 19:19:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:38,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37926883] [2024-06-27 19:19:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:39,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37926883] [2024-06-27 19:19:39,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37926883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:39,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478515075] [2024-06-27 19:19:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:39,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:39,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 213 transitions, 2387 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 19:19:39,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:39,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:39,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:40,271 INFO L124 PetriNetUnfolderBase]: 610/1086 cut-off events. [2024-06-27 19:19:40,271 INFO L125 PetriNetUnfolderBase]: For 84535/84535 co-relation queries the response was YES. [2024-06-27 19:19:40,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1086 events. 610/1086 cut-off events. For 84535/84535 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5456 event pairs, 126 based on Foata normal form. 4/1089 useless extension candidates. Maximal degree in co-relation 7443. Up to 979 conditions per place. [2024-06-27 19:19:40,281 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 202 selfloop transitions, 29 changer transitions 0/233 dead transitions. [2024-06-27 19:19:40,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 233 transitions, 2953 flow [2024-06-27 19:19:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:19:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:19:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:19:40,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:19:40,282 INFO L175 Difference]: Start difference. First operand has 242 places, 213 transitions, 2387 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:19:40,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 233 transitions, 2953 flow [2024-06-27 19:19:40,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 233 transitions, 2784 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:40,466 INFO L231 Difference]: Finished difference. Result has 246 places, 214 transitions, 2298 flow [2024-06-27 19:19:40,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2298, PETRI_PLACES=246, PETRI_TRANSITIONS=214} [2024-06-27 19:19:40,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-27 19:19:40,467 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 214 transitions, 2298 flow [2024-06-27 19:19:40,467 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 19:19:40,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:40,467 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 19:19:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:19:40,467 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 19:19:40,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2064715945, now seen corresponding path program 7 times [2024-06-27 19:19:40,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:40,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548350408] [2024-06-27 19:19:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:40,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:41,468 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 19:19:41,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548350408] [2024-06-27 19:19:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548350408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302367462] [2024-06-27 19:19:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:41,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:41,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:41,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:41,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 214 transitions, 2298 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 19:19:41,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:41,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:41,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:41,947 INFO L124 PetriNetUnfolderBase]: 614/1094 cut-off events. [2024-06-27 19:19:41,948 INFO L125 PetriNetUnfolderBase]: For 80887/80889 co-relation queries the response was YES. [2024-06-27 19:19:41,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7505 conditions, 1094 events. 614/1094 cut-off events. For 80887/80889 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5510 event pairs, 69 based on Foata normal form. 2/1095 useless extension candidates. Maximal degree in co-relation 7392. Up to 853 conditions per place. [2024-06-27 19:19:41,956 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 164 selfloop transitions, 64 changer transitions 0/230 dead transitions. [2024-06-27 19:19:41,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 230 transitions, 2840 flow [2024-06-27 19:19:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:19:41,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:19:41,965 INFO L175 Difference]: Start difference. First operand has 246 places, 214 transitions, 2298 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:19:41,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 230 transitions, 2840 flow [2024-06-27 19:19:42,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 230 transitions, 2770 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:19:42,131 INFO L231 Difference]: Finished difference. Result has 246 places, 215 transitions, 2392 flow [2024-06-27 19:19:42,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2392, PETRI_PLACES=246, PETRI_TRANSITIONS=215} [2024-06-27 19:19:42,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-27 19:19:42,131 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 215 transitions, 2392 flow [2024-06-27 19:19:42,132 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 19:19:42,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:42,132 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 19:19:42,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:19:42,132 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 19:19:42,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash 879409, now seen corresponding path program 6 times [2024-06-27 19:19:42,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:42,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618776316] [2024-06-27 19:19:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:43,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:43,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618776316] [2024-06-27 19:19:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618776316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:43,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:43,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469558430] [2024-06-27 19:19:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:43,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:43,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:43,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:43,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:43,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 215 transitions, 2392 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 19:19:43,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:43,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:43,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:43,825 INFO L124 PetriNetUnfolderBase]: 642/1140 cut-off events. [2024-06-27 19:19:43,825 INFO L125 PetriNetUnfolderBase]: For 89350/89352 co-relation queries the response was YES. [2024-06-27 19:19:43,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8082 conditions, 1140 events. 642/1140 cut-off events. For 89350/89352 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5792 event pairs, 92 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7968. Up to 942 conditions per place. [2024-06-27 19:19:43,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 51 changer transitions 0/242 dead transitions. [2024-06-27 19:19:43,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 242 transitions, 3230 flow [2024-06-27 19:19:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:19:43,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:19:43,836 INFO L175 Difference]: Start difference. First operand has 246 places, 215 transitions, 2392 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:19:43,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 242 transitions, 3230 flow [2024-06-27 19:19:44,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 242 transitions, 3076 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:44,074 INFO L231 Difference]: Finished difference. Result has 250 places, 223 transitions, 2500 flow [2024-06-27 19:19:44,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2500, PETRI_PLACES=250, PETRI_TRANSITIONS=223} [2024-06-27 19:19:44,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-27 19:19:44,074 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 223 transitions, 2500 flow [2024-06-27 19:19:44,074 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 19:19:44,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:44,074 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 19:19:44,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:19:44,075 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 19:19:44,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:44,075 INFO L85 PathProgramCache]: Analyzing trace with hash 871969, now seen corresponding path program 7 times [2024-06-27 19:19:44,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:44,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513432937] [2024-06-27 19:19:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:44,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:45,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:45,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513432937] [2024-06-27 19:19:45,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513432937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:45,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:45,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:45,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545415964] [2024-06-27 19:19:45,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:45,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:45,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 223 transitions, 2500 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 19:19:45,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:45,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:45,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:45,715 INFO L124 PetriNetUnfolderBase]: 648/1150 cut-off events. [2024-06-27 19:19:45,715 INFO L125 PetriNetUnfolderBase]: For 91984/91986 co-relation queries the response was YES. [2024-06-27 19:19:45,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8195 conditions, 1150 events. 648/1150 cut-off events. For 91984/91986 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5853 event pairs, 93 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8079. Up to 948 conditions per place. [2024-06-27 19:19:45,725 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 52 changer transitions 0/243 dead transitions. [2024-06-27 19:19:45,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 243 transitions, 3258 flow [2024-06-27 19:19:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:19:45,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:19:45,726 INFO L175 Difference]: Start difference. First operand has 250 places, 223 transitions, 2500 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:19:45,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 243 transitions, 3258 flow [2024-06-27 19:19:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 243 transitions, 3132 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:45,951 INFO L231 Difference]: Finished difference. Result has 255 places, 225 transitions, 2545 flow [2024-06-27 19:19:45,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2545, PETRI_PLACES=255, PETRI_TRANSITIONS=225} [2024-06-27 19:19:45,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-27 19:19:45,952 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 225 transitions, 2545 flow [2024-06-27 19:19:45,952 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 19:19:45,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:45,952 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 19:19:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:19:45,952 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 19:19:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash -969992819, now seen corresponding path program 8 times [2024-06-27 19:19:45,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:45,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849362977] [2024-06-27 19:19:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:45,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:47,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:47,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849362977] [2024-06-27 19:19:47,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849362977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:47,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748512704] [2024-06-27 19:19:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:47,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:47,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:47,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:47,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 225 transitions, 2545 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 19:19:47,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:47,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:47,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:48,101 INFO L124 PetriNetUnfolderBase]: 684/1208 cut-off events. [2024-06-27 19:19:48,101 INFO L125 PetriNetUnfolderBase]: For 112002/112004 co-relation queries the response was YES. [2024-06-27 19:19:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9212 conditions, 1208 events. 684/1208 cut-off events. For 112002/112004 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6166 event pairs, 90 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 9094. Up to 493 conditions per place. [2024-06-27 19:19:48,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 105 changer transitions 0/259 dead transitions. [2024-06-27 19:19:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 259 transitions, 3878 flow [2024-06-27 19:19:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:19:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:19:48,113 INFO L175 Difference]: Start difference. First operand has 255 places, 225 transitions, 2545 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:19:48,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 259 transitions, 3878 flow [2024-06-27 19:19:48,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 259 transitions, 3747 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:48,368 INFO L231 Difference]: Finished difference. Result has 260 places, 236 transitions, 2920 flow [2024-06-27 19:19:48,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2920, PETRI_PLACES=260, PETRI_TRANSITIONS=236} [2024-06-27 19:19:48,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-27 19:19:48,369 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 236 transitions, 2920 flow [2024-06-27 19:19:48,369 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 19:19:48,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:48,369 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 19:19:48,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:19:48,369 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 19:19:48,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1684726207, now seen corresponding path program 9 times [2024-06-27 19:19:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955310866] [2024-06-27 19:19:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955310866] [2024-06-27 19:19:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955310866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961116573] [2024-06-27 19:19:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:49,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:49,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:49,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 236 transitions, 2920 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 19:19:49,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:49,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:49,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:49,996 INFO L124 PetriNetUnfolderBase]: 690/1218 cut-off events. [2024-06-27 19:19:49,996 INFO L125 PetriNetUnfolderBase]: For 115913/115915 co-relation queries the response was YES. [2024-06-27 19:19:50,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 1218 events. 690/1218 cut-off events. For 115913/115915 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6250 event pairs, 70 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 9395. Up to 928 conditions per place. [2024-06-27 19:19:50,004 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 73 changer transitions 0/258 dead transitions. [2024-06-27 19:19:50,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 258 transitions, 3732 flow [2024-06-27 19:19:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:19:50,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 19:19:50,005 INFO L175 Difference]: Start difference. First operand has 260 places, 236 transitions, 2920 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:19:50,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 258 transitions, 3732 flow [2024-06-27 19:19:50,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 258 transitions, 3569 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 19:19:50,285 INFO L231 Difference]: Finished difference. Result has 266 places, 238 transitions, 2976 flow [2024-06-27 19:19:50,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2976, PETRI_PLACES=266, PETRI_TRANSITIONS=238} [2024-06-27 19:19:50,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-27 19:19:50,285 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 238 transitions, 2976 flow [2024-06-27 19:19:50,285 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 19:19:50,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:50,286 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 19:19:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:19:50,286 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 19:19:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1684524397, now seen corresponding path program 10 times [2024-06-27 19:19:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196612625] [2024-06-27 19:19:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196612625] [2024-06-27 19:19:51,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196612625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:51,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:51,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878070247] [2024-06-27 19:19:51,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:51,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:51,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:51,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 238 transitions, 2976 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 19:19:51,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:51,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:51,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:51,917 INFO L124 PetriNetUnfolderBase]: 686/1212 cut-off events. [2024-06-27 19:19:51,917 INFO L125 PetriNetUnfolderBase]: For 111343/111345 co-relation queries the response was YES. [2024-06-27 19:19:51,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9305 conditions, 1212 events. 686/1212 cut-off events. For 111343/111345 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6208 event pairs, 72 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 9183. Up to 961 conditions per place. [2024-06-27 19:19:51,929 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 67 changer transitions 0/256 dead transitions. [2024-06-27 19:19:51,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 256 transitions, 3577 flow [2024-06-27 19:19:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:19:51,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:19:51,930 INFO L175 Difference]: Start difference. First operand has 266 places, 238 transitions, 2976 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:19:51,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 256 transitions, 3577 flow [2024-06-27 19:19:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 256 transitions, 3330 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:52,224 INFO L231 Difference]: Finished difference. Result has 269 places, 239 transitions, 2899 flow [2024-06-27 19:19:52,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2899, PETRI_PLACES=269, PETRI_TRANSITIONS=239} [2024-06-27 19:19:52,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-27 19:19:52,224 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 239 transitions, 2899 flow [2024-06-27 19:19:52,224 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 19:19:52,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:52,224 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 19:19:52,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:19:52,225 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 19:19:52,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash 353864121, now seen corresponding path program 2 times [2024-06-27 19:19:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142783856] [2024-06-27 19:19:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:53,171 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 19:19:53,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142783856] [2024-06-27 19:19:53,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142783856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:53,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:53,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:53,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899706283] [2024-06-27 19:19:53,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:53,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:53,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:53,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:53,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 239 transitions, 2899 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 19:19:53,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:53,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:53,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:53,674 INFO L124 PetriNetUnfolderBase]: 694/1228 cut-off events. [2024-06-27 19:19:53,674 INFO L125 PetriNetUnfolderBase]: For 120171/120173 co-relation queries the response was YES. [2024-06-27 19:19:53,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9250 conditions, 1228 events. 694/1228 cut-off events. For 120171/120173 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6334 event pairs, 127 based on Foata normal form. 4/1231 useless extension candidates. Maximal degree in co-relation 9127. Up to 1100 conditions per place. [2024-06-27 19:19:53,683 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 218 selfloop transitions, 35 changer transitions 0/255 dead transitions. [2024-06-27 19:19:53,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 255 transitions, 3495 flow [2024-06-27 19:19:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:19:53,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:19:53,684 INFO L175 Difference]: Start difference. First operand has 269 places, 239 transitions, 2899 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:19:53,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 255 transitions, 3495 flow [2024-06-27 19:19:53,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 255 transitions, 3358 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:53,980 INFO L231 Difference]: Finished difference. Result has 271 places, 240 transitions, 2856 flow [2024-06-27 19:19:53,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2856, PETRI_PLACES=271, PETRI_TRANSITIONS=240} [2024-06-27 19:19:53,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-27 19:19:53,981 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 240 transitions, 2856 flow [2024-06-27 19:19:53,981 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 19:19:53,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:53,981 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 19:19:53,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:19:53,981 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 19:19:53,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:53,981 INFO L85 PathProgramCache]: Analyzing trace with hash -198781733, now seen corresponding path program 8 times [2024-06-27 19:19:53,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:53,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543993108] [2024-06-27 19:19:53,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:53,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:54,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:54,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543993108] [2024-06-27 19:19:54,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543993108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:54,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:54,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:54,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426945224] [2024-06-27 19:19:54,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:54,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:54,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 240 transitions, 2856 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 19:19:54,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:54,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:54,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:55,442 INFO L124 PetriNetUnfolderBase]: 698/1236 cut-off events. [2024-06-27 19:19:55,442 INFO L125 PetriNetUnfolderBase]: For 116248/116248 co-relation queries the response was YES. [2024-06-27 19:19:55,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9270 conditions, 1236 events. 698/1236 cut-off events. For 116248/116248 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6364 event pairs, 108 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 9146. Up to 1087 conditions per place. [2024-06-27 19:19:55,452 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 211 selfloop transitions, 43 changer transitions 0/256 dead transitions. [2024-06-27 19:19:55,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 256 transitions, 3443 flow [2024-06-27 19:19:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:19:55,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:19:55,453 INFO L175 Difference]: Start difference. First operand has 271 places, 240 transitions, 2856 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:19:55,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 256 transitions, 3443 flow [2024-06-27 19:19:55,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 256 transitions, 3359 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:55,710 INFO L231 Difference]: Finished difference. Result has 273 places, 241 transitions, 2896 flow [2024-06-27 19:19:55,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2896, PETRI_PLACES=273, PETRI_TRANSITIONS=241} [2024-06-27 19:19:55,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-27 19:19:55,710 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 241 transitions, 2896 flow [2024-06-27 19:19:55,711 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 19:19:55,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:55,711 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 19:19:55,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:19:55,711 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 19:19:55,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash -198785453, now seen corresponding path program 9 times [2024-06-27 19:19:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593976848] [2024-06-27 19:19:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:56,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:56,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593976848] [2024-06-27 19:19:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593976848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273034278] [2024-06-27 19:19:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:56,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:56,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 241 transitions, 2896 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 19:19:56,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:56,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:56,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:57,030 INFO L124 PetriNetUnfolderBase]: 702/1244 cut-off events. [2024-06-27 19:19:57,030 INFO L125 PetriNetUnfolderBase]: For 119613/119615 co-relation queries the response was YES. [2024-06-27 19:19:57,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 1244 events. 702/1244 cut-off events. For 119613/119615 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6438 event pairs, 115 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 9266. Up to 1095 conditions per place. [2024-06-27 19:19:57,042 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 214 selfloop transitions, 39 changer transitions 0/255 dead transitions. [2024-06-27 19:19:57,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 255 transitions, 3470 flow [2024-06-27 19:19:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:19:57,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:19:57,043 INFO L175 Difference]: Start difference. First operand has 273 places, 241 transitions, 2896 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:19:57,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 255 transitions, 3470 flow [2024-06-27 19:19:57,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 255 transitions, 3356 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:57,362 INFO L231 Difference]: Finished difference. Result has 274 places, 242 transitions, 2900 flow [2024-06-27 19:19:57,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2900, PETRI_PLACES=274, PETRI_TRANSITIONS=242} [2024-06-27 19:19:57,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-27 19:19:57,362 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 242 transitions, 2900 flow [2024-06-27 19:19:57,363 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 19:19:57,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:57,363 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 19:19:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:19:57,363 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 19:19:57,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1337624549, now seen corresponding path program 10 times [2024-06-27 19:19:57,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:57,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021394369] [2024-06-27 19:19:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:58,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021394369] [2024-06-27 19:19:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021394369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:19:58,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947450552] [2024-06-27 19:19:58,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:58,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:19:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:19:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:19:58,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:58,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 242 transitions, 2900 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 19:19:58,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:58,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:58,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:58,798 INFO L124 PetriNetUnfolderBase]: 706/1252 cut-off events. [2024-06-27 19:19:58,798 INFO L125 PetriNetUnfolderBase]: For 122780/122780 co-relation queries the response was YES. [2024-06-27 19:19:58,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9455 conditions, 1252 events. 706/1252 cut-off events. For 122780/122780 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6520 event pairs, 105 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 9329. Up to 1099 conditions per place. [2024-06-27 19:19:58,809 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 45 changer transitions 0/258 dead transitions. [2024-06-27 19:19:58,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 258 transitions, 3501 flow [2024-06-27 19:19:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:19:58,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:19:58,810 INFO L175 Difference]: Start difference. First operand has 274 places, 242 transitions, 2900 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:19:58,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 258 transitions, 3501 flow [2024-06-27 19:19:59,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 258 transitions, 3393 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:59,082 INFO L231 Difference]: Finished difference. Result has 277 places, 243 transitions, 2924 flow [2024-06-27 19:19:59,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2924, PETRI_PLACES=277, PETRI_TRANSITIONS=243} [2024-06-27 19:19:59,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-27 19:19:59,083 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 243 transitions, 2924 flow [2024-06-27 19:19:59,083 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 19:19:59,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:59,083 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 19:19:59,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:19:59,083 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 19:19:59,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1949241635, now seen corresponding path program 11 times [2024-06-27 19:19:59,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:59,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476255892] [2024-06-27 19:19:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:00,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:00,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476255892] [2024-06-27 19:20:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476255892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:00,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:00,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133793129] [2024-06-27 19:20:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:00,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:00,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:00,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:00,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 243 transitions, 2924 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 19:20:00,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:00,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:00,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:00,693 INFO L124 PetriNetUnfolderBase]: 708/1255 cut-off events. [2024-06-27 19:20:00,693 INFO L125 PetriNetUnfolderBase]: For 126351/126351 co-relation queries the response was YES. [2024-06-27 19:20:00,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 1255 events. 708/1255 cut-off events. For 126351/126351 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6513 event pairs, 167 based on Foata normal form. 4/1258 useless extension candidates. Maximal degree in co-relation 9189. Up to 1181 conditions per place. [2024-06-27 19:20:00,704 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 231 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-06-27 19:20:00,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 260 transitions, 3698 flow [2024-06-27 19:20:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:20:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:20:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 19:20:00,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-27 19:20:00,705 INFO L175 Difference]: Start difference. First operand has 277 places, 243 transitions, 2924 flow. Second operand 12 states and 119 transitions. [2024-06-27 19:20:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 260 transitions, 3698 flow [2024-06-27 19:20:01,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 260 transitions, 3536 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:01,032 INFO L231 Difference]: Finished difference. Result has 282 places, 245 transitions, 2881 flow [2024-06-27 19:20:01,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2881, PETRI_PLACES=282, PETRI_TRANSITIONS=245} [2024-06-27 19:20:01,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-27 19:20:01,033 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 245 transitions, 2881 flow [2024-06-27 19:20:01,033 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 19:20:01,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:01,033 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 19:20:01,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:20:01,033 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 19:20:01,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:01,034 INFO L85 PathProgramCache]: Analyzing trace with hash -510417131, now seen corresponding path program 11 times [2024-06-27 19:20:01,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:01,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026163355] [2024-06-27 19:20:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:01,928 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 19:20:01,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:01,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026163355] [2024-06-27 19:20:01,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026163355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:01,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:01,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:01,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278165085] [2024-06-27 19:20:01,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:01,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:01,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:02,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:02,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 245 transitions, 2881 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 19:20:02,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:02,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:02,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:02,467 INFO L124 PetriNetUnfolderBase]: 705/1251 cut-off events. [2024-06-27 19:20:02,467 INFO L125 PetriNetUnfolderBase]: For 113633/113635 co-relation queries the response was YES. [2024-06-27 19:20:02,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8989 conditions, 1251 events. 705/1251 cut-off events. For 113633/113635 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6505 event pairs, 106 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 8860. Up to 1075 conditions per place. [2024-06-27 19:20:02,478 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 210 selfloop transitions, 48 changer transitions 0/260 dead transitions. [2024-06-27 19:20:02,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 260 transitions, 3447 flow [2024-06-27 19:20:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:20:02,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 19:20:02,479 INFO L175 Difference]: Start difference. First operand has 282 places, 245 transitions, 2881 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:20:02,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 260 transitions, 3447 flow [2024-06-27 19:20:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 260 transitions, 3349 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-27 19:20:02,840 INFO L231 Difference]: Finished difference. Result has 279 places, 245 transitions, 2885 flow [2024-06-27 19:20:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2885, PETRI_PLACES=279, PETRI_TRANSITIONS=245} [2024-06-27 19:20:02,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-27 19:20:02,841 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 245 transitions, 2885 flow [2024-06-27 19:20:02,841 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 19:20:02,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:02,841 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 19:20:02,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:20:02,841 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 19:20:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash -515773559, now seen corresponding path program 12 times [2024-06-27 19:20:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758212882] [2024-06-27 19:20:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758212882] [2024-06-27 19:20:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758212882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594668343] [2024-06-27 19:20:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:03,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:03,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:03,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 245 transitions, 2885 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 19:20:03,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:03,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:03,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:04,391 INFO L124 PetriNetUnfolderBase]: 711/1261 cut-off events. [2024-06-27 19:20:04,392 INFO L125 PetriNetUnfolderBase]: For 116503/116505 co-relation queries the response was YES. [2024-06-27 19:20:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9158 conditions, 1261 events. 711/1261 cut-off events. For 116503/116505 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6590 event pairs, 115 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 9030. Up to 1102 conditions per place. [2024-06-27 19:20:04,400 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 43 changer transitions 0/262 dead transitions. [2024-06-27 19:20:04,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 262 transitions, 3517 flow [2024-06-27 19:20:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:20:04,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:20:04,401 INFO L175 Difference]: Start difference. First operand has 279 places, 245 transitions, 2885 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:20:04,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 262 transitions, 3517 flow [2024-06-27 19:20:04,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 262 transitions, 3340 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:04,710 INFO L231 Difference]: Finished difference. Result has 281 places, 247 transitions, 2871 flow [2024-06-27 19:20:04,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2871, PETRI_PLACES=281, PETRI_TRANSITIONS=247} [2024-06-27 19:20:04,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 19:20:04,710 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 247 transitions, 2871 flow [2024-06-27 19:20:04,710 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 19:20:04,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:04,711 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 19:20:04,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:20:04,711 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 19:20:04,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2029525971, now seen corresponding path program 3 times [2024-06-27 19:20:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:04,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263521058] [2024-06-27 19:20:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:04,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:05,501 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 19:20:05,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263521058] [2024-06-27 19:20:05,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263521058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:05,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:05,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228336254] [2024-06-27 19:20:05,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:05,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:05,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:05,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:05,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:05,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 247 transitions, 2871 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 19:20:05,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:05,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:05,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:05,948 INFO L124 PetriNetUnfolderBase]: 733/1302 cut-off events. [2024-06-27 19:20:05,948 INFO L125 PetriNetUnfolderBase]: For 138125/138125 co-relation queries the response was YES. [2024-06-27 19:20:05,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9574 conditions, 1302 events. 733/1302 cut-off events. For 138125/138125 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6861 event pairs, 172 based on Foata normal form. 4/1305 useless extension candidates. Maximal degree in co-relation 9445. Up to 1203 conditions per place. [2024-06-27 19:20:05,960 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 243 selfloop transitions, 20 changer transitions 0/265 dead transitions. [2024-06-27 19:20:05,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 265 transitions, 3667 flow [2024-06-27 19:20:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 19:20:05,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-27 19:20:05,961 INFO L175 Difference]: Start difference. First operand has 281 places, 247 transitions, 2871 flow. Second operand 10 states and 102 transitions. [2024-06-27 19:20:05,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 265 transitions, 3667 flow [2024-06-27 19:20:06,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 265 transitions, 3464 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-27 19:20:06,361 INFO L231 Difference]: Finished difference. Result has 281 places, 249 transitions, 2754 flow [2024-06-27 19:20:06,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2754, PETRI_PLACES=281, PETRI_TRANSITIONS=249} [2024-06-27 19:20:06,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 19:20:06,361 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 249 transitions, 2754 flow [2024-06-27 19:20:06,361 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 19:20:06,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:06,361 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 19:20:06,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:20:06,362 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 19:20:06,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash -193269251, now seen corresponding path program 13 times [2024-06-27 19:20:06,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:06,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976334914] [2024-06-27 19:20:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:06,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:07,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:07,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976334914] [2024-06-27 19:20:07,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976334914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:07,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:07,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:07,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637673875] [2024-06-27 19:20:07,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:07,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:07,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:07,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:07,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:07,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 249 transitions, 2754 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 19:20:07,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:07,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:07,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:08,046 INFO L124 PetriNetUnfolderBase]: 735/1306 cut-off events. [2024-06-27 19:20:08,046 INFO L125 PetriNetUnfolderBase]: For 133241/133241 co-relation queries the response was YES. [2024-06-27 19:20:08,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9226 conditions, 1306 events. 735/1306 cut-off events. For 133241/133241 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6907 event pairs, 114 based on Foata normal form. 4/1309 useless extension candidates. Maximal degree in co-relation 9098. Up to 1111 conditions per place. [2024-06-27 19:20:08,056 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 54 changer transitions 0/268 dead transitions. [2024-06-27 19:20:08,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 268 transitions, 3414 flow [2024-06-27 19:20:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:20:08,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:20:08,057 INFO L175 Difference]: Start difference. First operand has 281 places, 249 transitions, 2754 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:20:08,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 268 transitions, 3414 flow [2024-06-27 19:20:08,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 268 transitions, 3334 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 19:20:08,412 INFO L231 Difference]: Finished difference. Result has 285 places, 251 transitions, 2864 flow [2024-06-27 19:20:08,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2864, PETRI_PLACES=285, PETRI_TRANSITIONS=251} [2024-06-27 19:20:08,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 19:20:08,413 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 251 transitions, 2864 flow [2024-06-27 19:20:08,413 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 19:20:08,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:08,413 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 19:20:08,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:20:08,413 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 19:20:08,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1941503547, now seen corresponding path program 4 times [2024-06-27 19:20:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:08,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124065653] [2024-06-27 19:20:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:08,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:09,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124065653] [2024-06-27 19:20:09,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124065653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:09,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:09,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934985728] [2024-06-27 19:20:09,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:09,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:09,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:09,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 251 transitions, 2864 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 19:20:09,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:09,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:09,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:09,688 INFO L124 PetriNetUnfolderBase]: 743/1323 cut-off events. [2024-06-27 19:20:09,688 INFO L125 PetriNetUnfolderBase]: For 137168/137170 co-relation queries the response was YES. [2024-06-27 19:20:09,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9402 conditions, 1323 events. 743/1323 cut-off events. For 137168/137170 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7044 event pairs, 136 based on Foata normal form. 4/1326 useless extension candidates. Maximal degree in co-relation 9272. Up to 1077 conditions per place. [2024-06-27 19:20:09,701 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 66 changer transitions 0/267 dead transitions. [2024-06-27 19:20:09,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 267 transitions, 3650 flow [2024-06-27 19:20:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:20:09,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:20:09,702 INFO L175 Difference]: Start difference. First operand has 285 places, 251 transitions, 2864 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:20:09,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 267 transitions, 3650 flow [2024-06-27 19:20:10,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 267 transitions, 3482 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:10,094 INFO L231 Difference]: Finished difference. Result has 287 places, 252 transitions, 2854 flow [2024-06-27 19:20:10,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2854, PETRI_PLACES=287, PETRI_TRANSITIONS=252} [2024-06-27 19:20:10,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-27 19:20:10,094 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 252 transitions, 2854 flow [2024-06-27 19:20:10,094 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 19:20:10,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:10,094 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 19:20:10,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:20:10,094 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 19:20:10,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash 926766619, now seen corresponding path program 5 times [2024-06-27 19:20:10,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:10,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225941161] [2024-06-27 19:20:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225941161] [2024-06-27 19:20:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225941161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134506840] [2024-06-27 19:20:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:11,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:11,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:11,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 252 transitions, 2854 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 19:20:11,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:11,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:11,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:11,787 INFO L124 PetriNetUnfolderBase]: 751/1338 cut-off events. [2024-06-27 19:20:11,787 INFO L125 PetriNetUnfolderBase]: For 139791/139791 co-relation queries the response was YES. [2024-06-27 19:20:11,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9441 conditions, 1338 events. 751/1338 cut-off events. For 139791/139791 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7131 event pairs, 183 based on Foata normal form. 4/1341 useless extension candidates. Maximal degree in co-relation 9310. Up to 1273 conditions per place. [2024-06-27 19:20:11,801 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 23 changer transitions 0/267 dead transitions. [2024-06-27 19:20:11,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 267 transitions, 3450 flow [2024-06-27 19:20:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 19:20:11,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-27 19:20:11,802 INFO L175 Difference]: Start difference. First operand has 287 places, 252 transitions, 2854 flow. Second operand 11 states and 109 transitions. [2024-06-27 19:20:11,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 267 transitions, 3450 flow [2024-06-27 19:20:12,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 267 transitions, 3302 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:12,247 INFO L231 Difference]: Finished difference. Result has 290 places, 253 transitions, 2775 flow [2024-06-27 19:20:12,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2775, PETRI_PLACES=290, PETRI_TRANSITIONS=253} [2024-06-27 19:20:12,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-27 19:20:12,247 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 253 transitions, 2775 flow [2024-06-27 19:20:12,248 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 19:20:12,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:12,248 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 19:20:12,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:20:12,248 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 19:20:12,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash -193060001, now seen corresponding path program 14 times [2024-06-27 19:20:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:12,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832759878] [2024-06-27 19:20:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:13,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832759878] [2024-06-27 19:20:13,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832759878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:13,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:13,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:13,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813094258] [2024-06-27 19:20:13,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:13,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:13,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 253 transitions, 2775 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 19:20:13,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:13,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:13,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:14,017 INFO L124 PetriNetUnfolderBase]: 767/1365 cut-off events. [2024-06-27 19:20:14,017 INFO L125 PetriNetUnfolderBase]: For 143152/143154 co-relation queries the response was YES. [2024-06-27 19:20:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9838 conditions, 1365 events. 767/1365 cut-off events. For 143152/143154 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7307 event pairs, 116 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 9706. Up to 1088 conditions per place. [2024-06-27 19:20:14,030 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 201 selfloop transitions, 74 changer transitions 0/277 dead transitions. [2024-06-27 19:20:14,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 277 transitions, 3729 flow [2024-06-27 19:20:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:20:14,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:20:14,031 INFO L175 Difference]: Start difference. First operand has 290 places, 253 transitions, 2775 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:20:14,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 277 transitions, 3729 flow [2024-06-27 19:20:14,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 277 transitions, 3674 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:14,487 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 3028 flow [2024-06-27 19:20:14,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3028, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2024-06-27 19:20:14,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-27 19:20:14,487 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 3028 flow [2024-06-27 19:20:14,487 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 19:20:14,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:14,488 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 19:20:14,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:20:14,488 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 19:20:14,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 602015579, now seen corresponding path program 15 times [2024-06-27 19:20:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588247188] [2024-06-27 19:20:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:15,397 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 19:20:15,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:15,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588247188] [2024-06-27 19:20:15,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588247188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:15,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:15,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688836492] [2024-06-27 19:20:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:15,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:15,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 3028 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 19:20:15,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:15,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:15,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:16,120 INFO L124 PetriNetUnfolderBase]: 773/1375 cut-off events. [2024-06-27 19:20:16,120 INFO L125 PetriNetUnfolderBase]: For 147478/147480 co-relation queries the response was YES. [2024-06-27 19:20:16,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10160 conditions, 1375 events. 773/1375 cut-off events. For 147478/147480 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7339 event pairs, 77 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 10027. Up to 618 conditions per place. [2024-06-27 19:20:16,130 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 126 changer transitions 0/280 dead transitions. [2024-06-27 19:20:16,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 280 transitions, 4132 flow [2024-06-27 19:20:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:20:16,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:20:16,132 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 3028 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:20:16,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 280 transitions, 4132 flow [2024-06-27 19:20:16,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 280 transitions, 3963 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:16,555 INFO L231 Difference]: Finished difference. Result has 294 places, 260 transitions, 3240 flow [2024-06-27 19:20:16,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3240, PETRI_PLACES=294, PETRI_TRANSITIONS=260} [2024-06-27 19:20:16,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-27 19:20:16,556 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 260 transitions, 3240 flow [2024-06-27 19:20:16,556 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 19:20:16,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:16,556 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 19:20:16,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:20:16,557 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 19:20:16,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1940037425, now seen corresponding path program 16 times [2024-06-27 19:20:16,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:16,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727909806] [2024-06-27 19:20:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:17,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:17,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727909806] [2024-06-27 19:20:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727909806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:17,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:17,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:17,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291433117] [2024-06-27 19:20:17,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:17,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:17,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:17,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:17,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:17,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:17,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 260 transitions, 3240 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 19:20:17,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:17,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:17,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:18,298 INFO L124 PetriNetUnfolderBase]: 769/1369 cut-off events. [2024-06-27 19:20:18,298 INFO L125 PetriNetUnfolderBase]: For 138848/138850 co-relation queries the response was YES. [2024-06-27 19:20:18,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10064 conditions, 1369 events. 769/1369 cut-off events. For 138848/138850 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7343 event pairs, 83 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9930. Up to 980 conditions per place. [2024-06-27 19:20:18,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 103 changer transitions 0/278 dead transitions. [2024-06-27 19:20:18,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 278 transitions, 3862 flow [2024-06-27 19:20:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:20:18,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:20:18,313 INFO L175 Difference]: Start difference. First operand has 294 places, 260 transitions, 3240 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:20:18,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 278 transitions, 3862 flow [2024-06-27 19:20:18,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 278 transitions, 3559 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-27 19:20:18,761 INFO L231 Difference]: Finished difference. Result has 298 places, 260 transitions, 3148 flow [2024-06-27 19:20:18,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3148, PETRI_PLACES=298, PETRI_TRANSITIONS=260} [2024-06-27 19:20:18,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-27 19:20:18,762 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 260 transitions, 3148 flow [2024-06-27 19:20:18,762 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 19:20:18,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:18,762 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 19:20:18,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:20:18,762 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 19:20:18,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2040953811, now seen corresponding path program 6 times [2024-06-27 19:20:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19003483] [2024-06-27 19:20:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19003483] [2024-06-27 19:20:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19003483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333087049] [2024-06-27 19:20:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:19,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:19,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 260 transitions, 3148 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 19:20:19,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:19,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:19,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:20,382 INFO L124 PetriNetUnfolderBase]: 763/1358 cut-off events. [2024-06-27 19:20:20,382 INFO L125 PetriNetUnfolderBase]: For 133091/133091 co-relation queries the response was YES. [2024-06-27 19:20:20,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 1358 events. 763/1358 cut-off events. For 133091/133091 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7269 event pairs, 181 based on Foata normal form. 4/1361 useless extension candidates. Maximal degree in co-relation 9407. Up to 1255 conditions per place. [2024-06-27 19:20:20,395 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 25 changer transitions 0/274 dead transitions. [2024-06-27 19:20:20,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 274 transitions, 3742 flow [2024-06-27 19:20:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 19:20:20,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-27 19:20:20,396 INFO L175 Difference]: Start difference. First operand has 298 places, 260 transitions, 3148 flow. Second operand 11 states and 109 transitions. [2024-06-27 19:20:20,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 274 transitions, 3742 flow [2024-06-27 19:20:20,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 274 transitions, 3515 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:20,898 INFO L231 Difference]: Finished difference. Result has 300 places, 260 transitions, 2980 flow [2024-06-27 19:20:20,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2980, PETRI_PLACES=300, PETRI_TRANSITIONS=260} [2024-06-27 19:20:20,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-27 19:20:20,899 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 260 transitions, 2980 flow [2024-06-27 19:20:20,899 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 19:20:20,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:20,899 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 19:20:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:20:20,900 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 19:20:20,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash -193059722, now seen corresponding path program 2 times [2024-06-27 19:20:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357158115] [2024-06-27 19:20:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:22,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357158115] [2024-06-27 19:20:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357158115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:22,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648138631] [2024-06-27 19:20:22,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:22,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:22,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:22,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:22,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 260 transitions, 2980 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 19:20:22,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:22,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:22,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:23,595 INFO L124 PetriNetUnfolderBase]: 761/1355 cut-off events. [2024-06-27 19:20:23,595 INFO L125 PetriNetUnfolderBase]: For 118949/118949 co-relation queries the response was YES. [2024-06-27 19:20:23,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9207 conditions, 1355 events. 761/1355 cut-off events. For 118949/118949 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7273 event pairs, 168 based on Foata normal form. 1/1355 useless extension candidates. Maximal degree in co-relation 9071. Up to 1253 conditions per place. [2024-06-27 19:20:23,608 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 34 changer transitions 0/273 dead transitions. [2024-06-27 19:20:23,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 273 transitions, 3582 flow [2024-06-27 19:20:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:20:23,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:20:23,609 INFO L175 Difference]: Start difference. First operand has 300 places, 260 transitions, 2980 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:20:23,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 273 transitions, 3582 flow [2024-06-27 19:20:23,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 273 transitions, 3520 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:20:24,001 INFO L231 Difference]: Finished difference. Result has 298 places, 260 transitions, 2994 flow [2024-06-27 19:20:24,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2994, PETRI_PLACES=298, PETRI_TRANSITIONS=260} [2024-06-27 19:20:24,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-27 19:20:24,001 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 260 transitions, 2994 flow [2024-06-27 19:20:24,001 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 19:20:24,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:24,002 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 19:20:24,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:20:24,002 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 19:20:24,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:24,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1531356197, now seen corresponding path program 17 times [2024-06-27 19:20:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:24,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4979895] [2024-06-27 19:20:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:24,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4979895] [2024-06-27 19:20:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4979895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:26,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:26,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688945970] [2024-06-27 19:20:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:26,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:26,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 260 transitions, 2994 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 19:20:26,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:26,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:26,835 INFO L124 PetriNetUnfolderBase]: 757/1350 cut-off events. [2024-06-27 19:20:26,835 INFO L125 PetriNetUnfolderBase]: For 109454/109456 co-relation queries the response was YES. [2024-06-27 19:20:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 1350 events. 757/1350 cut-off events. For 109454/109456 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7255 event pairs, 115 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 8798. Up to 1123 conditions per place. [2024-06-27 19:20:26,848 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 62 changer transitions 0/278 dead transitions. [2024-06-27 19:20:26,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 278 transitions, 3614 flow [2024-06-27 19:20:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:20:26,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:20:26,849 INFO L175 Difference]: Start difference. First operand has 298 places, 260 transitions, 2994 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:20:26,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 278 transitions, 3614 flow [2024-06-27 19:20:27,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 278 transitions, 3384 flow, removed 33 selfloop flow, removed 12 redundant places. [2024-06-27 19:20:27,233 INFO L231 Difference]: Finished difference. Result has 296 places, 260 transitions, 2896 flow [2024-06-27 19:20:27,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2896, PETRI_PLACES=296, PETRI_TRANSITIONS=260} [2024-06-27 19:20:27,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-27 19:20:27,233 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 260 transitions, 2896 flow [2024-06-27 19:20:27,233 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 19:20:27,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:27,233 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 19:20:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:20:27,241 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 19:20:27,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash -308843289, now seen corresponding path program 7 times [2024-06-27 19:20:27,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:27,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829816430] [2024-06-27 19:20:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:27,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829816430] [2024-06-27 19:20:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829816430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:28,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:28,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399144752] [2024-06-27 19:20:28,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:28,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:28,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:28,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:28,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 260 transitions, 2896 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 19:20:28,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:28,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:28,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:28,757 INFO L124 PetriNetUnfolderBase]: 758/1353 cut-off events. [2024-06-27 19:20:28,757 INFO L125 PetriNetUnfolderBase]: For 109544/109546 co-relation queries the response was YES. [2024-06-27 19:20:28,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8722 conditions, 1353 events. 758/1353 cut-off events. For 109544/109546 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7250 event pairs, 166 based on Foata normal form. 4/1356 useless extension candidates. Maximal degree in co-relation 8588. Up to 1246 conditions per place. [2024-06-27 19:20:28,770 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 28 changer transitions 0/277 dead transitions. [2024-06-27 19:20:28,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 277 transitions, 3542 flow [2024-06-27 19:20:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:20:28,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-27 19:20:28,771 INFO L175 Difference]: Start difference. First operand has 296 places, 260 transitions, 2896 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:20:28,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 277 transitions, 3542 flow [2024-06-27 19:20:29,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 277 transitions, 3384 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 19:20:29,099 INFO L231 Difference]: Finished difference. Result has 297 places, 261 transitions, 2822 flow [2024-06-27 19:20:29,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2822, PETRI_PLACES=297, PETRI_TRANSITIONS=261} [2024-06-27 19:20:29,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-27 19:20:29,099 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 261 transitions, 2822 flow [2024-06-27 19:20:29,099 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 19:20:29,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:29,100 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 19:20:29,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:20:29,100 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 19:20:29,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:29,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2121074313, now seen corresponding path program 1 times [2024-06-27 19:20:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:29,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814030699] [2024-06-27 19:20:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814030699] [2024-06-27 19:20:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814030699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:30,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891449640] [2024-06-27 19:20:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:30,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:30,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 261 transitions, 2822 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:30,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:30,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:30,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:30,763 INFO L124 PetriNetUnfolderBase]: 762/1360 cut-off events. [2024-06-27 19:20:30,763 INFO L125 PetriNetUnfolderBase]: For 100250/100250 co-relation queries the response was YES. [2024-06-27 19:20:30,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 1360 events. 762/1360 cut-off events. For 100250/100250 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7299 event pairs, 136 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 8494. Up to 1189 conditions per place. [2024-06-27 19:20:30,776 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 48 changer transitions 0/279 dead transitions. [2024-06-27 19:20:30,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 279 transitions, 3438 flow [2024-06-27 19:20:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:20:30,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:20:30,779 INFO L175 Difference]: Start difference. First operand has 297 places, 261 transitions, 2822 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:20:30,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 279 transitions, 3438 flow [2024-06-27 19:20:31,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 279 transitions, 3364 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:31,112 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 2869 flow [2024-06-27 19:20:31,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2869, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-27 19:20:31,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-27 19:20:31,112 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 2869 flow [2024-06-27 19:20:31,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:31,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:31,113 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 19:20:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:20:31,113 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 19:20:31,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1866229379, now seen corresponding path program 2 times [2024-06-27 19:20:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82855170] [2024-06-27 19:20:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:31,964 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 19:20:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82855170] [2024-06-27 19:20:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82855170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:31,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066148678] [2024-06-27 19:20:31,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:31,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:32,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:32,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 2869 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 19:20:32,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:32,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:32,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:32,470 INFO L124 PetriNetUnfolderBase]: 766/1368 cut-off events. [2024-06-27 19:20:32,470 INFO L125 PetriNetUnfolderBase]: For 102575/102575 co-relation queries the response was YES. [2024-06-27 19:20:32,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8734 conditions, 1368 events. 766/1368 cut-off events. For 102575/102575 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7337 event pairs, 136 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 8599. Up to 1216 conditions per place. [2024-06-27 19:20:32,483 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 41 changer transitions 0/280 dead transitions. [2024-06-27 19:20:32,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 280 transitions, 3487 flow [2024-06-27 19:20:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:20:32,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:20:32,484 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 2869 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:20:32,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 280 transitions, 3487 flow [2024-06-27 19:20:32,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 280 transitions, 3382 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:32,776 INFO L231 Difference]: Finished difference. Result has 300 places, 263 transitions, 2870 flow [2024-06-27 19:20:32,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=300, PETRI_TRANSITIONS=263} [2024-06-27 19:20:32,776 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-27 19:20:32,776 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 263 transitions, 2870 flow [2024-06-27 19:20:32,776 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 19:20:32,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:32,777 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 19:20:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:20:32,777 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 19:20:32,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1866344699, now seen corresponding path program 3 times [2024-06-27 19:20:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:32,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255459027] [2024-06-27 19:20:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:33,702 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 19:20:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255459027] [2024-06-27 19:20:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255459027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:33,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:33,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229499046] [2024-06-27 19:20:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:33,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:33,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:33,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 263 transitions, 2870 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:33,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:33,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:33,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:34,276 INFO L124 PetriNetUnfolderBase]: 770/1376 cut-off events. [2024-06-27 19:20:34,276 INFO L125 PetriNetUnfolderBase]: For 104844/104844 co-relation queries the response was YES. [2024-06-27 19:20:34,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8782 conditions, 1376 events. 770/1376 cut-off events. For 104844/104844 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7408 event pairs, 137 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 8646. Up to 1227 conditions per place. [2024-06-27 19:20:34,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 243 selfloop transitions, 36 changer transitions 0/281 dead transitions. [2024-06-27 19:20:34,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 281 transitions, 3490 flow [2024-06-27 19:20:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:20:34,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:20:34,291 INFO L175 Difference]: Start difference. First operand has 300 places, 263 transitions, 2870 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:20:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 281 transitions, 3490 flow [2024-06-27 19:20:34,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 281 transitions, 3394 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:34,616 INFO L231 Difference]: Finished difference. Result has 302 places, 264 transitions, 2872 flow [2024-06-27 19:20:34,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2872, PETRI_PLACES=302, PETRI_TRANSITIONS=264} [2024-06-27 19:20:34,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-27 19:20:34,616 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 264 transitions, 2872 flow [2024-06-27 19:20:34,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:34,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:34,617 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 19:20:34,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:20:34,617 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 19:20:34,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1924437149, now seen corresponding path program 4 times [2024-06-27 19:20:34,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:34,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220253917] [2024-06-27 19:20:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:34,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:35,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220253917] [2024-06-27 19:20:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220253917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:35,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:35,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093873744] [2024-06-27 19:20:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:35,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:35,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:35,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 264 transitions, 2872 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:35,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:35,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:35,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:36,108 INFO L124 PetriNetUnfolderBase]: 774/1384 cut-off events. [2024-06-27 19:20:36,108 INFO L125 PetriNetUnfolderBase]: For 105504/105504 co-relation queries the response was YES. [2024-06-27 19:20:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8834 conditions, 1384 events. 774/1384 cut-off events. For 105504/105504 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7428 event pairs, 116 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 8697. Up to 1154 conditions per place. [2024-06-27 19:20:36,121 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 238 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-06-27 19:20:36,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 284 transitions, 3504 flow [2024-06-27 19:20:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:20:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-27 19:20:36,122 INFO L175 Difference]: Start difference. First operand has 302 places, 264 transitions, 2872 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:20:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 284 transitions, 3504 flow [2024-06-27 19:20:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 284 transitions, 3416 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:36,416 INFO L231 Difference]: Finished difference. Result has 305 places, 265 transitions, 2900 flow [2024-06-27 19:20:36,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=305, PETRI_TRANSITIONS=265} [2024-06-27 19:20:36,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-27 19:20:36,417 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 265 transitions, 2900 flow [2024-06-27 19:20:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:36,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:36,417 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 19:20:36,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:20:36,417 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 19:20:36,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1536791203, now seen corresponding path program 1 times [2024-06-27 19:20:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448186282] [2024-06-27 19:20:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:37,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:37,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448186282] [2024-06-27 19:20:37,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448186282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:37,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994173633] [2024-06-27 19:20:37,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:37,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:37,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:37,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:37,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 265 transitions, 2900 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:37,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:37,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:37,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:38,425 INFO L124 PetriNetUnfolderBase]: 772/1381 cut-off events. [2024-06-27 19:20:38,425 INFO L125 PetriNetUnfolderBase]: For 100933/100933 co-relation queries the response was YES. [2024-06-27 19:20:38,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8743 conditions, 1381 events. 772/1381 cut-off events. For 100933/100933 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7458 event pairs, 139 based on Foata normal form. 1/1381 useless extension candidates. Maximal degree in co-relation 8605. Up to 1203 conditions per place. [2024-06-27 19:20:38,438 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 51 changer transitions 0/282 dead transitions. [2024-06-27 19:20:38,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 282 transitions, 3508 flow [2024-06-27 19:20:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:20:38,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:20:38,439 INFO L175 Difference]: Start difference. First operand has 305 places, 265 transitions, 2900 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:20:38,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 282 transitions, 3508 flow [2024-06-27 19:20:38,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 282 transitions, 3374 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:38,772 INFO L231 Difference]: Finished difference. Result has 306 places, 265 transitions, 2878 flow [2024-06-27 19:20:38,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2878, PETRI_PLACES=306, PETRI_TRANSITIONS=265} [2024-06-27 19:20:38,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-27 19:20:38,773 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 265 transitions, 2878 flow [2024-06-27 19:20:38,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:38,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:38,773 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 19:20:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:20:38,773 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 19:20:38,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 825869955, now seen corresponding path program 1 times [2024-06-27 19:20:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936308336] [2024-06-27 19:20:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:40,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936308336] [2024-06-27 19:20:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936308336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:40,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:40,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:40,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948795895] [2024-06-27 19:20:40,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:40,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:40,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:40,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 265 transitions, 2878 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:40,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:40,923 INFO L124 PetriNetUnfolderBase]: 768/1375 cut-off events. [2024-06-27 19:20:40,924 INFO L125 PetriNetUnfolderBase]: For 98316/98316 co-relation queries the response was YES. [2024-06-27 19:20:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8492 conditions, 1375 events. 768/1375 cut-off events. For 98316/98316 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7417 event pairs, 136 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 8353. Up to 1211 conditions per place. [2024-06-27 19:20:40,937 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 238 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-06-27 19:20:40,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 284 transitions, 3496 flow [2024-06-27 19:20:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:40,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:20:40,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:20:40,938 INFO L175 Difference]: Start difference. First operand has 306 places, 265 transitions, 2878 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:20:40,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 284 transitions, 3496 flow [2024-06-27 19:20:41,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 284 transitions, 3319 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 19:20:41,245 INFO L231 Difference]: Finished difference. Result has 307 places, 265 transitions, 2794 flow [2024-06-27 19:20:41,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2794, PETRI_PLACES=307, PETRI_TRANSITIONS=265} [2024-06-27 19:20:41,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-27 19:20:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 265 transitions, 2794 flow [2024-06-27 19:20:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:41,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:41,246 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 19:20:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:20:41,246 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 19:20:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 124017575, now seen corresponding path program 5 times [2024-06-27 19:20:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100799792] [2024-06-27 19:20:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:42,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:42,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100799792] [2024-06-27 19:20:42,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100799792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:42,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:42,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385712103] [2024-06-27 19:20:42,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:42,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:42,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:42,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 265 transitions, 2794 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:42,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:42,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:42,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:42,925 INFO L124 PetriNetUnfolderBase]: 772/1383 cut-off events. [2024-06-27 19:20:42,925 INFO L125 PetriNetUnfolderBase]: For 101762/101762 co-relation queries the response was YES. [2024-06-27 19:20:42,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8487 conditions, 1383 events. 772/1383 cut-off events. For 101762/101762 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7493 event pairs, 109 based on Foata normal form. 2/1384 useless extension candidates. Maximal degree in co-relation 8347. Up to 1125 conditions per place. [2024-06-27 19:20:42,939 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 213 selfloop transitions, 70 changer transitions 0/285 dead transitions. [2024-06-27 19:20:42,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 285 transitions, 3452 flow [2024-06-27 19:20:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:20:42,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:20:42,940 INFO L175 Difference]: Start difference. First operand has 307 places, 265 transitions, 2794 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:20:42,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 285 transitions, 3452 flow [2024-06-27 19:20:43,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 285 transitions, 3351 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:20:43,237 INFO L231 Difference]: Finished difference. Result has 307 places, 266 transitions, 2863 flow [2024-06-27 19:20:43,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2863, PETRI_PLACES=307, PETRI_TRANSITIONS=266} [2024-06-27 19:20:43,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-27 19:20:43,237 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 266 transitions, 2863 flow [2024-06-27 19:20:43,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:43,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:43,238 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 19:20:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:20:43,238 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 19:20:43,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:43,238 INFO L85 PathProgramCache]: Analyzing trace with hash -447190967, now seen corresponding path program 1 times [2024-06-27 19:20:43,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:43,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586694312] [2024-06-27 19:20:43,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:43,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586694312] [2024-06-27 19:20:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586694312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:44,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038135877] [2024-06-27 19:20:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:44,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:44,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:45,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:45,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 266 transitions, 2863 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:45,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:45,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:45,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:45,710 INFO L124 PetriNetUnfolderBase]: 776/1391 cut-off events. [2024-06-27 19:20:45,710 INFO L125 PetriNetUnfolderBase]: For 104514/104514 co-relation queries the response was YES. [2024-06-27 19:20:45,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 1391 events. 776/1391 cut-off events. For 104514/104514 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7587 event pairs, 161 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 8487. Up to 1267 conditions per place. [2024-06-27 19:20:45,724 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 246 selfloop transitions, 37 changer transitions 0/285 dead transitions. [2024-06-27 19:20:45,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 285 transitions, 3533 flow [2024-06-27 19:20:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:20:45,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:20:45,725 INFO L175 Difference]: Start difference. First operand has 307 places, 266 transitions, 2863 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:20:45,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 285 transitions, 3533 flow [2024-06-27 19:20:46,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 285 transitions, 3373 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:46,154 INFO L231 Difference]: Finished difference. Result has 310 places, 267 transitions, 2809 flow [2024-06-27 19:20:46,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2809, PETRI_PLACES=310, PETRI_TRANSITIONS=267} [2024-06-27 19:20:46,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-27 19:20:46,161 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 267 transitions, 2809 flow [2024-06-27 19:20:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:46,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:46,161 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 19:20:46,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:20:46,162 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 19:20:46,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:46,162 INFO L85 PathProgramCache]: Analyzing trace with hash 117588485, now seen corresponding path program 6 times [2024-06-27 19:20:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:46,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185672002] [2024-06-27 19:20:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:47,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185672002] [2024-06-27 19:20:47,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185672002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:47,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:47,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376713911] [2024-06-27 19:20:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:47,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:47,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 267 transitions, 2809 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:47,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:47,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:47,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:47,825 INFO L124 PetriNetUnfolderBase]: 780/1399 cut-off events. [2024-06-27 19:20:47,825 INFO L125 PetriNetUnfolderBase]: For 106296/106296 co-relation queries the response was YES. [2024-06-27 19:20:47,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8586 conditions, 1399 events. 780/1399 cut-off events. For 106296/106296 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7612 event pairs, 113 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 8444. Up to 1195 conditions per place. [2024-06-27 19:20:47,838 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 56 changer transitions 0/286 dead transitions. [2024-06-27 19:20:47,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 286 transitions, 3461 flow [2024-06-27 19:20:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:20:47,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:20:47,839 INFO L175 Difference]: Start difference. First operand has 310 places, 267 transitions, 2809 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:20:47,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 286 transitions, 3461 flow [2024-06-27 19:20:48,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 286 transitions, 3361 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:48,144 INFO L231 Difference]: Finished difference. Result has 311 places, 268 transitions, 2853 flow [2024-06-27 19:20:48,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2853, PETRI_PLACES=311, PETRI_TRANSITIONS=268} [2024-06-27 19:20:48,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-27 19:20:48,144 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 268 transitions, 2853 flow [2024-06-27 19:20:48,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:48,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:48,144 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 19:20:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:20:48,145 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 19:20:48,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2061218055, now seen corresponding path program 2 times [2024-06-27 19:20:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:48,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529713337] [2024-06-27 19:20:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:49,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529713337] [2024-06-27 19:20:49,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529713337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:49,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:49,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:49,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920108150] [2024-06-27 19:20:49,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:49,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:49,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:49,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 268 transitions, 2853 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:49,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:49,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:49,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:50,427 INFO L124 PetriNetUnfolderBase]: 796/1425 cut-off events. [2024-06-27 19:20:50,427 INFO L125 PetriNetUnfolderBase]: For 116569/116569 co-relation queries the response was YES. [2024-06-27 19:20:50,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9008 conditions, 1425 events. 796/1425 cut-off events. For 116569/116569 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7768 event pairs, 111 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 8865. Up to 1059 conditions per place. [2024-06-27 19:20:50,441 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 93 changer transitions 0/298 dead transitions. [2024-06-27 19:20:50,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 298 transitions, 3851 flow [2024-06-27 19:20:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:20:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:20:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 19:20:50,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:20:50,442 INFO L175 Difference]: Start difference. First operand has 311 places, 268 transitions, 2853 flow. Second operand 12 states and 138 transitions. [2024-06-27 19:20:50,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 298 transitions, 3851 flow [2024-06-27 19:20:50,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 298 transitions, 3717 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:50,819 INFO L231 Difference]: Finished difference. Result has 315 places, 272 transitions, 3024 flow [2024-06-27 19:20:50,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3024, PETRI_PLACES=315, PETRI_TRANSITIONS=272} [2024-06-27 19:20:50,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-27 19:20:50,819 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 272 transitions, 3024 flow [2024-06-27 19:20:50,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:50,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:50,820 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 19:20:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:20:50,820 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 19:20:50,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash 497407417, now seen corresponding path program 7 times [2024-06-27 19:20:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354336426] [2024-06-27 19:20:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:52,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354336426] [2024-06-27 19:20:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354336426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:52,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:52,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:52,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134871060] [2024-06-27 19:20:52,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:52,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:52,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:52,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:52,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 272 transitions, 3024 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:52,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:52,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:52,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:52,684 INFO L124 PetriNetUnfolderBase]: 840/1501 cut-off events. [2024-06-27 19:20:52,684 INFO L125 PetriNetUnfolderBase]: For 119424/119424 co-relation queries the response was YES. [2024-06-27 19:20:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9543 conditions, 1501 events. 840/1501 cut-off events. For 119424/119424 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8311 event pairs, 120 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 9399. Up to 1307 conditions per place. [2024-06-27 19:20:52,696 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 53 changer transitions 0/311 dead transitions. [2024-06-27 19:20:52,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 311 transitions, 3923 flow [2024-06-27 19:20:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:20:52,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:20:52,697 INFO L175 Difference]: Start difference. First operand has 315 places, 272 transitions, 3024 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:20:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 311 transitions, 3923 flow [2024-06-27 19:20:53,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 311 transitions, 3673 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:53,157 INFO L231 Difference]: Finished difference. Result has 320 places, 288 transitions, 3118 flow [2024-06-27 19:20:53,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3118, PETRI_PLACES=320, PETRI_TRANSITIONS=288} [2024-06-27 19:20:53,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:20:53,158 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 288 transitions, 3118 flow [2024-06-27 19:20:53,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:53,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:53,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:53,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:20:53,158 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 19:20:53,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2054722935, now seen corresponding path program 3 times [2024-06-27 19:20:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934196654] [2024-06-27 19:20:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:54,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934196654] [2024-06-27 19:20:54,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934196654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:54,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:54,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811444447] [2024-06-27 19:20:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:54,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:54,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:54,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:55,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:55,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 288 transitions, 3118 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:55,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:55,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:55,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:55,807 INFO L124 PetriNetUnfolderBase]: 846/1511 cut-off events. [2024-06-27 19:20:55,808 INFO L125 PetriNetUnfolderBase]: For 121155/121155 co-relation queries the response was YES. [2024-06-27 19:20:55,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 1511 events. 846/1511 cut-off events. For 121155/121155 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8366 event pairs, 113 based on Foata normal form. 2/1512 useless extension candidates. Maximal degree in co-relation 9368. Up to 1257 conditions per place. [2024-06-27 19:20:55,822 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 73 changer transitions 0/310 dead transitions. [2024-06-27 19:20:55,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 310 transitions, 3848 flow [2024-06-27 19:20:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:20:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:20:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:20:55,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:20:55,823 INFO L175 Difference]: Start difference. First operand has 320 places, 288 transitions, 3118 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:20:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 310 transitions, 3848 flow [2024-06-27 19:20:56,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 310 transitions, 3770 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:20:56,239 INFO L231 Difference]: Finished difference. Result has 327 places, 290 transitions, 3243 flow [2024-06-27 19:20:56,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3040, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3243, PETRI_PLACES=327, PETRI_TRANSITIONS=290} [2024-06-27 19:20:56,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-27 19:20:56,239 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 290 transitions, 3243 flow [2024-06-27 19:20:56,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:56,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:56,239 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 19:20:56,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:20:56,240 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 19:20:56,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash 124024519, now seen corresponding path program 4 times [2024-06-27 19:20:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:56,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126788967] [2024-06-27 19:20:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:58,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:58,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126788967] [2024-06-27 19:20:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126788967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:58,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:20:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442819767] [2024-06-27 19:20:58,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:58,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:20:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:20:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:20:59,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:59,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 290 transitions, 3243 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:20:59,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:59,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:59,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:59,721 INFO L124 PetriNetUnfolderBase]: 852/1521 cut-off events. [2024-06-27 19:20:59,721 INFO L125 PetriNetUnfolderBase]: For 123933/123933 co-relation queries the response was YES. [2024-06-27 19:20:59,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9676 conditions, 1521 events. 852/1521 cut-off events. For 123933/123933 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8388 event pairs, 111 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 9527. Up to 1095 conditions per place. [2024-06-27 19:20:59,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 95 changer transitions 0/312 dead transitions. [2024-06-27 19:20:59,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 312 transitions, 4187 flow [2024-06-27 19:20:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 19:20:59,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-27 19:20:59,738 INFO L175 Difference]: Start difference. First operand has 327 places, 290 transitions, 3243 flow. Second operand 10 states and 121 transitions. [2024-06-27 19:20:59,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 312 transitions, 4187 flow [2024-06-27 19:21:00,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 312 transitions, 4010 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:00,183 INFO L231 Difference]: Finished difference. Result has 328 places, 292 transitions, 3314 flow [2024-06-27 19:21:00,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3314, PETRI_PLACES=328, PETRI_TRANSITIONS=292} [2024-06-27 19:21:00,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-27 19:21:00,184 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 292 transitions, 3314 flow [2024-06-27 19:21:00,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:00,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:00,184 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 19:21:00,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:21:00,184 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 19:21:00,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash -53113945, now seen corresponding path program 8 times [2024-06-27 19:21:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:00,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287577552] [2024-06-27 19:21:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:00,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287577552] [2024-06-27 19:21:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287577552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:01,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:01,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580243258] [2024-06-27 19:21:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:01,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:01,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 292 transitions, 3314 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:01,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:01,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:01,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:01,737 INFO L124 PetriNetUnfolderBase]: 856/1529 cut-off events. [2024-06-27 19:21:01,737 INFO L125 PetriNetUnfolderBase]: For 126651/126651 co-relation queries the response was YES. [2024-06-27 19:21:01,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9798 conditions, 1529 events. 856/1529 cut-off events. For 126651/126651 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8480 event pairs, 133 based on Foata normal form. 2/1530 useless extension candidates. Maximal degree in co-relation 9648. Up to 1351 conditions per place. [2024-06-27 19:21:01,752 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 49 changer transitions 0/309 dead transitions. [2024-06-27 19:21:01,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 309 transitions, 4002 flow [2024-06-27 19:21:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:21:01,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:21:01,753 INFO L175 Difference]: Start difference. First operand has 328 places, 292 transitions, 3314 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:21:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 309 transitions, 4002 flow [2024-06-27 19:21:02,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 309 transitions, 3810 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:02,226 INFO L231 Difference]: Finished difference. Result has 330 places, 293 transitions, 3256 flow [2024-06-27 19:21:02,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3256, PETRI_PLACES=330, PETRI_TRANSITIONS=293} [2024-06-27 19:21:02,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-27 19:21:02,227 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 293 transitions, 3256 flow [2024-06-27 19:21:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:02,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:02,227 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 19:21:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:21:02,228 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 19:21:02,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -53118595, now seen corresponding path program 9 times [2024-06-27 19:21:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318461036] [2024-06-27 19:21:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:03,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:03,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318461036] [2024-06-27 19:21:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318461036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:03,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:03,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:03,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470748492] [2024-06-27 19:21:03,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:03,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:03,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:03,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 293 transitions, 3256 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:03,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:03,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:03,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:03,864 INFO L124 PetriNetUnfolderBase]: 860/1537 cut-off events. [2024-06-27 19:21:03,864 INFO L125 PetriNetUnfolderBase]: For 126546/126546 co-relation queries the response was YES. [2024-06-27 19:21:03,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9763 conditions, 1537 events. 860/1537 cut-off events. For 126546/126546 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8552 event pairs, 133 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 9613. Up to 1361 conditions per place. [2024-06-27 19:21:03,879 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 260 selfloop transitions, 48 changer transitions 0/310 dead transitions. [2024-06-27 19:21:03,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 310 transitions, 3946 flow [2024-06-27 19:21:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:21:03,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:21:03,880 INFO L175 Difference]: Start difference. First operand has 330 places, 293 transitions, 3256 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:21:03,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 310 transitions, 3946 flow [2024-06-27 19:21:04,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 310 transitions, 3822 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:04,326 INFO L231 Difference]: Finished difference. Result has 332 places, 294 transitions, 3266 flow [2024-06-27 19:21:04,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3266, PETRI_PLACES=332, PETRI_TRANSITIONS=294} [2024-06-27 19:21:04,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-27 19:21:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 294 transitions, 3266 flow [2024-06-27 19:21:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:04,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:04,327 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 19:21:04,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:21:04,327 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 19:21:04,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -48465371, now seen corresponding path program 5 times [2024-06-27 19:21:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:04,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431369491] [2024-06-27 19:21:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:04,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:05,737 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 19:21:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:05,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431369491] [2024-06-27 19:21:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431369491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:05,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:05,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840075055] [2024-06-27 19:21:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:05,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:05,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:05,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 294 transitions, 3266 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:05,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:05,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:06,369 INFO L124 PetriNetUnfolderBase]: 861/1539 cut-off events. [2024-06-27 19:21:06,369 INFO L125 PetriNetUnfolderBase]: For 123801/123801 co-relation queries the response was YES. [2024-06-27 19:21:06,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9681 conditions, 1539 events. 861/1539 cut-off events. For 123801/123801 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8564 event pairs, 135 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 9530. Up to 1351 conditions per place. [2024-06-27 19:21:06,384 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 260 selfloop transitions, 52 changer transitions 0/314 dead transitions. [2024-06-27 19:21:06,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 314 transitions, 3996 flow [2024-06-27 19:21:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:21:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:21:06,385 INFO L175 Difference]: Start difference. First operand has 332 places, 294 transitions, 3266 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:21:06,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 314 transitions, 3996 flow [2024-06-27 19:21:06,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 314 transitions, 3872 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:06,823 INFO L231 Difference]: Finished difference. Result has 335 places, 296 transitions, 3309 flow [2024-06-27 19:21:06,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3309, PETRI_PLACES=335, PETRI_TRANSITIONS=296} [2024-06-27 19:21:06,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-27 19:21:06,824 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 296 transitions, 3309 flow [2024-06-27 19:21:06,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:06,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:06,824 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 19:21:06,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:21:06,824 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 19:21:06,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash -53233915, now seen corresponding path program 10 times [2024-06-27 19:21:06,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:06,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008339601] [2024-06-27 19:21:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:07,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008339601] [2024-06-27 19:21:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008339601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34156587] [2024-06-27 19:21:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:07,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:07,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:07,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 296 transitions, 3309 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:07,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:07,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:07,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:08,324 INFO L124 PetriNetUnfolderBase]: 865/1547 cut-off events. [2024-06-27 19:21:08,325 INFO L125 PetriNetUnfolderBase]: For 126378/126378 co-relation queries the response was YES. [2024-06-27 19:21:08,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 1547 events. 865/1547 cut-off events. For 126378/126378 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8622 event pairs, 131 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 9597. Up to 1379 conditions per place. [2024-06-27 19:21:08,342 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 266 selfloop transitions, 45 changer transitions 0/313 dead transitions. [2024-06-27 19:21:08,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 313 transitions, 4005 flow [2024-06-27 19:21:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:21:08,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:21:08,343 INFO L175 Difference]: Start difference. First operand has 335 places, 296 transitions, 3309 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:21:08,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 313 transitions, 4005 flow [2024-06-27 19:21:08,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 313 transitions, 3866 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:08,842 INFO L231 Difference]: Finished difference. Result has 336 places, 297 transitions, 3300 flow [2024-06-27 19:21:08,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3300, PETRI_PLACES=336, PETRI_TRANSITIONS=297} [2024-06-27 19:21:08,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-27 19:21:08,842 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 297 transitions, 3300 flow [2024-06-27 19:21:08,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:08,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:08,842 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 19:21:08,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:21:08,843 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 19:21:08,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1586302879, now seen corresponding path program 11 times [2024-06-27 19:21:08,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:08,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888500894] [2024-06-27 19:21:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:09,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:09,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888500894] [2024-06-27 19:21:09,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888500894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:09,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329028879] [2024-06-27 19:21:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:09,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:09,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 297 transitions, 3300 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:09,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:09,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:09,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:10,369 INFO L124 PetriNetUnfolderBase]: 869/1556 cut-off events. [2024-06-27 19:21:10,370 INFO L125 PetriNetUnfolderBase]: For 129345/129347 co-relation queries the response was YES. [2024-06-27 19:21:10,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9806 conditions, 1556 events. 869/1556 cut-off events. For 129345/129347 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8706 event pairs, 147 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 9653. Up to 1389 conditions per place. [2024-06-27 19:21:10,386 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 265 selfloop transitions, 46 changer transitions 0/313 dead transitions. [2024-06-27 19:21:10,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 313 transitions, 4000 flow [2024-06-27 19:21:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:21:10,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:21:10,387 INFO L175 Difference]: Start difference. First operand has 336 places, 297 transitions, 3300 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:21:10,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 313 transitions, 4000 flow [2024-06-27 19:21:10,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3880 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:10,981 INFO L231 Difference]: Finished difference. Result has 338 places, 298 transitions, 3314 flow [2024-06-27 19:21:10,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3314, PETRI_PLACES=338, PETRI_TRANSITIONS=298} [2024-06-27 19:21:10,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-27 19:21:10,981 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 298 transitions, 3314 flow [2024-06-27 19:21:10,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:10,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:10,982 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 19:21:10,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:21:10,982 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 19:21:10,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 687144803, now seen corresponding path program 6 times [2024-06-27 19:21:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:10,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595033505] [2024-06-27 19:21:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595033505] [2024-06-27 19:21:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595033505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:12,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005420561] [2024-06-27 19:21:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:12,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:12,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:12,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 298 transitions, 3314 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:12,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:12,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:13,316 INFO L124 PetriNetUnfolderBase]: 885/1582 cut-off events. [2024-06-27 19:21:13,316 INFO L125 PetriNetUnfolderBase]: For 143096/143098 co-relation queries the response was YES. [2024-06-27 19:21:13,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10184 conditions, 1582 events. 885/1582 cut-off events. For 143096/143098 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8836 event pairs, 97 based on Foata normal form. 2/1583 useless extension candidates. Maximal degree in co-relation 10030. Up to 1226 conditions per place. [2024-06-27 19:21:13,333 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 232 selfloop transitions, 89 changer transitions 0/323 dead transitions. [2024-06-27 19:21:13,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 323 transitions, 4360 flow [2024-06-27 19:21:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 19:21:13,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-27 19:21:13,334 INFO L175 Difference]: Start difference. First operand has 338 places, 298 transitions, 3314 flow. Second operand 10 states and 121 transitions. [2024-06-27 19:21:13,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 323 transitions, 4360 flow [2024-06-27 19:21:13,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 4236 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:13,935 INFO L231 Difference]: Finished difference. Result has 340 places, 302 transitions, 3483 flow [2024-06-27 19:21:13,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3483, PETRI_PLACES=340, PETRI_TRANSITIONS=302} [2024-06-27 19:21:13,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-27 19:21:13,936 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 302 transitions, 3483 flow [2024-06-27 19:21:13,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:13,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:13,936 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 19:21:13,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:21:13,936 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 19:21:13,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2145346923, now seen corresponding path program 12 times [2024-06-27 19:21:13,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:13,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940557476] [2024-06-27 19:21:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940557476] [2024-06-27 19:21:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940557476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:14,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:14,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867066715] [2024-06-27 19:21:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:15,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 302 transitions, 3483 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:15,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:15,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:15,592 INFO L124 PetriNetUnfolderBase]: 889/1590 cut-off events. [2024-06-27 19:21:15,592 INFO L125 PetriNetUnfolderBase]: For 146162/146164 co-relation queries the response was YES. [2024-06-27 19:21:15,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10372 conditions, 1590 events. 889/1590 cut-off events. For 146162/146164 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8917 event pairs, 100 based on Foata normal form. 2/1591 useless extension candidates. Maximal degree in co-relation 10217. Up to 1291 conditions per place. [2024-06-27 19:21:15,611 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 239 selfloop transitions, 81 changer transitions 0/322 dead transitions. [2024-06-27 19:21:15,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 322 transitions, 4237 flow [2024-06-27 19:21:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:21:15,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:21:15,612 INFO L175 Difference]: Start difference. First operand has 340 places, 302 transitions, 3483 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:21:15,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 322 transitions, 4237 flow [2024-06-27 19:21:16,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 322 transitions, 4071 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 19:21:16,163 INFO L231 Difference]: Finished difference. Result has 343 places, 303 transitions, 3523 flow [2024-06-27 19:21:16,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3523, PETRI_PLACES=343, PETRI_TRANSITIONS=303} [2024-06-27 19:21:16,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:21:16,163 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 303 transitions, 3523 flow [2024-06-27 19:21:16,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:16,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:16,164 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 19:21:16,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:21:16,164 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 19:21:16,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:16,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1482911363, now seen corresponding path program 7 times [2024-06-27 19:21:16,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:16,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326423160] [2024-06-27 19:21:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:16,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:17,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:17,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326423160] [2024-06-27 19:21:17,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326423160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:17,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:17,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:17,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847819019] [2024-06-27 19:21:17,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:17,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:17,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:17,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:17,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:17,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 303 transitions, 3523 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:17,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:17,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:18,024 INFO L124 PetriNetUnfolderBase]: 905/1616 cut-off events. [2024-06-27 19:21:18,024 INFO L125 PetriNetUnfolderBase]: For 157543/157545 co-relation queries the response was YES. [2024-06-27 19:21:18,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10868 conditions, 1616 events. 905/1616 cut-off events. For 157543/157545 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9080 event pairs, 89 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 10712. Up to 784 conditions per place. [2024-06-27 19:21:18,041 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 153 changer transitions 0/328 dead transitions. [2024-06-27 19:21:18,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 328 transitions, 4793 flow [2024-06-27 19:21:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:21:18,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:21:18,042 INFO L175 Difference]: Start difference. First operand has 343 places, 303 transitions, 3523 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:21:18,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 328 transitions, 4793 flow [2024-06-27 19:21:18,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 328 transitions, 4597 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:18,590 INFO L231 Difference]: Finished difference. Result has 345 places, 307 transitions, 3752 flow [2024-06-27 19:21:18,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3752, PETRI_PLACES=345, PETRI_TRANSITIONS=307} [2024-06-27 19:21:18,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-27 19:21:18,591 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 307 transitions, 3752 flow [2024-06-27 19:21:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:18,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:18,591 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 19:21:18,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:21:18,591 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 19:21:18,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1474333539, now seen corresponding path program 13 times [2024-06-27 19:21:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:18,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838713098] [2024-06-27 19:21:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:18,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:19,549 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 19:21:19,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:19,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838713098] [2024-06-27 19:21:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838713098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:19,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:19,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:19,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047350229] [2024-06-27 19:21:19,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:19,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:19,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:19,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 307 transitions, 3752 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 19:21:19,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:19,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:19,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:20,106 INFO L124 PetriNetUnfolderBase]: 909/1623 cut-off events. [2024-06-27 19:21:20,106 INFO L125 PetriNetUnfolderBase]: For 161368/161368 co-relation queries the response was YES. [2024-06-27 19:21:20,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11113 conditions, 1623 events. 909/1623 cut-off events. For 161368/161368 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9142 event pairs, 223 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 10956. Up to 1582 conditions per place. [2024-06-27 19:21:20,124 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 301 selfloop transitions, 17 changer transitions 0/320 dead transitions. [2024-06-27 19:21:20,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 320 transitions, 4459 flow [2024-06-27 19:21:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-27 19:21:20,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-27 19:21:20,125 INFO L175 Difference]: Start difference. First operand has 345 places, 307 transitions, 3752 flow. Second operand 10 states and 98 transitions. [2024-06-27 19:21:20,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 320 transitions, 4459 flow [2024-06-27 19:21:20,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 320 transitions, 4184 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 19:21:20,606 INFO L231 Difference]: Finished difference. Result has 348 places, 308 transitions, 3557 flow [2024-06-27 19:21:20,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3557, PETRI_PLACES=348, PETRI_TRANSITIONS=308} [2024-06-27 19:21:20,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-27 19:21:20,607 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 308 transitions, 3557 flow [2024-06-27 19:21:20,607 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 19:21:20,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:20,607 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 19:21:20,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:21:20,607 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 19:21:20,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 680469759, now seen corresponding path program 14 times [2024-06-27 19:21:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195702627] [2024-06-27 19:21:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:21,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195702627] [2024-06-27 19:21:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195702627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082968027] [2024-06-27 19:21:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:21,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:21,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 308 transitions, 3557 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 19:21:21,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:21,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:21,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:22,044 INFO L124 PetriNetUnfolderBase]: 913/1631 cut-off events. [2024-06-27 19:21:22,044 INFO L125 PetriNetUnfolderBase]: For 160897/160897 co-relation queries the response was YES. [2024-06-27 19:21:22,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 1631 events. 913/1631 cut-off events. For 160897/160897 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9172 event pairs, 98 based on Foata normal form. 2/1632 useless extension candidates. Maximal degree in co-relation 10687. Up to 1193 conditions per place. [2024-06-27 19:21:22,062 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 97 changer transitions 0/327 dead transitions. [2024-06-27 19:21:22,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 327 transitions, 4316 flow [2024-06-27 19:21:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:21:22,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:21:22,063 INFO L175 Difference]: Start difference. First operand has 348 places, 308 transitions, 3557 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:21:22,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 327 transitions, 4316 flow [2024-06-27 19:21:22,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 327 transitions, 4246 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:22,620 INFO L231 Difference]: Finished difference. Result has 350 places, 309 transitions, 3729 flow [2024-06-27 19:21:22,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=350, PETRI_TRANSITIONS=309} [2024-06-27 19:21:22,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-27 19:21:22,620 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 309 transitions, 3729 flow [2024-06-27 19:21:22,620 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 19:21:22,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:22,620 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 19:21:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:21:22,621 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 19:21:22,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash 908550833, now seen corresponding path program 8 times [2024-06-27 19:21:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462213804] [2024-06-27 19:21:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:24,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:24,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462213804] [2024-06-27 19:21:24,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462213804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:24,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:24,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024221681] [2024-06-27 19:21:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:24,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:24,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 309 transitions, 3729 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:24,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:24,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:24,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:25,077 INFO L124 PetriNetUnfolderBase]: 919/1642 cut-off events. [2024-06-27 19:21:25,077 INFO L125 PetriNetUnfolderBase]: For 163891/163893 co-relation queries the response was YES. [2024-06-27 19:21:25,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11091 conditions, 1642 events. 919/1642 cut-off events. For 163891/163893 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9255 event pairs, 101 based on Foata normal form. 2/1643 useless extension candidates. Maximal degree in co-relation 10933. Up to 1311 conditions per place. [2024-06-27 19:21:25,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 88 changer transitions 0/332 dead transitions. [2024-06-27 19:21:25,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 332 transitions, 4519 flow [2024-06-27 19:21:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:21:25,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 19:21:25,094 INFO L175 Difference]: Start difference. First operand has 350 places, 309 transitions, 3729 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:21:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 332 transitions, 4519 flow [2024-06-27 19:21:25,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 332 transitions, 4287 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:25,730 INFO L231 Difference]: Finished difference. Result has 353 places, 311 transitions, 3728 flow [2024-06-27 19:21:25,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=353, PETRI_TRANSITIONS=311} [2024-06-27 19:21:25,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-27 19:21:25,730 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 311 transitions, 3728 flow [2024-06-27 19:21:25,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:25,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:25,730 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 19:21:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:21:25,731 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 19:21:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1726705503, now seen corresponding path program 9 times [2024-06-27 19:21:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505586567] [2024-06-27 19:21:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:27,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:27,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505586567] [2024-06-27 19:21:27,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505586567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:27,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:27,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22396777] [2024-06-27 19:21:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:27,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:27,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:27,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:27,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:27,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:27,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 311 transitions, 3728 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:27,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:27,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:27,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:27,805 INFO L124 PetriNetUnfolderBase]: 915/1636 cut-off events. [2024-06-27 19:21:27,805 INFO L125 PetriNetUnfolderBase]: For 154219/154221 co-relation queries the response was YES. [2024-06-27 19:21:27,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10781 conditions, 1636 events. 915/1636 cut-off events. For 154219/154221 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9260 event pairs, 106 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 10622. Up to 1341 conditions per place. [2024-06-27 19:21:27,823 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 81 changer transitions 0/330 dead transitions. [2024-06-27 19:21:27,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 330 transitions, 4454 flow [2024-06-27 19:21:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:21:27,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:21:27,824 INFO L175 Difference]: Start difference. First operand has 353 places, 311 transitions, 3728 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:21:27,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 330 transitions, 4454 flow [2024-06-27 19:21:28,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 330 transitions, 4223 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:28,395 INFO L231 Difference]: Finished difference. Result has 355 places, 311 transitions, 3664 flow [2024-06-27 19:21:28,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3664, PETRI_PLACES=355, PETRI_TRANSITIONS=311} [2024-06-27 19:21:28,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-27 19:21:28,396 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 311 transitions, 3664 flow [2024-06-27 19:21:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:28,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:28,396 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 19:21:28,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:21:28,396 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 19:21:28,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1726890077, now seen corresponding path program 15 times [2024-06-27 19:21:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625837614] [2024-06-27 19:21:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625837614] [2024-06-27 19:21:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625837614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:29,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:29,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202823859] [2024-06-27 19:21:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:29,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:29,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:29,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:29,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 311 transitions, 3664 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:29,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:29,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:29,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:29,954 INFO L124 PetriNetUnfolderBase]: 919/1644 cut-off events. [2024-06-27 19:21:29,955 INFO L125 PetriNetUnfolderBase]: For 157299/157301 co-relation queries the response was YES. [2024-06-27 19:21:29,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10831 conditions, 1644 events. 919/1644 cut-off events. For 157299/157301 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9290 event pairs, 93 based on Foata normal form. 2/1645 useless extension candidates. Maximal degree in co-relation 10671. Up to 1191 conditions per place. [2024-06-27 19:21:29,973 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 99 changer transitions 0/330 dead transitions. [2024-06-27 19:21:29,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 330 transitions, 4429 flow [2024-06-27 19:21:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:21:29,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:21:29,974 INFO L175 Difference]: Start difference. First operand has 355 places, 311 transitions, 3664 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:21:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 330 transitions, 4429 flow [2024-06-27 19:21:30,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 330 transitions, 4252 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:21:30,566 INFO L231 Difference]: Finished difference. Result has 355 places, 312 transitions, 3735 flow [2024-06-27 19:21:30,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3735, PETRI_PLACES=355, PETRI_TRANSITIONS=312} [2024-06-27 19:21:30,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-27 19:21:30,566 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 312 transitions, 3735 flow [2024-06-27 19:21:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:30,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:30,567 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 19:21:30,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:21:30,567 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 19:21:30,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 980261125, now seen corresponding path program 10 times [2024-06-27 19:21:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599985705] [2024-06-27 19:21:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:31,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599985705] [2024-06-27 19:21:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599985705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:31,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:31,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070098366] [2024-06-27 19:21:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:31,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:31,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 312 transitions, 3735 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:31,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:31,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:31,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:32,405 INFO L124 PetriNetUnfolderBase]: 915/1637 cut-off events. [2024-06-27 19:21:32,405 INFO L125 PetriNetUnfolderBase]: For 147890/147890 co-relation queries the response was YES. [2024-06-27 19:21:32,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10634 conditions, 1637 events. 915/1637 cut-off events. For 147890/147890 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9291 event pairs, 223 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 10473. Up to 1566 conditions per place. [2024-06-27 19:21:32,420 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 27 changer transitions 0/327 dead transitions. [2024-06-27 19:21:32,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 327 transitions, 4432 flow [2024-06-27 19:21:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:21:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:21:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-27 19:21:32,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3004807692307692 [2024-06-27 19:21:32,421 INFO L175 Difference]: Start difference. First operand has 355 places, 312 transitions, 3735 flow. Second operand 13 states and 125 transitions. [2024-06-27 19:21:32,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 327 transitions, 4432 flow [2024-06-27 19:21:32,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 327 transitions, 4172 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:32,945 INFO L231 Difference]: Finished difference. Result has 360 places, 312 transitions, 3535 flow [2024-06-27 19:21:32,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3535, PETRI_PLACES=360, PETRI_TRANSITIONS=312} [2024-06-27 19:21:32,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-27 19:21:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 312 transitions, 3535 flow [2024-06-27 19:21:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:32,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:32,946 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 19:21:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:21:32,946 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 19:21:32,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash 27025023, now seen corresponding path program 16 times [2024-06-27 19:21:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409301436] [2024-06-27 19:21:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:34,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:34,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409301436] [2024-06-27 19:21:34,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409301436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:34,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130583555] [2024-06-27 19:21:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:34,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:34,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:34,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:34,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 312 transitions, 3535 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:34,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:34,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:34,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:34,709 INFO L124 PetriNetUnfolderBase]: 919/1646 cut-off events. [2024-06-27 19:21:34,709 INFO L125 PetriNetUnfolderBase]: For 149752/149752 co-relation queries the response was YES. [2024-06-27 19:21:34,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10468 conditions, 1646 events. 919/1646 cut-off events. For 149752/149752 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9324 event pairs, 140 based on Foata normal form. 2/1647 useless extension candidates. Maximal degree in co-relation 10306. Up to 1461 conditions per place. [2024-06-27 19:21:34,728 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 54 changer transitions 0/332 dead transitions. [2024-06-27 19:21:34,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 332 transitions, 4314 flow [2024-06-27 19:21:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:21:34,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:21:34,729 INFO L175 Difference]: Start difference. First operand has 360 places, 312 transitions, 3535 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:21:34,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 332 transitions, 4314 flow [2024-06-27 19:21:35,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 332 transitions, 4251 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:21:35,318 INFO L231 Difference]: Finished difference. Result has 359 places, 313 transitions, 3632 flow [2024-06-27 19:21:35,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3472, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3632, PETRI_PLACES=359, PETRI_TRANSITIONS=313} [2024-06-27 19:21:35,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-27 19:21:35,318 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 313 transitions, 3632 flow [2024-06-27 19:21:35,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:35,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:35,318 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 19:21:35,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:21:35,319 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 19:21:35,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -152052197, now seen corresponding path program 17 times [2024-06-27 19:21:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:35,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321040876] [2024-06-27 19:21:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:36,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321040876] [2024-06-27 19:21:36,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321040876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:36,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:36,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969807112] [2024-06-27 19:21:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:36,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:36,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 313 transitions, 3632 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:36,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:36,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:36,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:36,952 INFO L124 PetriNetUnfolderBase]: 923/1654 cut-off events. [2024-06-27 19:21:36,952 INFO L125 PetriNetUnfolderBase]: For 153409/153411 co-relation queries the response was YES. [2024-06-27 19:21:36,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10670 conditions, 1654 events. 923/1654 cut-off events. For 153409/153411 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9424 event pairs, 156 based on Foata normal form. 2/1655 useless extension candidates. Maximal degree in co-relation 10507. Up to 1487 conditions per place. [2024-06-27 19:21:36,971 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 45 changer transitions 0/329 dead transitions. [2024-06-27 19:21:36,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 329 transitions, 4374 flow [2024-06-27 19:21:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:21:36,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:21:36,972 INFO L175 Difference]: Start difference. First operand has 359 places, 313 transitions, 3632 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:21:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 329 transitions, 4374 flow [2024-06-27 19:21:37,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 329 transitions, 4220 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:37,441 INFO L231 Difference]: Finished difference. Result has 360 places, 314 transitions, 3622 flow [2024-06-27 19:21:37,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3622, PETRI_PLACES=360, PETRI_TRANSITIONS=314} [2024-06-27 19:21:37,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-27 19:21:37,441 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 314 transitions, 3622 flow [2024-06-27 19:21:37,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:37,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:37,442 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 19:21:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:21:37,442 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 19:21:37,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1474340483, now seen corresponding path program 11 times [2024-06-27 19:21:37,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:37,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273979200] [2024-06-27 19:21:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:38,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273979200] [2024-06-27 19:21:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273979200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:38,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:38,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:38,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524652429] [2024-06-27 19:21:38,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:38,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:38,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:38,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 314 transitions, 3622 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:38,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:38,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:38,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:39,203 INFO L124 PetriNetUnfolderBase]: 919/1648 cut-off events. [2024-06-27 19:21:39,203 INFO L125 PetriNetUnfolderBase]: For 142391/142393 co-relation queries the response was YES. [2024-06-27 19:21:39,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 1648 events. 919/1648 cut-off events. For 142391/142393 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9368 event pairs, 92 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 10166. Up to 821 conditions per place. [2024-06-27 19:21:39,222 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 156 changer transitions 0/334 dead transitions. [2024-06-27 19:21:39,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 334 transitions, 4586 flow [2024-06-27 19:21:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:21:39,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 19:21:39,223 INFO L175 Difference]: Start difference. First operand has 360 places, 314 transitions, 3622 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:21:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 334 transitions, 4586 flow [2024-06-27 19:21:39,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 334 transitions, 4424 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:39,815 INFO L231 Difference]: Finished difference. Result has 363 places, 314 transitions, 3777 flow [2024-06-27 19:21:39,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3777, PETRI_PLACES=363, PETRI_TRANSITIONS=314} [2024-06-27 19:21:39,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-27 19:21:39,816 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 314 transitions, 3777 flow [2024-06-27 19:21:39,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:39,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:39,816 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 19:21:39,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:21:39,816 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 19:21:39,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1489992501, now seen corresponding path program 12 times [2024-06-27 19:21:39,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:39,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432343702] [2024-06-27 19:21:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432343702] [2024-06-27 19:21:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432343702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273753562] [2024-06-27 19:21:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:41,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:41,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:41,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 314 transitions, 3777 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:41,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:41,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:42,195 INFO L124 PetriNetUnfolderBase]: 935/1674 cut-off events. [2024-06-27 19:21:42,195 INFO L125 PetriNetUnfolderBase]: For 158960/158962 co-relation queries the response was YES. [2024-06-27 19:21:42,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10992 conditions, 1674 events. 935/1674 cut-off events. For 158960/158962 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9555 event pairs, 144 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 10827. Up to 1432 conditions per place. [2024-06-27 19:21:42,215 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 59 changer transitions 0/337 dead transitions. [2024-06-27 19:21:42,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 337 transitions, 4877 flow [2024-06-27 19:21:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:21:42,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-27 19:21:42,216 INFO L175 Difference]: Start difference. First operand has 363 places, 314 transitions, 3777 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:21:42,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 337 transitions, 4877 flow [2024-06-27 19:21:42,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 337 transitions, 4549 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:21:42,802 INFO L231 Difference]: Finished difference. Result has 363 places, 318 transitions, 3702 flow [2024-06-27 19:21:42,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3457, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3702, PETRI_PLACES=363, PETRI_TRANSITIONS=318} [2024-06-27 19:21:42,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-27 19:21:42,803 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 318 transitions, 3702 flow [2024-06-27 19:21:42,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:42,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:42,803 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 19:21:42,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:21:42,803 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 19:21:42,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -227407867, now seen corresponding path program 18 times [2024-06-27 19:21:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:42,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729899996] [2024-06-27 19:21:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:43,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729899996] [2024-06-27 19:21:43,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729899996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:43,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867656394] [2024-06-27 19:21:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:43,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:43,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:43,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 318 transitions, 3702 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:43,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:43,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:43,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:44,375 INFO L124 PetriNetUnfolderBase]: 939/1682 cut-off events. [2024-06-27 19:21:44,375 INFO L125 PetriNetUnfolderBase]: For 161995/161997 co-relation queries the response was YES. [2024-06-27 19:21:44,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10864 conditions, 1682 events. 939/1682 cut-off events. For 161995/161997 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9653 event pairs, 142 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 10698. Up to 1449 conditions per place. [2024-06-27 19:21:44,395 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 271 selfloop transitions, 64 changer transitions 0/337 dead transitions. [2024-06-27 19:21:44,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 337 transitions, 4488 flow [2024-06-27 19:21:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:21:44,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:21:44,395 INFO L175 Difference]: Start difference. First operand has 363 places, 318 transitions, 3702 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:21:44,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 337 transitions, 4488 flow [2024-06-27 19:21:45,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 337 transitions, 4367 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:45,049 INFO L231 Difference]: Finished difference. Result has 367 places, 319 transitions, 3767 flow [2024-06-27 19:21:45,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3581, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3767, PETRI_PLACES=367, PETRI_TRANSITIONS=319} [2024-06-27 19:21:45,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-27 19:21:45,050 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 319 transitions, 3767 flow [2024-06-27 19:21:45,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:45,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:45,050 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 19:21:45,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:21:45,050 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 19:21:45,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1489753491, now seen corresponding path program 13 times [2024-06-27 19:21:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:45,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88742082] [2024-06-27 19:21:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:46,702 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 19:21:46,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:46,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88742082] [2024-06-27 19:21:46,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88742082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:46,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:46,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:46,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792478692] [2024-06-27 19:21:46,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:46,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:46,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 319 transitions, 3767 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:46,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:46,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:46,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:47,333 INFO L124 PetriNetUnfolderBase]: 945/1692 cut-off events. [2024-06-27 19:21:47,333 INFO L125 PetriNetUnfolderBase]: For 163994/163996 co-relation queries the response was YES. [2024-06-27 19:21:47,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11020 conditions, 1692 events. 945/1692 cut-off events. For 163994/163996 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9698 event pairs, 150 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 10852. Up to 1497 conditions per place. [2024-06-27 19:21:47,352 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 53 changer transitions 0/338 dead transitions. [2024-06-27 19:21:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 338 transitions, 4551 flow [2024-06-27 19:21:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:21:47,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:21:47,353 INFO L175 Difference]: Start difference. First operand has 367 places, 319 transitions, 3767 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:21:47,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 338 transitions, 4551 flow [2024-06-27 19:21:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 338 transitions, 4377 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:47,930 INFO L231 Difference]: Finished difference. Result has 369 places, 321 transitions, 3757 flow [2024-06-27 19:21:47,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3757, PETRI_PLACES=369, PETRI_TRANSITIONS=321} [2024-06-27 19:21:47,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-27 19:21:47,930 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 321 transitions, 3757 flow [2024-06-27 19:21:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:47,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:47,930 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 19:21:47,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:21:47,930 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 19:21:47,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -404659357, now seen corresponding path program 19 times [2024-06-27 19:21:47,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:47,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969393680] [2024-06-27 19:21:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:47,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:48,753 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 19:21:48,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:48,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969393680] [2024-06-27 19:21:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969393680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:48,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:48,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:48,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651688822] [2024-06-27 19:21:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:48,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:48,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:48,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:48,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:48,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 321 transitions, 3757 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:48,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:48,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:48,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:49,481 INFO L124 PetriNetUnfolderBase]: 949/1700 cut-off events. [2024-06-27 19:21:49,482 INFO L125 PetriNetUnfolderBase]: For 163955/163957 co-relation queries the response was YES. [2024-06-27 19:21:49,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 1700 events. 949/1700 cut-off events. For 163955/163957 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9755 event pairs, 161 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 10853. Up to 1533 conditions per place. [2024-06-27 19:21:49,502 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 291 selfloop transitions, 44 changer transitions 0/337 dead transitions. [2024-06-27 19:21:49,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 337 transitions, 4515 flow [2024-06-27 19:21:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:21:49,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:21:49,503 INFO L175 Difference]: Start difference. First operand has 369 places, 321 transitions, 3757 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:21:49,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 337 transitions, 4515 flow [2024-06-27 19:21:50,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 337 transitions, 4383 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:50,192 INFO L231 Difference]: Finished difference. Result has 371 places, 322 transitions, 3769 flow [2024-06-27 19:21:50,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3769, PETRI_PLACES=371, PETRI_TRANSITIONS=322} [2024-06-27 19:21:50,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-27 19:21:50,192 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 322 transitions, 3769 flow [2024-06-27 19:21:50,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:50,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:50,192 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 19:21:50,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:21:50,192 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 19:21:50,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:50,193 INFO L85 PathProgramCache]: Analyzing trace with hash -233836957, now seen corresponding path program 20 times [2024-06-27 19:21:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295105929] [2024-06-27 19:21:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:51,158 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 19:21:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295105929] [2024-06-27 19:21:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295105929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800210900] [2024-06-27 19:21:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:51,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:51,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 322 transitions, 3769 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:51,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:51,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:51,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:51,851 INFO L124 PetriNetUnfolderBase]: 953/1708 cut-off events. [2024-06-27 19:21:51,851 INFO L125 PetriNetUnfolderBase]: For 167630/167632 co-relation queries the response was YES. [2024-06-27 19:21:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11116 conditions, 1708 events. 953/1708 cut-off events. For 167630/167632 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9836 event pairs, 154 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 10946. Up to 1510 conditions per place. [2024-06-27 19:21:51,871 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 283 selfloop transitions, 55 changer transitions 0/340 dead transitions. [2024-06-27 19:21:51,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 340 transitions, 4553 flow [2024-06-27 19:21:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:21:51,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:21:51,872 INFO L175 Difference]: Start difference. First operand has 371 places, 322 transitions, 3769 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:21:51,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 340 transitions, 4553 flow [2024-06-27 19:21:52,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 340 transitions, 4419 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:52,538 INFO L231 Difference]: Finished difference. Result has 373 places, 323 transitions, 3804 flow [2024-06-27 19:21:52,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3804, PETRI_PLACES=373, PETRI_TRANSITIONS=323} [2024-06-27 19:21:52,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-27 19:21:52,539 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 323 transitions, 3804 flow [2024-06-27 19:21:52,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:52,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:52,539 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 19:21:52,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:21:52,539 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 19:21:52,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash -399890813, now seen corresponding path program 14 times [2024-06-27 19:21:52,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:52,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213450167] [2024-06-27 19:21:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:52,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:54,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213450167] [2024-06-27 19:21:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213450167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:54,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549102815] [2024-06-27 19:21:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:54,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:54,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 323 transitions, 3804 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:54,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:54,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:54,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:54,986 INFO L124 PetriNetUnfolderBase]: 959/1718 cut-off events. [2024-06-27 19:21:54,986 INFO L125 PetriNetUnfolderBase]: For 169827/169829 co-relation queries the response was YES. [2024-06-27 19:21:55,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11176 conditions, 1718 events. 959/1718 cut-off events. For 169827/169829 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9879 event pairs, 167 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 11005. Up to 1541 conditions per place. [2024-06-27 19:21:55,003 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 290 selfloop transitions, 48 changer transitions 0/340 dead transitions. [2024-06-27 19:21:55,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 340 transitions, 4586 flow [2024-06-27 19:21:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:21:55,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:21:55,004 INFO L175 Difference]: Start difference. First operand has 373 places, 323 transitions, 3804 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:21:55,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 340 transitions, 4586 flow [2024-06-27 19:21:55,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 340 transitions, 4429 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:55,539 INFO L231 Difference]: Finished difference. Result has 375 places, 325 transitions, 3815 flow [2024-06-27 19:21:55,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3815, PETRI_PLACES=375, PETRI_TRANSITIONS=325} [2024-06-27 19:21:55,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-27 19:21:55,540 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 325 transitions, 3815 flow [2024-06-27 19:21:55,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:55,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:55,540 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 19:21:55,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:21:55,540 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 19:21:55,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash -227400923, now seen corresponding path program 15 times [2024-06-27 19:21:55,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:55,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738015524] [2024-06-27 19:21:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:56,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:56,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738015524] [2024-06-27 19:21:56,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738015524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:56,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:56,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:56,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605116333] [2024-06-27 19:21:56,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:56,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:56,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:57,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:57,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 325 transitions, 3815 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:57,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:57,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:57,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:57,755 INFO L124 PetriNetUnfolderBase]: 975/1744 cut-off events. [2024-06-27 19:21:57,755 INFO L125 PetriNetUnfolderBase]: For 187233/187235 co-relation queries the response was YES. [2024-06-27 19:21:57,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11579 conditions, 1744 events. 975/1744 cut-off events. For 187233/187235 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10044 event pairs, 140 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 11407. Up to 1380 conditions per place. [2024-06-27 19:21:57,777 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 84 changer transitions 0/349 dead transitions. [2024-06-27 19:21:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 349 transitions, 5193 flow [2024-06-27 19:21:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:21:57,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 19:21:57,778 INFO L175 Difference]: Start difference. First operand has 375 places, 325 transitions, 3815 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:21:57,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 349 transitions, 5193 flow [2024-06-27 19:21:58,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 349 transitions, 5055 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:58,494 INFO L231 Difference]: Finished difference. Result has 377 places, 329 transitions, 3987 flow [2024-06-27 19:21:58,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3987, PETRI_PLACES=377, PETRI_TRANSITIONS=329} [2024-06-27 19:21:58,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 19:21:58,495 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 329 transitions, 3987 flow [2024-06-27 19:21:58,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:58,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:58,495 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 19:21:58,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:21:58,495 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 19:21:58,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash -233841607, now seen corresponding path program 21 times [2024-06-27 19:21:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:58,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53769881] [2024-06-27 19:21:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:58,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53769881] [2024-06-27 19:21:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53769881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:59,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:59,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:21:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761424937] [2024-06-27 19:21:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:59,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:21:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:21:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:21:59,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:59,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 329 transitions, 3987 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:21:59,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:59,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:59,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:00,286 INFO L124 PetriNetUnfolderBase]: 979/1752 cut-off events. [2024-06-27 19:22:00,286 INFO L125 PetriNetUnfolderBase]: For 191779/191781 co-relation queries the response was YES. [2024-06-27 19:22:00,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11788 conditions, 1752 events. 979/1752 cut-off events. For 191779/191781 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10114 event pairs, 164 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 11615. Up to 1554 conditions per place. [2024-06-27 19:22:00,307 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 292 selfloop transitions, 53 changer transitions 0/347 dead transitions. [2024-06-27 19:22:00,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 347 transitions, 4785 flow [2024-06-27 19:22:00,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:22:00,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:22:00,308 INFO L175 Difference]: Start difference. First operand has 377 places, 329 transitions, 3987 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:22:00,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 347 transitions, 4785 flow [2024-06-27 19:22:00,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 347 transitions, 4365 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-27 19:22:00,964 INFO L231 Difference]: Finished difference. Result has 376 places, 330 transitions, 3734 flow [2024-06-27 19:22:00,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3567, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3734, PETRI_PLACES=376, PETRI_TRANSITIONS=330} [2024-06-27 19:22:00,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:22:00,965 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 330 transitions, 3734 flow [2024-06-27 19:22:00,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:00,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:00,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:22:00,965 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 19:22:00,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1696378557, now seen corresponding path program 16 times [2024-06-27 19:22:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626030376] [2024-06-27 19:22:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626030376] [2024-06-27 19:22:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626030376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760617130] [2024-06-27 19:22:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:03,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:03,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:03,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:03,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 330 transitions, 3734 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:03,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:03,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:03,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:04,058 INFO L124 PetriNetUnfolderBase]: 971/1740 cut-off events. [2024-06-27 19:22:04,058 INFO L125 PetriNetUnfolderBase]: For 174888/174890 co-relation queries the response was YES. [2024-06-27 19:22:04,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10681 conditions, 1740 events. 971/1740 cut-off events. For 174888/174890 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10056 event pairs, 156 based on Foata normal form. 4/1743 useless extension candidates. Maximal degree in co-relation 10511. Up to 1518 conditions per place. [2024-06-27 19:22:04,077 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 285 selfloop transitions, 60 changer transitions 0/347 dead transitions. [2024-06-27 19:22:04,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 347 transitions, 4482 flow [2024-06-27 19:22:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:22:04,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:22:04,078 INFO L175 Difference]: Start difference. First operand has 376 places, 330 transitions, 3734 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:22:04,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 347 transitions, 4482 flow [2024-06-27 19:22:04,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 347 transitions, 4273 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:04,625 INFO L231 Difference]: Finished difference. Result has 378 places, 330 transitions, 3655 flow [2024-06-27 19:22:04,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3655, PETRI_PLACES=378, PETRI_TRANSITIONS=330} [2024-06-27 19:22:04,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-27 19:22:04,626 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 330 transitions, 3655 flow [2024-06-27 19:22:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:04,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:04,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:04,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:22:04,626 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 19:22:04,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash -227161913, now seen corresponding path program 17 times [2024-06-27 19:22:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175369320] [2024-06-27 19:22:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175369320] [2024-06-27 19:22:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175369320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178411706] [2024-06-27 19:22:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:06,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:06,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 330 transitions, 3655 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:06,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:06,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:06,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:07,001 INFO L124 PetriNetUnfolderBase]: 967/1734 cut-off events. [2024-06-27 19:22:07,001 INFO L125 PetriNetUnfolderBase]: For 146153/146155 co-relation queries the response was YES. [2024-06-27 19:22:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10294 conditions, 1734 events. 967/1734 cut-off events. For 146153/146155 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10049 event pairs, 141 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 10123. Up to 1379 conditions per place. [2024-06-27 19:22:07,021 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 96 changer transitions 0/354 dead transitions. [2024-06-27 19:22:07,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 354 transitions, 4459 flow [2024-06-27 19:22:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:22:07,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 19:22:07,022 INFO L175 Difference]: Start difference. First operand has 378 places, 330 transitions, 3655 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:22:07,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 354 transitions, 4459 flow [2024-06-27 19:22:07,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 354 transitions, 4272 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 19:22:07,553 INFO L231 Difference]: Finished difference. Result has 380 places, 330 transitions, 3670 flow [2024-06-27 19:22:07,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3670, PETRI_PLACES=380, PETRI_TRANSITIONS=330} [2024-06-27 19:22:07,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 19:22:07,553 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 330 transitions, 3670 flow [2024-06-27 19:22:07,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:07,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:07,554 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 19:22:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:22:07,554 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 19:22:07,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash -227161603, now seen corresponding path program 2 times [2024-06-27 19:22:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:07,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810236327] [2024-06-27 19:22:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810236327] [2024-06-27 19:22:09,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810236327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:09,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335380961] [2024-06-27 19:22:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:09,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:09,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:09,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 330 transitions, 3670 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:09,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:09,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:09,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:10,080 INFO L124 PetriNetUnfolderBase]: 964/1729 cut-off events. [2024-06-27 19:22:10,080 INFO L125 PetriNetUnfolderBase]: For 130807/130809 co-relation queries the response was YES. [2024-06-27 19:22:10,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10066 conditions, 1729 events. 964/1729 cut-off events. For 130807/130809 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10032 event pairs, 203 based on Foata normal form. 2/1730 useless extension candidates. Maximal degree in co-relation 9895. Up to 1600 conditions per place. [2024-06-27 19:22:10,100 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 306 selfloop transitions, 38 changer transitions 0/346 dead transitions. [2024-06-27 19:22:10,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 346 transitions, 4432 flow [2024-06-27 19:22:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:22:10,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:22:10,101 INFO L175 Difference]: Start difference. First operand has 380 places, 330 transitions, 3670 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:22:10,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 346 transitions, 4432 flow [2024-06-27 19:22:10,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 346 transitions, 4180 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 19:22:10,611 INFO L231 Difference]: Finished difference. Result has 380 places, 330 transitions, 3500 flow [2024-06-27 19:22:10,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3500, PETRI_PLACES=380, PETRI_TRANSITIONS=330} [2024-06-27 19:22:10,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 19:22:10,612 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 330 transitions, 3500 flow [2024-06-27 19:22:10,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:10,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:10,612 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 19:22:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 19:22:10,612 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 19:22:10,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -636903037, now seen corresponding path program 22 times [2024-06-27 19:22:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546296002] [2024-06-27 19:22:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:11,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:11,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546296002] [2024-06-27 19:22:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546296002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389078623] [2024-06-27 19:22:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:11,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:11,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:11,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 330 transitions, 3500 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:11,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:11,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:12,198 INFO L124 PetriNetUnfolderBase]: 961/1723 cut-off events. [2024-06-27 19:22:12,198 INFO L125 PetriNetUnfolderBase]: For 117272/117272 co-relation queries the response was YES. [2024-06-27 19:22:12,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9480 conditions, 1723 events. 961/1723 cut-off events. For 117272/117272 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9965 event pairs, 150 based on Foata normal form. 2/1724 useless extension candidates. Maximal degree in co-relation 9309. Up to 1519 conditions per place. [2024-06-27 19:22:12,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 56 changer transitions 0/354 dead transitions. [2024-06-27 19:22:12,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 354 transitions, 4295 flow [2024-06-27 19:22:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:22:12,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:22:12,218 INFO L175 Difference]: Start difference. First operand has 380 places, 330 transitions, 3500 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:22:12,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 354 transitions, 4295 flow [2024-06-27 19:22:12,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 354 transitions, 4188 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 19:22:12,649 INFO L231 Difference]: Finished difference. Result has 381 places, 330 transitions, 3511 flow [2024-06-27 19:22:12,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3395, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3511, PETRI_PLACES=381, PETRI_TRANSITIONS=330} [2024-06-27 19:22:12,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-27 19:22:12,649 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 330 transitions, 3511 flow [2024-06-27 19:22:12,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:12,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:12,650 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 19:22:12,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 19:22:12,650 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 19:22:12,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2018385274, now seen corresponding path program 1 times [2024-06-27 19:22:12,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:12,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465785118] [2024-06-27 19:22:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:12,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465785118] [2024-06-27 19:22:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465785118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:13,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:13,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517467975] [2024-06-27 19:22:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:14,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:14,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 330 transitions, 3511 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:14,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:14,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:14,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:14,890 INFO L124 PetriNetUnfolderBase]: 979/1764 cut-off events. [2024-06-27 19:22:14,890 INFO L125 PetriNetUnfolderBase]: For 190982/190982 co-relation queries the response was YES. [2024-06-27 19:22:14,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9527 conditions, 1764 events. 979/1764 cut-off events. For 190982/190982 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10190 event pairs, 189 based on Foata normal form. 13/1776 useless extension candidates. Maximal degree in co-relation 9356. Up to 1514 conditions per place. [2024-06-27 19:22:14,907 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 45 changer transitions 21/354 dead transitions. [2024-06-27 19:22:14,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 354 transitions, 4335 flow [2024-06-27 19:22:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:22:14,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:22:14,908 INFO L175 Difference]: Start difference. First operand has 381 places, 330 transitions, 3511 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:22:14,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 354 transitions, 4335 flow [2024-06-27 19:22:15,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 354 transitions, 3986 flow, removed 61 selfloop flow, removed 13 redundant places. [2024-06-27 19:22:15,413 INFO L231 Difference]: Finished difference. Result has 380 places, 318 transitions, 3129 flow [2024-06-27 19:22:15,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3168, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3129, PETRI_PLACES=380, PETRI_TRANSITIONS=318} [2024-06-27 19:22:15,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 19:22:15,413 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 318 transitions, 3129 flow [2024-06-27 19:22:15,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:15,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:15,413 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 19:22:15,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 19:22:15,413 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 19:22:15,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:15,414 INFO L85 PathProgramCache]: Analyzing trace with hash 181059140, now seen corresponding path program 2 times [2024-06-27 19:22:15,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:15,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134211039] [2024-06-27 19:22:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:15,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134211039] [2024-06-27 19:22:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134211039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66841580] [2024-06-27 19:22:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:16,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:16,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:16,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:16,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 318 transitions, 3129 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:16,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:16,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:16,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:17,278 INFO L124 PetriNetUnfolderBase]: 931/1684 cut-off events. [2024-06-27 19:22:17,278 INFO L125 PetriNetUnfolderBase]: For 107278/107278 co-relation queries the response was YES. [2024-06-27 19:22:17,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8702 conditions, 1684 events. 931/1684 cut-off events. For 107278/107278 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9741 event pairs, 181 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 8533. Up to 1502 conditions per place. [2024-06-27 19:22:17,298 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 47 changer transitions 0/338 dead transitions. [2024-06-27 19:22:17,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 338 transitions, 3873 flow [2024-06-27 19:22:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:22:17,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:22:17,299 INFO L175 Difference]: Start difference. First operand has 380 places, 318 transitions, 3129 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:22:17,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 338 transitions, 3873 flow [2024-06-27 19:22:17,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 338 transitions, 3587 flow, removed 11 selfloop flow, removed 20 redundant places. [2024-06-27 19:22:17,659 INFO L231 Difference]: Finished difference. Result has 366 places, 319 transitions, 2965 flow [2024-06-27 19:22:17,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2965, PETRI_PLACES=366, PETRI_TRANSITIONS=319} [2024-06-27 19:22:17,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-27 19:22:17,659 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 319 transitions, 2965 flow [2024-06-27 19:22:17,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:17,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:17,660 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 19:22:17,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 19:22:17,660 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 19:22:17,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2018535004, now seen corresponding path program 3 times [2024-06-27 19:22:17,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:17,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077579693] [2024-06-27 19:22:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:19,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077579693] [2024-06-27 19:22:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077579693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:19,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:19,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236959154] [2024-06-27 19:22:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:19,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:19,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 319 transitions, 2965 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:19,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:19,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:19,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:19,855 INFO L124 PetriNetUnfolderBase]: 935/1692 cut-off events. [2024-06-27 19:22:19,855 INFO L125 PetriNetUnfolderBase]: For 94706/94706 co-relation queries the response was YES. [2024-06-27 19:22:19,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8302 conditions, 1692 events. 935/1692 cut-off events. For 94706/94706 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9810 event pairs, 183 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 8143. Up to 1529 conditions per place. [2024-06-27 19:22:19,873 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 293 selfloop transitions, 44 changer transitions 0/339 dead transitions. [2024-06-27 19:22:19,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 339 transitions, 3709 flow [2024-06-27 19:22:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:22:19,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:22:19,874 INFO L175 Difference]: Start difference. First operand has 366 places, 319 transitions, 2965 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:22:19,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 339 transitions, 3709 flow [2024-06-27 19:22:20,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 339 transitions, 3599 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:20,225 INFO L231 Difference]: Finished difference. Result has 368 places, 320 transitions, 2971 flow [2024-06-27 19:22:20,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2971, PETRI_PLACES=368, PETRI_TRANSITIONS=320} [2024-06-27 19:22:20,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-27 19:22:20,225 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 320 transitions, 2971 flow [2024-06-27 19:22:20,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:20,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:20,225 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 19:22:20,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 19:22:20,226 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 19:22:20,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2106061762, now seen corresponding path program 4 times [2024-06-27 19:22:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072357312] [2024-06-27 19:22:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072357312] [2024-06-27 19:22:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072357312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:21,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672244124] [2024-06-27 19:22:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:21,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:21,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 320 transitions, 2971 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:21,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:21,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:21,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:22,063 INFO L124 PetriNetUnfolderBase]: 939/1700 cut-off events. [2024-06-27 19:22:22,064 INFO L125 PetriNetUnfolderBase]: For 98233/98233 co-relation queries the response was YES. [2024-06-27 19:22:22,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8349 conditions, 1700 events. 939/1700 cut-off events. For 98233/98233 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9876 event pairs, 184 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 8189. Up to 1543 conditions per place. [2024-06-27 19:22:22,081 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 37 changer transitions 0/340 dead transitions. [2024-06-27 19:22:22,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 340 transitions, 3717 flow [2024-06-27 19:22:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:22:22,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-27 19:22:22,082 INFO L175 Difference]: Start difference. First operand has 368 places, 320 transitions, 2971 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:22:22,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 340 transitions, 3717 flow [2024-06-27 19:22:22,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 340 transitions, 3611 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:22,411 INFO L231 Difference]: Finished difference. Result has 370 places, 321 transitions, 2969 flow [2024-06-27 19:22:22,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=370, PETRI_TRANSITIONS=321} [2024-06-27 19:22:22,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-27 19:22:22,411 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 321 transitions, 2969 flow [2024-06-27 19:22:22,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:22,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:22,412 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 19:22:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 19:22:22,412 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 19:22:22,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash 388039584, now seen corresponding path program 5 times [2024-06-27 19:22:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936108099] [2024-06-27 19:22:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936108099] [2024-06-27 19:22:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936108099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113021604] [2024-06-27 19:22:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:23,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:23,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 321 transitions, 2969 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:23,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:23,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:23,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:24,225 INFO L124 PetriNetUnfolderBase]: 943/1708 cut-off events. [2024-06-27 19:22:24,225 INFO L125 PetriNetUnfolderBase]: For 98988/98988 co-relation queries the response was YES. [2024-06-27 19:22:24,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 1708 events. 943/1708 cut-off events. For 98988/98988 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9926 event pairs, 156 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 8225. Up to 1470 conditions per place. [2024-06-27 19:22:24,244 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 45 changer transitions 0/343 dead transitions. [2024-06-27 19:22:24,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 343 transitions, 3727 flow [2024-06-27 19:22:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 19:22:24,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-27 19:22:24,245 INFO L175 Difference]: Start difference. First operand has 370 places, 321 transitions, 2969 flow. Second operand 12 states and 121 transitions. [2024-06-27 19:22:24,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 343 transitions, 3727 flow [2024-06-27 19:22:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 343 transitions, 3633 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:24,580 INFO L231 Difference]: Finished difference. Result has 373 places, 322 transitions, 2997 flow [2024-06-27 19:22:24,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2997, PETRI_PLACES=373, PETRI_TRANSITIONS=322} [2024-06-27 19:22:24,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-27 19:22:24,580 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 322 transitions, 2997 flow [2024-06-27 19:22:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:24,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:24,580 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 19:22:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 19:22:24,580 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 19:22:24,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash -733669622, now seen corresponding path program 6 times [2024-06-27 19:22:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163274580] [2024-06-27 19:22:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:26,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163274580] [2024-06-27 19:22:26,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163274580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:26,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:26,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674085998] [2024-06-27 19:22:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:26,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:26,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:26,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 322 transitions, 2997 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:26,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:26,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:26,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:26,949 INFO L124 PetriNetUnfolderBase]: 947/1716 cut-off events. [2024-06-27 19:22:26,949 INFO L125 PetriNetUnfolderBase]: For 101949/101949 co-relation queries the response was YES. [2024-06-27 19:22:26,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 1716 events. 947/1716 cut-off events. For 101949/101949 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9988 event pairs, 152 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 8307. Up to 1456 conditions per place. [2024-06-27 19:22:26,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 74 changer transitions 0/343 dead transitions. [2024-06-27 19:22:26,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 343 transitions, 3771 flow [2024-06-27 19:22:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:22:26,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:22:26,967 INFO L175 Difference]: Start difference. First operand has 373 places, 322 transitions, 2997 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:22:26,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 343 transitions, 3771 flow [2024-06-27 19:22:27,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 343 transitions, 3659 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 19:22:27,322 INFO L231 Difference]: Finished difference. Result has 374 places, 323 transitions, 3067 flow [2024-06-27 19:22:27,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3067, PETRI_PLACES=374, PETRI_TRANSITIONS=323} [2024-06-27 19:22:27,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 19:22:27,323 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 323 transitions, 3067 flow [2024-06-27 19:22:27,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:27,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:27,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:27,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 19:22:27,323 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 19:22:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash -733675202, now seen corresponding path program 7 times [2024-06-27 19:22:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861662459] [2024-06-27 19:22:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:27,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:28,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861662459] [2024-06-27 19:22:28,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861662459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:28,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:28,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529341351] [2024-06-27 19:22:28,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:28,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:28,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:28,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 323 transitions, 3067 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:28,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:28,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:28,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:29,346 INFO L124 PetriNetUnfolderBase]: 951/1724 cut-off events. [2024-06-27 19:22:29,347 INFO L125 PetriNetUnfolderBase]: For 103860/103860 co-relation queries the response was YES. [2024-06-27 19:22:29,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8580 conditions, 1724 events. 951/1724 cut-off events. For 103860/103860 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10081 event pairs, 156 based on Foata normal form. 2/1725 useless extension candidates. Maximal degree in co-relation 8417. Up to 1472 conditions per place. [2024-06-27 19:22:29,365 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 71 changer transitions 0/344 dead transitions. [2024-06-27 19:22:29,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 344 transitions, 3843 flow [2024-06-27 19:22:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:22:29,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:22:29,366 INFO L175 Difference]: Start difference. First operand has 374 places, 323 transitions, 3067 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:22:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 344 transitions, 3843 flow [2024-06-27 19:22:29,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 344 transitions, 3671 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:29,753 INFO L231 Difference]: Finished difference. Result has 376 places, 324 transitions, 3073 flow [2024-06-27 19:22:29,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3073, PETRI_PLACES=376, PETRI_TRANSITIONS=324} [2024-06-27 19:22:29,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:22:29,754 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 324 transitions, 3073 flow [2024-06-27 19:22:29,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:29,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:29,754 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 19:22:29,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 19:22:29,754 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 19:22:29,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1069597634, now seen corresponding path program 8 times [2024-06-27 19:22:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803824209] [2024-06-27 19:22:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:31,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803824209] [2024-06-27 19:22:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803824209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:31,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:31,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789484135] [2024-06-27 19:22:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:31,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:31,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 324 transitions, 3073 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:31,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:31,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:31,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:31,895 INFO L124 PetriNetUnfolderBase]: 955/1732 cut-off events. [2024-06-27 19:22:31,895 INFO L125 PetriNetUnfolderBase]: For 105689/105689 co-relation queries the response was YES. [2024-06-27 19:22:31,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 1732 events. 955/1732 cut-off events. For 105689/105689 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10104 event pairs, 156 based on Foata normal form. 2/1733 useless extension candidates. Maximal degree in co-relation 8457. Up to 1414 conditions per place. [2024-06-27 19:22:31,912 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 80 changer transitions 0/346 dead transitions. [2024-06-27 19:22:31,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 346 transitions, 3867 flow [2024-06-27 19:22:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:22:31,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:22:31,913 INFO L175 Difference]: Start difference. First operand has 376 places, 324 transitions, 3073 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:22:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 346 transitions, 3867 flow [2024-06-27 19:22:32,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 346 transitions, 3699 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:32,277 INFO L231 Difference]: Finished difference. Result has 378 places, 325 transitions, 3103 flow [2024-06-27 19:22:32,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3103, PETRI_PLACES=378, PETRI_TRANSITIONS=325} [2024-06-27 19:22:32,278 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-27 19:22:32,278 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 325 transitions, 3103 flow [2024-06-27 19:22:32,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:32,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:32,278 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 19:22:32,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 19:22:32,278 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 19:22:32,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:32,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1069603214, now seen corresponding path program 9 times [2024-06-27 19:22:32,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:32,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228687748] [2024-06-27 19:22:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:32,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228687748] [2024-06-27 19:22:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228687748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395063600] [2024-06-27 19:22:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:34,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:34,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 325 transitions, 3103 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:34,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:34,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:34,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:34,921 INFO L124 PetriNetUnfolderBase]: 959/1740 cut-off events. [2024-06-27 19:22:34,921 INFO L125 PetriNetUnfolderBase]: For 107552/107552 co-relation queries the response was YES. [2024-06-27 19:22:34,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8696 conditions, 1740 events. 959/1740 cut-off events. For 107552/107552 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10175 event pairs, 150 based on Foata normal form. 2/1741 useless extension candidates. Maximal degree in co-relation 8531. Up to 1422 conditions per place. [2024-06-27 19:22:34,938 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 266 selfloop transitions, 79 changer transitions 0/347 dead transitions. [2024-06-27 19:22:34,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 347 transitions, 3899 flow [2024-06-27 19:22:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:22:34,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:22:34,940 INFO L175 Difference]: Start difference. First operand has 378 places, 325 transitions, 3103 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:22:34,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 347 transitions, 3899 flow [2024-06-27 19:22:35,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 347 transitions, 3711 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:35,313 INFO L231 Difference]: Finished difference. Result has 380 places, 326 transitions, 3113 flow [2024-06-27 19:22:35,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2915, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3113, PETRI_PLACES=380, PETRI_TRANSITIONS=326} [2024-06-27 19:22:35,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 19:22:35,313 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 326 transitions, 3113 flow [2024-06-27 19:22:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:35,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:35,314 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 19:22:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 19:22:35,314 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 19:22:35,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1646525818, now seen corresponding path program 10 times [2024-06-27 19:22:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:35,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98231335] [2024-06-27 19:22:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:35,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98231335] [2024-06-27 19:22:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98231335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345978468] [2024-06-27 19:22:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:36,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:36,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:37,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 326 transitions, 3113 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:37,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:37,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:37,648 INFO L124 PetriNetUnfolderBase]: 963/1748 cut-off events. [2024-06-27 19:22:37,648 INFO L125 PetriNetUnfolderBase]: For 109347/109347 co-relation queries the response was YES. [2024-06-27 19:22:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8743 conditions, 1748 events. 963/1748 cut-off events. For 109347/109347 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10241 event pairs, 178 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 8577. Up to 1562 conditions per place. [2024-06-27 19:22:37,667 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 51 changer transitions 0/345 dead transitions. [2024-06-27 19:22:37,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 345 transitions, 3885 flow [2024-06-27 19:22:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:22:37,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:22:37,668 INFO L175 Difference]: Start difference. First operand has 380 places, 326 transitions, 3113 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:22:37,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 345 transitions, 3885 flow [2024-06-27 19:22:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 345 transitions, 3697 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:38,047 INFO L231 Difference]: Finished difference. Result has 382 places, 327 transitions, 3069 flow [2024-06-27 19:22:38,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3069, PETRI_PLACES=382, PETRI_TRANSITIONS=327} [2024-06-27 19:22:38,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-27 19:22:38,047 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 327 transitions, 3069 flow [2024-06-27 19:22:38,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:38,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:38,047 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 19:22:38,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 19:22:38,047 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 19:22:38,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash -649867514, now seen corresponding path program 11 times [2024-06-27 19:22:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997121257] [2024-06-27 19:22:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997121257] [2024-06-27 19:22:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997121257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261265819] [2024-06-27 19:22:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:39,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:39,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:39,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 327 transitions, 3069 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:39,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:39,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:39,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:39,943 INFO L124 PetriNetUnfolderBase]: 967/1756 cut-off events. [2024-06-27 19:22:39,943 INFO L125 PetriNetUnfolderBase]: For 111346/111346 co-relation queries the response was YES. [2024-06-27 19:22:39,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8720 conditions, 1756 events. 967/1756 cut-off events. For 111346/111346 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10303 event pairs, 150 based on Foata normal form. 2/1757 useless extension candidates. Maximal degree in co-relation 8553. Up to 1490 conditions per place. [2024-06-27 19:22:39,961 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 72 changer transitions 0/348 dead transitions. [2024-06-27 19:22:39,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 348 transitions, 3859 flow [2024-06-27 19:22:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:22:39,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:22:39,962 INFO L175 Difference]: Start difference. First operand has 382 places, 327 transitions, 3069 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:22:39,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 348 transitions, 3859 flow [2024-06-27 19:22:40,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 348 transitions, 3725 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:40,331 INFO L231 Difference]: Finished difference. Result has 384 places, 328 transitions, 3124 flow [2024-06-27 19:22:40,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3124, PETRI_PLACES=384, PETRI_TRANSITIONS=328} [2024-06-27 19:22:40,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 19:22:40,332 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 328 transitions, 3124 flow [2024-06-27 19:22:40,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:40,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:40,332 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 19:22:40,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 19:22:40,332 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 19:22:40,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:40,333 INFO L85 PathProgramCache]: Analyzing trace with hash -728097496, now seen corresponding path program 1 times [2024-06-27 19:22:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:40,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047824269] [2024-06-27 19:22:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:40,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:42,969 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 19:22:42,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047824269] [2024-06-27 19:22:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047824269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:42,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549153096] [2024-06-27 19:22:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:42,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:43,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:43,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 328 transitions, 3124 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 19:22:43,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:43,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:43,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:43,887 INFO L124 PetriNetUnfolderBase]: 1005/1830 cut-off events. [2024-06-27 19:22:43,887 INFO L125 PetriNetUnfolderBase]: For 172182/172182 co-relation queries the response was YES. [2024-06-27 19:22:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8997 conditions, 1830 events. 1005/1830 cut-off events. For 172182/172182 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10809 event pairs, 176 based on Foata normal form. 10/1839 useless extension candidates. Maximal degree in co-relation 8829. Up to 1574 conditions per place. [2024-06-27 19:22:43,907 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 296 selfloop transitions, 52 changer transitions 14/364 dead transitions. [2024-06-27 19:22:43,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 364 transitions, 4034 flow [2024-06-27 19:22:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 19:22:43,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:22:43,909 INFO L175 Difference]: Start difference. First operand has 384 places, 328 transitions, 3124 flow. Second operand 12 states and 138 transitions. [2024-06-27 19:22:43,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 364 transitions, 4034 flow [2024-06-27 19:22:44,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 364 transitions, 3857 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:44,310 INFO L231 Difference]: Finished difference. Result has 389 places, 329 transitions, 3074 flow [2024-06-27 19:22:44,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3074, PETRI_PLACES=389, PETRI_TRANSITIONS=329} [2024-06-27 19:22:44,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-27 19:22:44,310 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 329 transitions, 3074 flow [2024-06-27 19:22:44,311 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 19:22:44,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:44,311 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 19:22:44,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 19:22:44,311 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 19:22:44,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2113206096, now seen corresponding path program 12 times [2024-06-27 19:22:44,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:44,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647817359] [2024-06-27 19:22:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:44,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:45,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647817359] [2024-06-27 19:22:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647817359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:45,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:45,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314242219] [2024-06-27 19:22:45,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:45,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:45,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:45,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:45,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 329 transitions, 3074 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:45,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:45,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:45,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:46,635 INFO L124 PetriNetUnfolderBase]: 973/1770 cut-off events. [2024-06-27 19:22:46,635 INFO L125 PetriNetUnfolderBase]: For 114371/114371 co-relation queries the response was YES. [2024-06-27 19:22:46,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8749 conditions, 1770 events. 973/1770 cut-off events. For 114371/114371 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10405 event pairs, 180 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 8578. Up to 1584 conditions per place. [2024-06-27 19:22:46,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 50 changer transitions 0/348 dead transitions. [2024-06-27 19:22:46,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 348 transitions, 3854 flow [2024-06-27 19:22:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:22:46,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-27 19:22:46,657 INFO L175 Difference]: Start difference. First operand has 389 places, 329 transitions, 3074 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:22:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 348 transitions, 3854 flow [2024-06-27 19:22:47,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 348 transitions, 3744 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:22:47,030 INFO L231 Difference]: Finished difference. Result has 388 places, 330 transitions, 3110 flow [2024-06-27 19:22:47,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3110, PETRI_PLACES=388, PETRI_TRANSITIONS=330} [2024-06-27 19:22:47,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-27 19:22:47,031 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 330 transitions, 3110 flow [2024-06-27 19:22:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:47,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:47,031 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 19:22:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 19:22:47,031 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 19:22:47,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -780835954, now seen corresponding path program 13 times [2024-06-27 19:22:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77664827] [2024-06-27 19:22:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:48,362 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 19:22:48,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77664827] [2024-06-27 19:22:48,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77664827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:48,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:48,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:48,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720512738] [2024-06-27 19:22:48,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:48,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:48,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:48,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:48,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 330 transitions, 3110 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:48,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:48,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:48,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:49,203 INFO L124 PetriNetUnfolderBase]: 977/1778 cut-off events. [2024-06-27 19:22:49,203 INFO L125 PetriNetUnfolderBase]: For 115200/115200 co-relation queries the response was YES. [2024-06-27 19:22:49,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 1778 events. 977/1778 cut-off events. For 115200/115200 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10484 event pairs, 162 based on Foata normal form. 2/1779 useless extension candidates. Maximal degree in co-relation 8685. Up to 1421 conditions per place. [2024-06-27 19:22:49,223 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 89 changer transitions 0/353 dead transitions. [2024-06-27 19:22:49,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 353 transitions, 3938 flow [2024-06-27 19:22:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:22:49,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:22:49,224 INFO L175 Difference]: Start difference. First operand has 388 places, 330 transitions, 3110 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:22:49,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 353 transitions, 3938 flow [2024-06-27 19:22:49,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 353 transitions, 3802 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:49,650 INFO L231 Difference]: Finished difference. Result has 390 places, 331 transitions, 3200 flow [2024-06-27 19:22:49,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3200, PETRI_PLACES=390, PETRI_TRANSITIONS=331} [2024-06-27 19:22:49,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-27 19:22:49,650 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 331 transitions, 3200 flow [2024-06-27 19:22:49,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:49,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:49,650 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 19:22:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 19:22:49,651 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 19:22:49,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash -450206248, now seen corresponding path program 2 times [2024-06-27 19:22:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279304379] [2024-06-27 19:22:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:51,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279304379] [2024-06-27 19:22:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279304379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:51,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:51,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709990539] [2024-06-27 19:22:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:51,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:51,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 331 transitions, 3200 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:51,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:51,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:51,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:52,367 INFO L124 PetriNetUnfolderBase]: 993/1814 cut-off events. [2024-06-27 19:22:52,367 INFO L125 PetriNetUnfolderBase]: For 177891/177891 co-relation queries the response was YES. [2024-06-27 19:22:52,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9042 conditions, 1814 events. 993/1814 cut-off events. For 177891/177891 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10753 event pairs, 166 based on Foata normal form. 10/1823 useless extension candidates. Maximal degree in co-relation 8871. Up to 1403 conditions per place. [2024-06-27 19:22:52,389 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 83 changer transitions 16/358 dead transitions. [2024-06-27 19:22:52,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 358 transitions, 4030 flow [2024-06-27 19:22:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 19:22:52,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:22:52,390 INFO L175 Difference]: Start difference. First operand has 390 places, 331 transitions, 3200 flow. Second operand 12 states and 138 transitions. [2024-06-27 19:22:52,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 358 transitions, 4030 flow [2024-06-27 19:22:52,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 358 transitions, 3814 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:52,889 INFO L231 Difference]: Finished difference. Result has 393 places, 325 transitions, 3112 flow [2024-06-27 19:22:52,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3112, PETRI_PLACES=393, PETRI_TRANSITIONS=325} [2024-06-27 19:22:52,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-27 19:22:52,890 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 325 transitions, 3112 flow [2024-06-27 19:22:52,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:52,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:52,890 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 19:22:52,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 19:22:52,890 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 19:22:52,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash -780568548, now seen corresponding path program 3 times [2024-06-27 19:22:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495597546] [2024-06-27 19:22:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:54,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:54,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495597546] [2024-06-27 19:22:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495597546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099411182] [2024-06-27 19:22:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:54,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:54,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:54,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:54,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 325 transitions, 3112 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:54,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:54,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:54,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:55,624 INFO L124 PetriNetUnfolderBase]: 973/1782 cut-off events. [2024-06-27 19:22:55,625 INFO L125 PetriNetUnfolderBase]: For 179759/179759 co-relation queries the response was YES. [2024-06-27 19:22:55,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 1782 events. 973/1782 cut-off events. For 179759/179759 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10521 event pairs, 166 based on Foata normal form. 10/1791 useless extension candidates. Maximal degree in co-relation 8675. Up to 1348 conditions per place. [2024-06-27 19:22:55,645 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 92 changer transitions 19/360 dead transitions. [2024-06-27 19:22:55,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 360 transitions, 3982 flow [2024-06-27 19:22:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:22:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:22:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 167 transitions. [2024-06-27 19:22:55,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34791666666666665 [2024-06-27 19:22:55,646 INFO L175 Difference]: Start difference. First operand has 393 places, 325 transitions, 3112 flow. Second operand 15 states and 167 transitions. [2024-06-27 19:22:55,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 360 transitions, 3982 flow [2024-06-27 19:22:56,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 360 transitions, 3796 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:22:56,074 INFO L231 Difference]: Finished difference. Result has 390 places, 316 transitions, 3041 flow [2024-06-27 19:22:56,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3041, PETRI_PLACES=390, PETRI_TRANSITIONS=316} [2024-06-27 19:22:56,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-27 19:22:56,074 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 316 transitions, 3041 flow [2024-06-27 19:22:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:56,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:56,075 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 19:22:56,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 19:22:56,075 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 19:22:56,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash -442787638, now seen corresponding path program 4 times [2024-06-27 19:22:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787179241] [2024-06-27 19:22:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:56,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:58,131 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 19:22:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787179241] [2024-06-27 19:22:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787179241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:58,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:22:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740147384] [2024-06-27 19:22:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:58,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:22:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:22:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:22:58,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:58,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 316 transitions, 3041 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:58,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:58,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:58,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:59,095 INFO L124 PetriNetUnfolderBase]: 974/1797 cut-off events. [2024-06-27 19:22:59,095 INFO L125 PetriNetUnfolderBase]: For 234484/234484 co-relation queries the response was YES. [2024-06-27 19:22:59,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10133 conditions, 1797 events. 974/1797 cut-off events. For 234484/234484 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10572 event pairs, 169 based on Foata normal form. 8/1804 useless extension candidates. Maximal degree in co-relation 9963. Up to 1306 conditions per place. [2024-06-27 19:22:59,117 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 81 changer transitions 16/350 dead transitions. [2024-06-27 19:22:59,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 350 transitions, 4167 flow [2024-06-27 19:22:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:22:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:22:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 19:22:59,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 19:22:59,118 INFO L175 Difference]: Start difference. First operand has 390 places, 316 transitions, 3041 flow. Second operand 12 states and 141 transitions. [2024-06-27 19:22:59,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 350 transitions, 4167 flow [2024-06-27 19:22:59,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 350 transitions, 3965 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-27 19:22:59,772 INFO L231 Difference]: Finished difference. Result has 381 places, 308 transitions, 2937 flow [2024-06-27 19:22:59,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2937, PETRI_PLACES=381, PETRI_TRANSITIONS=308} [2024-06-27 19:22:59,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-27 19:22:59,772 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 308 transitions, 2937 flow [2024-06-27 19:22:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:59,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:59,772 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 19:22:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 19:22:59,772 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 19:22:59,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1730627386, now seen corresponding path program 14 times [2024-06-27 19:22:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827229705] [2024-06-27 19:22:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:01,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827229705] [2024-06-27 19:23:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827229705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:01,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:01,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:01,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231695803] [2024-06-27 19:23:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:01,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:01,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:01,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:01,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 308 transitions, 2937 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:01,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:01,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:01,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:01,817 INFO L124 PetriNetUnfolderBase]: 938/1725 cut-off events. [2024-06-27 19:23:01,817 INFO L125 PetriNetUnfolderBase]: For 181157/181157 co-relation queries the response was YES. [2024-06-27 19:23:01,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 1725 events. 938/1725 cut-off events. For 181157/181157 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10059 event pairs, 177 based on Foata normal form. 2/1726 useless extension candidates. Maximal degree in co-relation 9632. Up to 1541 conditions per place. [2024-06-27 19:23:01,836 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 49 changer transitions 0/327 dead transitions. [2024-06-27 19:23:01,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 327 transitions, 3673 flow [2024-06-27 19:23:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:23:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:23:01,837 INFO L175 Difference]: Start difference. First operand has 381 places, 308 transitions, 2937 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:23:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 327 transitions, 3673 flow [2024-06-27 19:23:02,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 327 transitions, 3503 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-27 19:23:02,389 INFO L231 Difference]: Finished difference. Result has 372 places, 309 transitions, 2911 flow [2024-06-27 19:23:02,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2911, PETRI_PLACES=372, PETRI_TRANSITIONS=309} [2024-06-27 19:23:02,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-27 19:23:02,390 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 309 transitions, 2911 flow [2024-06-27 19:23:02,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:02,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:02,390 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 19:23:02,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 19:23:02,390 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 19:23:02,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1502425542, now seen corresponding path program 5 times [2024-06-27 19:23:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952596915] [2024-06-27 19:23:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952596915] [2024-06-27 19:23:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952596915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:04,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:04,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:04,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204575560] [2024-06-27 19:23:04,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:04,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:04,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:04,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:04,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 309 transitions, 2911 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:04,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:04,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:04,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:04,958 INFO L124 PetriNetUnfolderBase]: 954/1761 cut-off events. [2024-06-27 19:23:04,959 INFO L125 PetriNetUnfolderBase]: For 227211/227211 co-relation queries the response was YES. [2024-06-27 19:23:04,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9777 conditions, 1761 events. 954/1761 cut-off events. For 227211/227211 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10289 event pairs, 191 based on Foata normal form. 10/1770 useless extension candidates. Maximal degree in co-relation 9628. Up to 1531 conditions per place. [2024-06-27 19:23:04,977 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 49 changer transitions 11/333 dead transitions. [2024-06-27 19:23:04,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 333 transitions, 3667 flow [2024-06-27 19:23:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:23:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:23:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 19:23:04,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-27 19:23:04,978 INFO L175 Difference]: Start difference. First operand has 372 places, 309 transitions, 2911 flow. Second operand 12 states and 131 transitions. [2024-06-27 19:23:04,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 333 transitions, 3667 flow [2024-06-27 19:23:05,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 333 transitions, 3535 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:05,582 INFO L231 Difference]: Finished difference. Result has 375 places, 306 transitions, 2857 flow [2024-06-27 19:23:05,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2857, PETRI_PLACES=375, PETRI_TRANSITIONS=306} [2024-06-27 19:23:05,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-27 19:23:05,583 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 306 transitions, 2857 flow [2024-06-27 19:23:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:05,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:05,583 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 19:23:05,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 19:23:05,583 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 19:23:05,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2025535188, now seen corresponding path program 15 times [2024-06-27 19:23:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853050014] [2024-06-27 19:23:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853050014] [2024-06-27 19:23:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853050014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411938134] [2024-06-27 19:23:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:07,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:07,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 306 transitions, 2857 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:07,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:07,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:07,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:07,927 INFO L124 PetriNetUnfolderBase]: 932/1719 cut-off events. [2024-06-27 19:23:07,927 INFO L125 PetriNetUnfolderBase]: For 175477/175477 co-relation queries the response was YES. [2024-06-27 19:23:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9632 conditions, 1719 events. 932/1719 cut-off events. For 175477/175477 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10008 event pairs, 181 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 9482. Up to 1543 conditions per place. [2024-06-27 19:23:07,946 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 277 selfloop transitions, 46 changer transitions 0/325 dead transitions. [2024-06-27 19:23:07,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 325 transitions, 3587 flow [2024-06-27 19:23:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:23:07,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:23:07,947 INFO L175 Difference]: Start difference. First operand has 375 places, 306 transitions, 2857 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:23:07,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 325 transitions, 3587 flow [2024-06-27 19:23:08,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 325 transitions, 3485 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:08,586 INFO L231 Difference]: Finished difference. Result has 372 places, 307 transitions, 2893 flow [2024-06-27 19:23:08,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2893, PETRI_PLACES=372, PETRI_TRANSITIONS=307} [2024-06-27 19:23:08,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-27 19:23:08,586 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 307 transitions, 2893 flow [2024-06-27 19:23:08,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:08,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:08,586 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 19:23:08,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 19:23:08,586 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 19:23:08,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1587194362, now seen corresponding path program 16 times [2024-06-27 19:23:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:08,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790323887] [2024-06-27 19:23:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:10,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790323887] [2024-06-27 19:23:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790323887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:10,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:10,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:10,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869724252] [2024-06-27 19:23:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:10,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:10,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:10,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 307 transitions, 2893 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:10,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:10,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:10,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:11,092 INFO L124 PetriNetUnfolderBase]: 936/1727 cut-off events. [2024-06-27 19:23:11,092 INFO L125 PetriNetUnfolderBase]: For 173505/173505 co-relation queries the response was YES. [2024-06-27 19:23:11,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9711 conditions, 1727 events. 936/1727 cut-off events. For 173505/173505 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10084 event pairs, 200 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 9562. Up to 1553 conditions per place. [2024-06-27 19:23:11,112 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 48 changer transitions 0/325 dead transitions. [2024-06-27 19:23:11,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 325 transitions, 3629 flow [2024-06-27 19:23:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:23:11,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:23:11,113 INFO L175 Difference]: Start difference. First operand has 372 places, 307 transitions, 2893 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:23:11,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 325 transitions, 3629 flow [2024-06-27 19:23:11,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 325 transitions, 3501 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:11,704 INFO L231 Difference]: Finished difference. Result has 374 places, 308 transitions, 2909 flow [2024-06-27 19:23:11,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=374, PETRI_TRANSITIONS=308} [2024-06-27 19:23:11,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 19:23:11,705 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 308 transitions, 2909 flow [2024-06-27 19:23:11,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:11,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:11,705 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 19:23:11,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 19:23:11,705 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 19:23:11,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:11,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2050512496, now seen corresponding path program 17 times [2024-06-27 19:23:11,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:11,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910911506] [2024-06-27 19:23:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:11,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910911506] [2024-06-27 19:23:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910911506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:13,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:13,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712284490] [2024-06-27 19:23:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:13,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:13,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 308 transitions, 2909 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:13,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:13,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:13,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:13,807 INFO L124 PetriNetUnfolderBase]: 940/1736 cut-off events. [2024-06-27 19:23:13,807 INFO L125 PetriNetUnfolderBase]: For 176536/176538 co-relation queries the response was YES. [2024-06-27 19:23:13,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9774 conditions, 1736 events. 940/1736 cut-off events. For 176536/176538 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10150 event pairs, 200 based on Foata normal form. 2/1737 useless extension candidates. Maximal degree in co-relation 9624. Up to 1561 conditions per place. [2024-06-27 19:23:13,826 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 277 selfloop transitions, 47 changer transitions 0/326 dead transitions. [2024-06-27 19:23:13,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 326 transitions, 3647 flow [2024-06-27 19:23:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:23:13,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:23:13,827 INFO L175 Difference]: Start difference. First operand has 374 places, 308 transitions, 2909 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:23:13,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 326 transitions, 3647 flow [2024-06-27 19:23:14,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 326 transitions, 3513 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:14,422 INFO L231 Difference]: Finished difference. Result has 376 places, 309 transitions, 2919 flow [2024-06-27 19:23:14,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2919, PETRI_PLACES=376, PETRI_TRANSITIONS=309} [2024-06-27 19:23:14,422 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:23:14,422 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 309 transitions, 2919 flow [2024-06-27 19:23:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:14,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:14,423 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 19:23:14,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 19:23:14,423 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 19:23:14,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:14,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2050656646, now seen corresponding path program 18 times [2024-06-27 19:23:14,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:14,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808394281] [2024-06-27 19:23:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:14,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:15,898 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 19:23:15,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808394281] [2024-06-27 19:23:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808394281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:15,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294630488] [2024-06-27 19:23:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:15,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:15,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:16,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:16,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 309 transitions, 2919 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:16,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:16,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:16,685 INFO L124 PetriNetUnfolderBase]: 944/1744 cut-off events. [2024-06-27 19:23:16,685 INFO L125 PetriNetUnfolderBase]: For 179716/179718 co-relation queries the response was YES. [2024-06-27 19:23:16,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9831 conditions, 1744 events. 944/1744 cut-off events. For 179716/179718 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 10207 event pairs, 204 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 9680. Up to 1569 conditions per place. [2024-06-27 19:23:16,703 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 279 selfloop transitions, 46 changer transitions 0/327 dead transitions. [2024-06-27 19:23:16,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 327 transitions, 3659 flow [2024-06-27 19:23:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:23:16,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:23:16,704 INFO L175 Difference]: Start difference. First operand has 376 places, 309 transitions, 2919 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:23:16,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 327 transitions, 3659 flow [2024-06-27 19:23:17,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 327 transitions, 3525 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:17,263 INFO L231 Difference]: Finished difference. Result has 378 places, 310 transitions, 2929 flow [2024-06-27 19:23:17,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2929, PETRI_PLACES=378, PETRI_TRANSITIONS=310} [2024-06-27 19:23:17,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-27 19:23:17,264 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 310 transitions, 2929 flow [2024-06-27 19:23:17,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:17,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:17,264 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 19:23:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 19:23:17,264 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 19:23:17,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash -173614034, now seen corresponding path program 19 times [2024-06-27 19:23:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929294437] [2024-06-27 19:23:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929294437] [2024-06-27 19:23:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929294437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183637236] [2024-06-27 19:23:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:18,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:18,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:19,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:19,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 310 transitions, 2929 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:19,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:19,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:19,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:19,846 INFO L124 PetriNetUnfolderBase]: 948/1752 cut-off events. [2024-06-27 19:23:19,847 INFO L125 PetriNetUnfolderBase]: For 182996/182998 co-relation queries the response was YES. [2024-06-27 19:23:19,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9890 conditions, 1752 events. 948/1752 cut-off events. For 182996/182998 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 10281 event pairs, 162 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 9738. Up to 991 conditions per place. [2024-06-27 19:23:19,862 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 141 changer transitions 0/333 dead transitions. [2024-06-27 19:23:19,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 333 transitions, 3731 flow [2024-06-27 19:23:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:23:19,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:23:19,863 INFO L175 Difference]: Start difference. First operand has 378 places, 310 transitions, 2929 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:23:19,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 333 transitions, 3731 flow [2024-06-27 19:23:20,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 333 transitions, 3597 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:20,444 INFO L231 Difference]: Finished difference. Result has 380 places, 311 transitions, 3131 flow [2024-06-27 19:23:20,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3131, PETRI_PLACES=380, PETRI_TRANSITIONS=311} [2024-06-27 19:23:20,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 19:23:20,445 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 311 transitions, 3131 flow [2024-06-27 19:23:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:20,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:20,445 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 19:23:20,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 19:23:20,446 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 19:23:20,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1633987710, now seen corresponding path program 6 times [2024-06-27 19:23:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:20,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655876220] [2024-06-27 19:23:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:22,562 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 19:23:22,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:22,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655876220] [2024-06-27 19:23:22,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655876220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:22,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:22,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:22,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079503481] [2024-06-27 19:23:22,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:22,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:22,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:22,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 311 transitions, 3131 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:22,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:22,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:22,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:23,496 INFO L124 PetriNetUnfolderBase]: 996/1852 cut-off events. [2024-06-27 19:23:23,496 INFO L125 PetriNetUnfolderBase]: For 318869/318869 co-relation queries the response was YES. [2024-06-27 19:23:23,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12047 conditions, 1852 events. 996/1852 cut-off events. For 318869/318869 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10898 event pairs, 154 based on Foata normal form. 8/1859 useless extension candidates. Maximal degree in co-relation 11894. Up to 1343 conditions per place. [2024-06-27 19:23:23,516 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 243 selfloop transitions, 95 changer transitions 8/348 dead transitions. [2024-06-27 19:23:23,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 348 transitions, 4318 flow [2024-06-27 19:23:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:23:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:23:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-27 19:23:23,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-27 19:23:23,517 INFO L175 Difference]: Start difference. First operand has 380 places, 311 transitions, 3131 flow. Second operand 13 states and 155 transitions. [2024-06-27 19:23:23,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 348 transitions, 4318 flow [2024-06-27 19:23:24,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 348 transitions, 3992 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:24,447 INFO L231 Difference]: Finished difference. Result has 384 places, 309 transitions, 2983 flow [2024-06-27 19:23:24,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2983, PETRI_PLACES=384, PETRI_TRANSITIONS=309} [2024-06-27 19:23:24,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 19:23:24,447 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 309 transitions, 2983 flow [2024-06-27 19:23:24,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:24,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:24,447 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 19:23:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 19:23:24,447 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 19:23:24,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2054231566, now seen corresponding path program 20 times [2024-06-27 19:23:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294591726] [2024-06-27 19:23:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294591726] [2024-06-27 19:23:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294591726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442624894] [2024-06-27 19:23:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:25,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:25,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 309 transitions, 2983 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:25,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:25,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:25,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:26,617 INFO L124 PetriNetUnfolderBase]: 991/1845 cut-off events. [2024-06-27 19:23:26,617 INFO L125 PetriNetUnfolderBase]: For 320341/320343 co-relation queries the response was YES. [2024-06-27 19:23:26,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12639 conditions, 1845 events. 991/1845 cut-off events. For 320341/320343 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10853 event pairs, 226 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 12485. Up to 1633 conditions per place. [2024-06-27 19:23:26,639 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 283 selfloop transitions, 45 changer transitions 0/330 dead transitions. [2024-06-27 19:23:26,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 330 transitions, 3989 flow [2024-06-27 19:23:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:23:26,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:23:26,640 INFO L175 Difference]: Start difference. First operand has 384 places, 309 transitions, 2983 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:23:26,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 330 transitions, 3989 flow [2024-06-27 19:23:27,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 330 transitions, 3711 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:23:27,752 INFO L231 Difference]: Finished difference. Result has 381 places, 310 transitions, 2855 flow [2024-06-27 19:23:27,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2855, PETRI_PLACES=381, PETRI_TRANSITIONS=310} [2024-06-27 19:23:27,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-27 19:23:27,753 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 310 transitions, 2855 flow [2024-06-27 19:23:27,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:27,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:27,753 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 19:23:27,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 19:23:27,753 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 19:23:27,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash -173346628, now seen corresponding path program 7 times [2024-06-27 19:23:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:27,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352307907] [2024-06-27 19:23:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:27,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:29,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:29,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352307907] [2024-06-27 19:23:29,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352307907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:29,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:29,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209617192] [2024-06-27 19:23:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:29,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:29,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 310 transitions, 2855 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:29,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:29,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:29,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:29,906 INFO L124 PetriNetUnfolderBase]: 1007/1881 cut-off events. [2024-06-27 19:23:29,906 INFO L125 PetriNetUnfolderBase]: For 373327/373329 co-relation queries the response was YES. [2024-06-27 19:23:29,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12569 conditions, 1881 events. 1007/1881 cut-off events. For 373327/373329 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11149 event pairs, 189 based on Foata normal form. 10/1890 useless extension candidates. Maximal degree in co-relation 12416. Up to 1472 conditions per place. [2024-06-27 19:23:29,927 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 86 changer transitions 21/341 dead transitions. [2024-06-27 19:23:29,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 341 transitions, 3685 flow [2024-06-27 19:23:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:23:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:23:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-27 19:23:29,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-27 19:23:29,928 INFO L175 Difference]: Start difference. First operand has 381 places, 310 transitions, 2855 flow. Second operand 13 states and 150 transitions. [2024-06-27 19:23:29,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 341 transitions, 3685 flow [2024-06-27 19:23:30,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 341 transitions, 3549 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:30,957 INFO L231 Difference]: Finished difference. Result has 385 places, 301 transitions, 2822 flow [2024-06-27 19:23:30,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2822, PETRI_PLACES=385, PETRI_TRANSITIONS=301} [2024-06-27 19:23:30,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-27 19:23:30,958 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 301 transitions, 2822 flow [2024-06-27 19:23:30,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:30,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:30,958 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 19:23:30,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 19:23:30,958 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 19:23:30,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1625247210, now seen corresponding path program 21 times [2024-06-27 19:23:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667038123] [2024-06-27 19:23:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:32,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667038123] [2024-06-27 19:23:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667038123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:32,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:32,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494327598] [2024-06-27 19:23:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:32,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:32,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 301 transitions, 2822 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 19:23:32,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:32,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:32,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:33,166 INFO L124 PetriNetUnfolderBase]: 952/1772 cut-off events. [2024-06-27 19:23:33,166 INFO L125 PetriNetUnfolderBase]: For 279360/279362 co-relation queries the response was YES. [2024-06-27 19:23:33,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 1772 events. 952/1772 cut-off events. For 279360/279362 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 10397 event pairs, 172 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 11450. Up to 1457 conditions per place. [2024-06-27 19:23:33,227 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 238 selfloop transitions, 83 changer transitions 0/323 dead transitions. [2024-06-27 19:23:33,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 323 transitions, 3598 flow [2024-06-27 19:23:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:23:33,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:23:33,228 INFO L175 Difference]: Start difference. First operand has 385 places, 301 transitions, 2822 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:23:33,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 323 transitions, 3598 flow [2024-06-27 19:23:34,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 323 transitions, 3390 flow, removed 6 selfloop flow, removed 17 redundant places. [2024-06-27 19:23:34,018 INFO L231 Difference]: Finished difference. Result has 372 places, 302 transitions, 2838 flow [2024-06-27 19:23:34,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2838, PETRI_PLACES=372, PETRI_TRANSITIONS=302} [2024-06-27 19:23:34,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-27 19:23:34,019 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 302 transitions, 2838 flow [2024-06-27 19:23:34,019 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 19:23:34,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:34,019 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 19:23:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 19:23:34,019 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 19:23:34,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:34,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1564510394, now seen corresponding path program 8 times [2024-06-27 19:23:34,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:34,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954154121] [2024-06-27 19:23:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:34,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:35,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:35,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954154121] [2024-06-27 19:23:35,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954154121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:35,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200802525] [2024-06-27 19:23:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:35,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:35,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 302 transitions, 2838 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 19:23:35,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:35,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:36,193 INFO L124 PetriNetUnfolderBase]: 1000/1871 cut-off events. [2024-06-27 19:23:36,193 INFO L125 PetriNetUnfolderBase]: For 395143/395143 co-relation queries the response was YES. [2024-06-27 19:23:36,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13395 conditions, 1871 events. 1000/1871 cut-off events. For 395143/395143 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11109 event pairs, 312 based on Foata normal form. 8/1878 useless extension candidates. Maximal degree in co-relation 13245. Up to 1678 conditions per place. [2024-06-27 19:23:36,215 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 24 changer transitions 9/329 dead transitions. [2024-06-27 19:23:36,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 329 transitions, 3919 flow [2024-06-27 19:23:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:23:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:23:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:23:36,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:23:36,216 INFO L175 Difference]: Start difference. First operand has 372 places, 302 transitions, 2838 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:23:36,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 329 transitions, 3919 flow [2024-06-27 19:23:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 329 transitions, 3707 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:37,136 INFO L231 Difference]: Finished difference. Result has 376 places, 300 transitions, 2706 flow [2024-06-27 19:23:37,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2626, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2706, PETRI_PLACES=376, PETRI_TRANSITIONS=300} [2024-06-27 19:23:37,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:23:37,136 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 300 transitions, 2706 flow [2024-06-27 19:23:37,136 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 19:23:37,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:37,136 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 19:23:37,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 19:23:37,137 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 19:23:37,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:37,137 INFO L85 PathProgramCache]: Analyzing trace with hash -854397092, now seen corresponding path program 22 times [2024-06-27 19:23:37,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:37,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600678251] [2024-06-27 19:23:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:37,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:38,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:38,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600678251] [2024-06-27 19:23:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600678251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:38,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:38,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906596464] [2024-06-27 19:23:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:38,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:38,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:38,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 300 transitions, 2706 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:38,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:38,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:38,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:39,273 INFO L124 PetriNetUnfolderBase]: 980/1831 cut-off events. [2024-06-27 19:23:39,273 INFO L125 PetriNetUnfolderBase]: For 359253/359253 co-relation queries the response was YES. [2024-06-27 19:23:39,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13135 conditions, 1831 events. 980/1831 cut-off events. For 359253/359253 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10810 event pairs, 214 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 12983. Up to 1587 conditions per place. [2024-06-27 19:23:39,293 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 252 selfloop transitions, 67 changer transitions 0/321 dead transitions. [2024-06-27 19:23:39,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 321 transitions, 3470 flow [2024-06-27 19:23:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:23:39,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:23:39,294 INFO L175 Difference]: Start difference. First operand has 376 places, 300 transitions, 2706 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:23:39,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 321 transitions, 3470 flow [2024-06-27 19:23:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 321 transitions, 3421 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:40,341 INFO L231 Difference]: Finished difference. Result has 374 places, 301 transitions, 2852 flow [2024-06-27 19:23:40,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2852, PETRI_PLACES=374, PETRI_TRANSITIONS=301} [2024-06-27 19:23:40,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 19:23:40,341 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 301 transitions, 2852 flow [2024-06-27 19:23:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:40,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:40,342 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 19:23:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 19:23:40,342 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 19:23:40,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1906406640, now seen corresponding path program 9 times [2024-06-27 19:23:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:40,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874659369] [2024-06-27 19:23:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874659369] [2024-06-27 19:23:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874659369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:41,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97110182] [2024-06-27 19:23:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:42,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:42,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 301 transitions, 2852 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:42,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:42,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:42,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:42,806 INFO L124 PetriNetUnfolderBase]: 996/1868 cut-off events. [2024-06-27 19:23:42,806 INFO L125 PetriNetUnfolderBase]: For 416948/416950 co-relation queries the response was YES. [2024-06-27 19:23:42,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13405 conditions, 1868 events. 996/1868 cut-off events. For 416948/416950 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11107 event pairs, 246 based on Foata normal form. 10/1877 useless extension candidates. Maximal degree in co-relation 13254. Up to 1639 conditions per place. [2024-06-27 19:23:42,825 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 44 changer transitions 16/324 dead transitions. [2024-06-27 19:23:42,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 324 transitions, 3588 flow [2024-06-27 19:23:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:23:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:23:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 19:23:42,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-27 19:23:42,826 INFO L175 Difference]: Start difference. First operand has 374 places, 301 transitions, 2852 flow. Second operand 12 states and 130 transitions. [2024-06-27 19:23:42,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 324 transitions, 3588 flow [2024-06-27 19:23:43,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 324 transitions, 3405 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:43,948 INFO L231 Difference]: Finished difference. Result has 377 places, 295 transitions, 2722 flow [2024-06-27 19:23:43,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2722, PETRI_PLACES=377, PETRI_TRANSITIONS=295} [2024-06-27 19:23:43,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 19:23:43,948 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 295 transitions, 2722 flow [2024-06-27 19:23:43,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:43,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:43,948 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 19:23:43,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 19:23:43,949 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 19:23:43,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1625252790, now seen corresponding path program 23 times [2024-06-27 19:23:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:43,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821547535] [2024-06-27 19:23:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:43,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:45,425 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 19:23:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821547535] [2024-06-27 19:23:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821547535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:45,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:45,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:45,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96385391] [2024-06-27 19:23:45,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:45,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:45,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:45,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:45,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 295 transitions, 2722 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 19:23:45,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:45,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:45,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:46,261 INFO L124 PetriNetUnfolderBase]: 1008/1900 cut-off events. [2024-06-27 19:23:46,262 INFO L125 PetriNetUnfolderBase]: For 478606/478608 co-relation queries the response was YES. [2024-06-27 19:23:46,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15422 conditions, 1900 events. 1008/1900 cut-off events. For 478606/478608 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11371 event pairs, 216 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 15270. Up to 1449 conditions per place. [2024-06-27 19:23:46,280 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 85 changer transitions 0/322 dead transitions. [2024-06-27 19:23:46,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 322 transitions, 3784 flow [2024-06-27 19:23:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:23:46,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 19:23:46,280 INFO L175 Difference]: Start difference. First operand has 377 places, 295 transitions, 2722 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:23:46,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 322 transitions, 3784 flow [2024-06-27 19:23:47,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 322 transitions, 3678 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 19:23:47,480 INFO L231 Difference]: Finished difference. Result has 371 places, 296 transitions, 2854 flow [2024-06-27 19:23:47,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2854, PETRI_PLACES=371, PETRI_TRANSITIONS=296} [2024-06-27 19:23:47,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-27 19:23:47,481 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 296 transitions, 2854 flow [2024-06-27 19:23:47,481 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 19:23:47,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:47,481 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 19:23:47,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 19:23:47,481 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 19:23:47,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1625037464, now seen corresponding path program 10 times [2024-06-27 19:23:47,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:47,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016299857] [2024-06-27 19:23:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016299857] [2024-06-27 19:23:49,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016299857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:49,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:49,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:49,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724038999] [2024-06-27 19:23:49,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:49,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:49,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:49,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:49,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 296 transitions, 2854 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:49,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:49,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:49,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:50,033 INFO L124 PetriNetUnfolderBase]: 995/1877 cut-off events. [2024-06-27 19:23:50,033 INFO L125 PetriNetUnfolderBase]: For 448843/448845 co-relation queries the response was YES. [2024-06-27 19:23:50,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14122 conditions, 1877 events. 995/1877 cut-off events. For 448843/448845 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11178 event pairs, 203 based on Foata normal form. 10/1886 useless extension candidates. Maximal degree in co-relation 13972. Up to 1500 conditions per place. [2024-06-27 19:23:50,050 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 80 changer transitions 16/323 dead transitions. [2024-06-27 19:23:50,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 323 transitions, 3622 flow [2024-06-27 19:23:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:23:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:23:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 19:23:50,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 19:23:50,051 INFO L175 Difference]: Start difference. First operand has 371 places, 296 transitions, 2854 flow. Second operand 12 states and 139 transitions. [2024-06-27 19:23:50,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 323 transitions, 3622 flow [2024-06-27 19:23:51,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 323 transitions, 3402 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:51,228 INFO L231 Difference]: Finished difference. Result has 374 places, 290 transitions, 2758 flow [2024-06-27 19:23:51,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2758, PETRI_PLACES=374, PETRI_TRANSITIONS=290} [2024-06-27 19:23:51,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 19:23:51,228 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 290 transitions, 2758 flow [2024-06-27 19:23:51,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:51,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:51,228 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 19:23:51,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 19:23:51,229 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 19:23:51,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:51,229 INFO L85 PathProgramCache]: Analyzing trace with hash -459285940, now seen corresponding path program 11 times [2024-06-27 19:23:51,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:51,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660494705] [2024-06-27 19:23:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660494705] [2024-06-27 19:23:52,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660494705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:52,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536346952] [2024-06-27 19:23:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:52,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:52,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 290 transitions, 2758 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 19:23:52,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:52,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:52,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:53,423 INFO L124 PetriNetUnfolderBase]: 985/1862 cut-off events. [2024-06-27 19:23:53,424 INFO L125 PetriNetUnfolderBase]: For 473057/473057 co-relation queries the response was YES. [2024-06-27 19:23:53,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 1862 events. 985/1862 cut-off events. For 473057/473057 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11099 event pairs, 319 based on Foata normal form. 8/1869 useless extension candidates. Maximal degree in co-relation 14387. Up to 1572 conditions per place. [2024-06-27 19:23:53,445 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 287 selfloop transitions, 16 changer transitions 11/316 dead transitions. [2024-06-27 19:23:53,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 316 transitions, 3769 flow [2024-06-27 19:23:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:23:53,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:23:53,446 INFO L175 Difference]: Start difference. First operand has 374 places, 290 transitions, 2758 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:23:53,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 316 transitions, 3769 flow [2024-06-27 19:23:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 316 transitions, 3589 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 19:23:54,661 INFO L231 Difference]: Finished difference. Result has 367 places, 287 transitions, 2600 flow [2024-06-27 19:23:54,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2586, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2600, PETRI_PLACES=367, PETRI_TRANSITIONS=287} [2024-06-27 19:23:54,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-27 19:23:54,662 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 287 transitions, 2600 flow [2024-06-27 19:23:54,662 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 19:23:54,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:54,662 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 19:23:54,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 19:23:54,662 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 19:23:54,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 146024140, now seen corresponding path program 24 times [2024-06-27 19:23:54,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:54,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332694115] [2024-06-27 19:23:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:55,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:55,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332694115] [2024-06-27 19:23:55,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332694115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:55,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:23:55,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804598825] [2024-06-27 19:23:55,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:55,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:23:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:23:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:23:56,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:56,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 287 transitions, 2600 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:56,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:56,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:56,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:56,658 INFO L124 PetriNetUnfolderBase]: 963/1816 cut-off events. [2024-06-27 19:23:56,658 INFO L125 PetriNetUnfolderBase]: For 410243/410243 co-relation queries the response was YES. [2024-06-27 19:23:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 1816 events. 963/1816 cut-off events. For 410243/410243 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10749 event pairs, 175 based on Foata normal form. 2/1817 useless extension candidates. Maximal degree in co-relation 13957. Up to 1120 conditions per place. [2024-06-27 19:23:56,679 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 143 changer transitions 0/308 dead transitions. [2024-06-27 19:23:56,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 308 transitions, 3338 flow [2024-06-27 19:23:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:23:56,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 19:23:56,680 INFO L175 Difference]: Start difference. First operand has 367 places, 287 transitions, 2600 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:23:56,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 308 transitions, 3338 flow [2024-06-27 19:23:57,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 308 transitions, 3309 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:57,781 INFO L231 Difference]: Finished difference. Result has 366 places, 288 transitions, 2917 flow [2024-06-27 19:23:57,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2917, PETRI_PLACES=366, PETRI_TRANSITIONS=288} [2024-06-27 19:23:57,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-27 19:23:57,782 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 288 transitions, 2917 flow [2024-06-27 19:23:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:57,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:57,782 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 19:23:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 19:23:57,783 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 19:23:57,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash 929458606, now seen corresponding path program 12 times [2024-06-27 19:23:57,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:57,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97641778] [2024-06-27 19:23:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:57,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:59,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:59,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97641778] [2024-06-27 19:23:59,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97641778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:59,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:59,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897817064] [2024-06-27 19:23:59,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:59,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:59,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:59,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:59,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:59,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:59,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 288 transitions, 2917 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 19:23:59,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:59,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:59,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:00,004 INFO L124 PetriNetUnfolderBase]: 947/1788 cut-off events. [2024-06-27 19:24:00,004 INFO L125 PetriNetUnfolderBase]: For 399349/399349 co-relation queries the response was YES. [2024-06-27 19:24:00,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12915 conditions, 1788 events. 947/1788 cut-off events. For 399349/399349 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10584 event pairs, 313 based on Foata normal form. 12/1799 useless extension candidates. Maximal degree in co-relation 12767. Up to 1669 conditions per place. [2024-06-27 19:24:00,023 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 21 changer transitions 7/307 dead transitions. [2024-06-27 19:24:00,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 307 transitions, 3612 flow [2024-06-27 19:24:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:24:00,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:24:00,024 INFO L175 Difference]: Start difference. First operand has 366 places, 288 transitions, 2917 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:24:00,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 307 transitions, 3612 flow [2024-06-27 19:24:00,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 307 transitions, 3236 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:00,912 INFO L231 Difference]: Finished difference. Result has 368 places, 285 transitions, 2563 flow [2024-06-27 19:24:00,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2563, PETRI_PLACES=368, PETRI_TRANSITIONS=285} [2024-06-27 19:24:00,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-27 19:24:00,912 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 285 transitions, 2563 flow [2024-06-27 19:24:00,912 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 19:24:00,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:00,912 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 19:24:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 19:24:00,912 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 19:24:00,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -380267474, now seen corresponding path program 25 times [2024-06-27 19:24:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:00,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376454553] [2024-06-27 19:24:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:02,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376454553] [2024-06-27 19:24:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376454553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:02,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:02,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598567172] [2024-06-27 19:24:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:02,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:02,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 285 transitions, 2563 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 19:24:02,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:02,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:02,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:03,461 INFO L124 PetriNetUnfolderBase]: 919/1737 cut-off events. [2024-06-27 19:24:03,461 INFO L125 PetriNetUnfolderBase]: For 356809/356811 co-relation queries the response was YES. [2024-06-27 19:24:03,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11455 conditions, 1737 events. 919/1737 cut-off events. For 356809/356811 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10193 event pairs, 190 based on Foata normal form. 12/1748 useless extension candidates. Maximal degree in co-relation 11306. Up to 1013 conditions per place. [2024-06-27 19:24:03,481 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 120 changer transitions 7/309 dead transitions. [2024-06-27 19:24:03,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 309 transitions, 3339 flow [2024-06-27 19:24:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:24:03,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 19:24:03,482 INFO L175 Difference]: Start difference. First operand has 368 places, 285 transitions, 2563 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:24:03,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 309 transitions, 3339 flow [2024-06-27 19:24:04,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 309 transitions, 3291 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:04,482 INFO L231 Difference]: Finished difference. Result has 368 places, 283 transitions, 2797 flow [2024-06-27 19:24:04,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2797, PETRI_PLACES=368, PETRI_TRANSITIONS=283} [2024-06-27 19:24:04,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-27 19:24:04,483 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 283 transitions, 2797 flow [2024-06-27 19:24:04,483 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 19:24:04,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:04,483 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 19:24:04,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 19:24:04,483 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 19:24:04,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1053698882, now seen corresponding path program 26 times [2024-06-27 19:24:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778340091] [2024-06-27 19:24:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778340091] [2024-06-27 19:24:05,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778340091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:05,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:05,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:05,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910942507] [2024-06-27 19:24:05,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:05,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:05,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:06,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:06,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 283 transitions, 2797 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:06,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:06,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:06,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:06,698 INFO L124 PetriNetUnfolderBase]: 897/1695 cut-off events. [2024-06-27 19:24:06,698 INFO L125 PetriNetUnfolderBase]: For 290925/290927 co-relation queries the response was YES. [2024-06-27 19:24:06,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11680 conditions, 1695 events. 897/1695 cut-off events. For 290925/290927 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9935 event pairs, 212 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 11530. Up to 1481 conditions per place. [2024-06-27 19:24:06,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 59 changer transitions 0/303 dead transitions. [2024-06-27 19:24:06,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 303 transitions, 3519 flow [2024-06-27 19:24:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:24:06,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:24:06,718 INFO L175 Difference]: Start difference. First operand has 368 places, 283 transitions, 2797 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:24:06,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 303 transitions, 3519 flow [2024-06-27 19:24:07,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 303 transitions, 3225 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:07,734 INFO L231 Difference]: Finished difference. Result has 368 places, 284 transitions, 2686 flow [2024-06-27 19:24:07,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2686, PETRI_PLACES=368, PETRI_TRANSITIONS=284} [2024-06-27 19:24:07,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-27 19:24:07,735 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 284 transitions, 2686 flow [2024-06-27 19:24:07,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:07,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:07,735 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 19:24:07,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 19:24:07,735 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 19:24:07,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash -380273054, now seen corresponding path program 27 times [2024-06-27 19:24:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194747277] [2024-06-27 19:24:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:09,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:09,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194747277] [2024-06-27 19:24:09,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194747277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:09,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:09,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:09,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506942204] [2024-06-27 19:24:09,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:09,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:09,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:09,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 284 transitions, 2686 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:09,750 INFO L124 PetriNetUnfolderBase]: 901/1703 cut-off events. [2024-06-27 19:24:09,751 INFO L125 PetriNetUnfolderBase]: For 296036/296038 co-relation queries the response was YES. [2024-06-27 19:24:09,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11574 conditions, 1703 events. 901/1703 cut-off events. For 296036/296038 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9932 event pairs, 182 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 11424. Up to 1410 conditions per place. [2024-06-27 19:24:09,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 79 changer transitions 0/304 dead transitions. [2024-06-27 19:24:09,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 304 transitions, 3416 flow [2024-06-27 19:24:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:24:09,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:24:09,771 INFO L175 Difference]: Start difference. First operand has 368 places, 284 transitions, 2686 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:24:09,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 304 transitions, 3416 flow [2024-06-27 19:24:10,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 304 transitions, 3245 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:10,706 INFO L231 Difference]: Finished difference. Result has 370 places, 285 transitions, 2739 flow [2024-06-27 19:24:10,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2739, PETRI_PLACES=370, PETRI_TRANSITIONS=285} [2024-06-27 19:24:10,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-27 19:24:10,707 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 285 transitions, 2739 flow [2024-06-27 19:24:10,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:10,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:10,707 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 19:24:10,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 19:24:10,707 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 19:24:10,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -854402672, now seen corresponding path program 28 times [2024-06-27 19:24:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:10,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485335404] [2024-06-27 19:24:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485335404] [2024-06-27 19:24:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485335404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307583457] [2024-06-27 19:24:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:12,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:12,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:12,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:12,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 285 transitions, 2739 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:12,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:12,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:12,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:13,029 INFO L124 PetriNetUnfolderBase]: 905/1711 cut-off events. [2024-06-27 19:24:13,029 INFO L125 PetriNetUnfolderBase]: For 301386/301388 co-relation queries the response was YES. [2024-06-27 19:24:13,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11709 conditions, 1711 events. 905/1711 cut-off events. For 301386/301388 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10060 event pairs, 208 based on Foata normal form. 2/1712 useless extension candidates. Maximal degree in co-relation 11558. Up to 1466 conditions per place. [2024-06-27 19:24:13,049 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 69 changer transitions 0/311 dead transitions. [2024-06-27 19:24:13,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 311 transitions, 3501 flow [2024-06-27 19:24:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:24:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:24:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 146 transitions. [2024-06-27 19:24:13,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32589285714285715 [2024-06-27 19:24:13,050 INFO L175 Difference]: Start difference. First operand has 370 places, 285 transitions, 2739 flow. Second operand 14 states and 146 transitions. [2024-06-27 19:24:13,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 311 transitions, 3501 flow [2024-06-27 19:24:14,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 311 transitions, 3287 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:14,130 INFO L231 Difference]: Finished difference. Result has 375 places, 286 transitions, 2732 flow [2024-06-27 19:24:14,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2732, PETRI_PLACES=375, PETRI_TRANSITIONS=286} [2024-06-27 19:24:14,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-27 19:24:14,130 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 286 transitions, 2732 flow [2024-06-27 19:24:14,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:14,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:14,131 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 19:24:14,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 19:24:14,131 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 19:24:14,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash -380417204, now seen corresponding path program 29 times [2024-06-27 19:24:14,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:14,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358547062] [2024-06-27 19:24:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:15,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358547062] [2024-06-27 19:24:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358547062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:15,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:15,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034289320] [2024-06-27 19:24:15,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:15,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:15,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:15,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:15,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 286 transitions, 2732 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:15,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:15,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:15,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:16,413 INFO L124 PetriNetUnfolderBase]: 909/1719 cut-off events. [2024-06-27 19:24:16,413 INFO L125 PetriNetUnfolderBase]: For 306343/306345 co-relation queries the response was YES. [2024-06-27 19:24:16,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11758 conditions, 1719 events. 909/1719 cut-off events. For 306343/306345 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10080 event pairs, 194 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 11606. Up to 1017 conditions per place. [2024-06-27 19:24:16,433 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 123 changer transitions 0/306 dead transitions. [2024-06-27 19:24:16,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 306 transitions, 3468 flow [2024-06-27 19:24:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:24:16,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-27 19:24:16,434 INFO L175 Difference]: Start difference. First operand has 375 places, 286 transitions, 2732 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:24:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 306 transitions, 3468 flow [2024-06-27 19:24:17,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 306 transitions, 3273 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-27 19:24:17,605 INFO L231 Difference]: Finished difference. Result has 374 places, 287 transitions, 2853 flow [2024-06-27 19:24:17,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2853, PETRI_PLACES=374, PETRI_TRANSITIONS=287} [2024-06-27 19:24:17,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 19:24:17,605 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 287 transitions, 2853 flow [2024-06-27 19:24:17,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:17,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:17,606 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 19:24:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 19:24:17,606 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 19:24:17,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1443144578, now seen corresponding path program 13 times [2024-06-27 19:24:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:17,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161815430] [2024-06-27 19:24:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:17,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:19,030 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 19:24:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:19,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161815430] [2024-06-27 19:24:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161815430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:19,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:19,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116969316] [2024-06-27 19:24:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:19,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:19,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:19,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:19,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 287 transitions, 2853 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:19,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:19,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:19,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:19,832 INFO L124 PetriNetUnfolderBase]: 936/1779 cut-off events. [2024-06-27 19:24:19,832 INFO L125 PetriNetUnfolderBase]: For 400463/400463 co-relation queries the response was YES. [2024-06-27 19:24:19,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12748 conditions, 1779 events. 936/1779 cut-off events. For 400463/400463 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10534 event pairs, 307 based on Foata normal form. 8/1786 useless extension candidates. Maximal degree in co-relation 12595. Up to 1604 conditions per place. [2024-06-27 19:24:19,853 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 284 selfloop transitions, 19 changer transitions 8/313 dead transitions. [2024-06-27 19:24:19,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 313 transitions, 3856 flow [2024-06-27 19:24:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:24:19,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-27 19:24:19,854 INFO L175 Difference]: Start difference. First operand has 374 places, 287 transitions, 2853 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:24:19,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 313 transitions, 3856 flow [2024-06-27 19:24:20,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 313 transitions, 3550 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:20,968 INFO L231 Difference]: Finished difference. Result has 377 places, 285 transitions, 2572 flow [2024-06-27 19:24:20,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2572, PETRI_PLACES=377, PETRI_TRANSITIONS=285} [2024-06-27 19:24:20,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 19:24:20,969 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 285 transitions, 2572 flow [2024-06-27 19:24:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:20,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:20,969 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 19:24:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 19:24:20,969 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 19:24:20,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash 359978942, now seen corresponding path program 30 times [2024-06-27 19:24:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:20,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880904535] [2024-06-27 19:24:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:22,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:22,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880904535] [2024-06-27 19:24:22,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880904535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:22,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:22,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683358485] [2024-06-27 19:24:22,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:22,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:22,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:22,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:22,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:22,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 285 transitions, 2572 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 19:24:22,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:22,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:22,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:23,626 INFO L124 PetriNetUnfolderBase]: 916/1739 cut-off events. [2024-06-27 19:24:23,626 INFO L125 PetriNetUnfolderBase]: For 361148/361148 co-relation queries the response was YES. [2024-06-27 19:24:23,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12367 conditions, 1739 events. 916/1739 cut-off events. For 361148/361148 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10221 event pairs, 173 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 12213. Up to 1066 conditions per place. [2024-06-27 19:24:23,647 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 166 selfloop transitions, 139 changer transitions 0/307 dead transitions. [2024-06-27 19:24:23,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 307 transitions, 3327 flow [2024-06-27 19:24:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 19:24:23,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:24:23,648 INFO L175 Difference]: Start difference. First operand has 377 places, 285 transitions, 2572 flow. Second operand 12 states and 136 transitions. [2024-06-27 19:24:23,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 307 transitions, 3327 flow [2024-06-27 19:24:24,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 307 transitions, 3285 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:24:24,809 INFO L231 Difference]: Finished difference. Result has 375 places, 286 transitions, 2880 flow [2024-06-27 19:24:24,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2880, PETRI_PLACES=375, PETRI_TRANSITIONS=286} [2024-06-27 19:24:24,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-27 19:24:24,809 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 286 transitions, 2880 flow [2024-06-27 19:24:24,809 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 19:24:24,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:24,810 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 19:24:24,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 19:24:24,810 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 19:24:24,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash 625895268, now seen corresponding path program 14 times [2024-06-27 19:24:24,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:24,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693706824] [2024-06-27 19:24:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:26,008 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 19:24:26,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693706824] [2024-06-27 19:24:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693706824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:26,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105581157] [2024-06-27 19:24:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:26,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:26,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:26,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 286 transitions, 2880 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:26,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:26,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:26,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:26,804 INFO L124 PetriNetUnfolderBase]: 942/1794 cut-off events. [2024-06-27 19:24:26,804 INFO L125 PetriNetUnfolderBase]: For 429515/429517 co-relation queries the response was YES. [2024-06-27 19:24:26,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13382 conditions, 1794 events. 942/1794 cut-off events. For 429515/429517 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10627 event pairs, 175 based on Foata normal form. 8/1801 useless extension candidates. Maximal degree in co-relation 13229. Up to 987 conditions per place. [2024-06-27 19:24:26,825 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 131 changer transitions 8/316 dead transitions. [2024-06-27 19:24:26,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 316 transitions, 3918 flow [2024-06-27 19:24:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:24:26,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:24:26,826 INFO L175 Difference]: Start difference. First operand has 375 places, 286 transitions, 2880 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:24:26,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 316 transitions, 3918 flow [2024-06-27 19:24:27,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 316 transitions, 3578 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:27,857 INFO L231 Difference]: Finished difference. Result has 376 places, 284 transitions, 2790 flow [2024-06-27 19:24:27,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2790, PETRI_PLACES=376, PETRI_TRANSITIONS=284} [2024-06-27 19:24:27,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:24:27,857 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 284 transitions, 2790 flow [2024-06-27 19:24:27,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:27,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:27,857 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 19:24:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 19:24:27,858 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 19:24:27,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1540506938, now seen corresponding path program 15 times [2024-06-27 19:24:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109801852] [2024-06-27 19:24:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109801852] [2024-06-27 19:24:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109801852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257406674] [2024-06-27 19:24:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:29,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:30,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:30,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 284 transitions, 2790 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:30,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:30,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:30,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:31,073 INFO L124 PetriNetUnfolderBase]: 934/1782 cut-off events. [2024-06-27 19:24:31,073 INFO L125 PetriNetUnfolderBase]: For 449785/449787 co-relation queries the response was YES. [2024-06-27 19:24:31,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13236 conditions, 1782 events. 934/1782 cut-off events. For 449785/449787 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10614 event pairs, 217 based on Foata normal form. 10/1791 useless extension candidates. Maximal degree in co-relation 13082. Up to 1387 conditions per place. [2024-06-27 19:24:31,094 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 78 changer transitions 12/310 dead transitions. [2024-06-27 19:24:31,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 310 transitions, 3522 flow [2024-06-27 19:24:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:24:31,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:24:31,095 INFO L175 Difference]: Start difference. First operand has 376 places, 284 transitions, 2790 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:24:31,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 310 transitions, 3522 flow [2024-06-27 19:24:32,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 310 transitions, 3262 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:24:32,142 INFO L231 Difference]: Finished difference. Result has 376 places, 278 transitions, 2640 flow [2024-06-27 19:24:32,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2640, PETRI_PLACES=376, PETRI_TRANSITIONS=278} [2024-06-27 19:24:32,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:24:32,143 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 278 transitions, 2640 flow [2024-06-27 19:24:32,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:32,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:32,143 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 19:24:32,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 19:24:32,143 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 19:24:32,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:32,144 INFO L85 PathProgramCache]: Analyzing trace with hash -457137734, now seen corresponding path program 16 times [2024-06-27 19:24:32,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:32,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764944696] [2024-06-27 19:24:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:32,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:33,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764944696] [2024-06-27 19:24:33,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764944696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:33,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:33,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201554770] [2024-06-27 19:24:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:33,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:33,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:33,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:33,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:33,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:33,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 278 transitions, 2640 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:33,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:33,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:33,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:34,446 INFO L124 PetriNetUnfolderBase]: 900/1727 cut-off events. [2024-06-27 19:24:34,447 INFO L125 PetriNetUnfolderBase]: For 413587/413587 co-relation queries the response was YES. [2024-06-27 19:24:34,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12330 conditions, 1727 events. 900/1727 cut-off events. For 413587/413587 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10252 event pairs, 311 based on Foata normal form. 10/1736 useless extension candidates. Maximal degree in co-relation 12177. Up to 1623 conditions per place. [2024-06-27 19:24:34,464 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 15 changer transitions 14/299 dead transitions. [2024-06-27 19:24:34,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 299 transitions, 3323 flow [2024-06-27 19:24:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:24:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:24:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-27 19:24:34,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3004807692307692 [2024-06-27 19:24:34,464 INFO L175 Difference]: Start difference. First operand has 376 places, 278 transitions, 2640 flow. Second operand 13 states and 125 transitions. [2024-06-27 19:24:34,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 299 transitions, 3323 flow [2024-06-27 19:24:35,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 299 transitions, 3156 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 19:24:35,406 INFO L231 Difference]: Finished difference. Result has 375 places, 272 transitions, 2457 flow [2024-06-27 19:24:35,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2457, PETRI_PLACES=375, PETRI_TRANSITIONS=272} [2024-06-27 19:24:35,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-27 19:24:35,407 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 272 transitions, 2457 flow [2024-06-27 19:24:35,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:35,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:35,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 19:24:35,407 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 19:24:35,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash 359973362, now seen corresponding path program 31 times [2024-06-27 19:24:35,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:35,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263600714] [2024-06-27 19:24:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:36,590 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 19:24:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263600714] [2024-06-27 19:24:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263600714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:36,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:36,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:36,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682310898] [2024-06-27 19:24:36,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:36,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:36,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:36,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:36,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:36,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:36,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 272 transitions, 2457 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 19:24:36,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:36,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:36,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:37,227 INFO L124 PetriNetUnfolderBase]: 872/1676 cut-off events. [2024-06-27 19:24:37,227 INFO L125 PetriNetUnfolderBase]: For 355508/355510 co-relation queries the response was YES. [2024-06-27 19:24:37,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12053 conditions, 1676 events. 872/1676 cut-off events. For 355508/355510 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9904 event pairs, 173 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 11900. Up to 1022 conditions per place. [2024-06-27 19:24:37,247 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 127 changer transitions 0/292 dead transitions. [2024-06-27 19:24:37,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 292 transitions, 3171 flow [2024-06-27 19:24:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:24:37,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-27 19:24:37,248 INFO L175 Difference]: Start difference. First operand has 375 places, 272 transitions, 2457 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:24:37,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 292 transitions, 3171 flow [2024-06-27 19:24:38,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 292 transitions, 3133 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 19:24:38,511 INFO L231 Difference]: Finished difference. Result has 369 places, 273 transitions, 2747 flow [2024-06-27 19:24:38,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2747, PETRI_PLACES=369, PETRI_TRANSITIONS=273} [2024-06-27 19:24:38,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-27 19:24:38,511 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 273 transitions, 2747 flow [2024-06-27 19:24:38,512 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 19:24:38,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:38,512 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 19:24:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 19:24:38,512 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 19:24:38,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1274387044, now seen corresponding path program 17 times [2024-06-27 19:24:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299131031] [2024-06-27 19:24:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:40,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299131031] [2024-06-27 19:24:40,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299131031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:40,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:40,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:40,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659756971] [2024-06-27 19:24:40,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:40,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:40,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:40,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:40,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 273 transitions, 2747 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:40,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:40,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:40,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:41,064 INFO L124 PetriNetUnfolderBase]: 888/1712 cut-off events. [2024-06-27 19:24:41,064 INFO L125 PetriNetUnfolderBase]: For 402810/402812 co-relation queries the response was YES. [2024-06-27 19:24:41,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12397 conditions, 1712 events. 888/1712 cut-off events. For 402810/402812 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10190 event pairs, 177 based on Foata normal form. 10/1721 useless extension candidates. Maximal degree in co-relation 12246. Up to 1026 conditions per place. [2024-06-27 19:24:41,084 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 118 changer transitions 23/302 dead transitions. [2024-06-27 19:24:41,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 302 transitions, 3479 flow [2024-06-27 19:24:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:24:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:24:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-27 19:24:41,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-06-27 19:24:41,085 INFO L175 Difference]: Start difference. First operand has 369 places, 273 transitions, 2747 flow. Second operand 13 states and 152 transitions. [2024-06-27 19:24:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 302 transitions, 3479 flow [2024-06-27 19:24:42,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 302 transitions, 3161 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:42,085 INFO L231 Difference]: Finished difference. Result has 373 places, 261 transitions, 2576 flow [2024-06-27 19:24:42,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2576, PETRI_PLACES=373, PETRI_TRANSITIONS=261} [2024-06-27 19:24:42,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-27 19:24:42,086 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 261 transitions, 2576 flow [2024-06-27 19:24:42,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:42,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:42,086 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 19:24:42,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 19:24:42,086 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:42,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash 360188688, now seen corresponding path program 18 times [2024-06-27 19:24:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:42,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069966367] [2024-06-27 19:24:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:43,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:43,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069966367] [2024-06-27 19:24:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069966367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:43,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:43,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:43,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900767578] [2024-06-27 19:24:43,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:43,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:43,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:43,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:43,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:43,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:43,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 261 transitions, 2576 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:43,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:43,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:43,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:44,184 INFO L124 PetriNetUnfolderBase]: 831/1605 cut-off events. [2024-06-27 19:24:44,184 INFO L125 PetriNetUnfolderBase]: For 333543/333545 co-relation queries the response was YES. [2024-06-27 19:24:44,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10658 conditions, 1605 events. 831/1605 cut-off events. For 333543/333545 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9422 event pairs, 164 based on Foata normal form. 10/1614 useless extension candidates. Maximal degree in co-relation 10506. Up to 951 conditions per place. [2024-06-27 19:24:44,201 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 115 changer transitions 16/286 dead transitions. [2024-06-27 19:24:44,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 286 transitions, 3256 flow [2024-06-27 19:24:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 19:24:44,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:24:44,202 INFO L175 Difference]: Start difference. First operand has 373 places, 261 transitions, 2576 flow. Second operand 12 states and 136 transitions. [2024-06-27 19:24:44,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 286 transitions, 3256 flow [2024-06-27 19:24:45,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 286 transitions, 2917 flow, removed 10 selfloop flow, removed 16 redundant places. [2024-06-27 19:24:45,128 INFO L231 Difference]: Finished difference. Result has 360 places, 255 transitions, 2438 flow [2024-06-27 19:24:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2438, PETRI_PLACES=360, PETRI_TRANSITIONS=255} [2024-06-27 19:24:45,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-27 19:24:45,129 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 255 transitions, 2438 flow [2024-06-27 19:24:45,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:45,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:45,129 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 19:24:45,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 19:24:45,129 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:45,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:45,130 INFO L85 PathProgramCache]: Analyzing trace with hash -847045442, now seen corresponding path program 32 times [2024-06-27 19:24:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090159125] [2024-06-27 19:24:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:47,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090159125] [2024-06-27 19:24:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090159125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613778763] [2024-06-27 19:24:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:47,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:47,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 255 transitions, 2438 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:47,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:47,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:48,009 INFO L124 PetriNetUnfolderBase]: 799/1545 cut-off events. [2024-06-27 19:24:48,009 INFO L125 PetriNetUnfolderBase]: For 259042/259044 co-relation queries the response was YES. [2024-06-27 19:24:48,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10270 conditions, 1545 events. 799/1545 cut-off events. For 259042/259044 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9004 event pairs, 190 based on Foata normal form. 2/1546 useless extension candidates. Maximal degree in co-relation 10122. Up to 1261 conditions per place. [2024-06-27 19:24:48,027 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 201 selfloop transitions, 74 changer transitions 0/277 dead transitions. [2024-06-27 19:24:48,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 277 transitions, 3130 flow [2024-06-27 19:24:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:24:48,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:24:48,028 INFO L175 Difference]: Start difference. First operand has 360 places, 255 transitions, 2438 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:24:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 277 transitions, 3130 flow [2024-06-27 19:24:48,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 277 transitions, 2880 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 19:24:48,749 INFO L231 Difference]: Finished difference. Result has 351 places, 256 transitions, 2409 flow [2024-06-27 19:24:48,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2409, PETRI_PLACES=351, PETRI_TRANSITIONS=256} [2024-06-27 19:24:48,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-27 19:24:48,749 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 256 transitions, 2409 flow [2024-06-27 19:24:48,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:48,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:48,749 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 19:24:48,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 19:24:48,750 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:48,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -846768736, now seen corresponding path program 19 times [2024-06-27 19:24:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885793844] [2024-06-27 19:24:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885793844] [2024-06-27 19:24:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885793844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:53,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:53,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348771997] [2024-06-27 19:24:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:53,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:53,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:53,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:53,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:53,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:53,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 256 transitions, 2409 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:53,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:54,753 INFO L124 PetriNetUnfolderBase]: 826/1606 cut-off events. [2024-06-27 19:24:54,753 INFO L125 PetriNetUnfolderBase]: For 317000/317002 co-relation queries the response was YES. [2024-06-27 19:24:54,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10900 conditions, 1606 events. 826/1606 cut-off events. For 317000/317002 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9441 event pairs, 191 based on Foata normal form. 8/1613 useless extension candidates. Maximal degree in co-relation 10756. Up to 1118 conditions per place. [2024-06-27 19:24:54,811 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 82 changer transitions 10/289 dead transitions. [2024-06-27 19:24:54,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 289 transitions, 3381 flow [2024-06-27 19:24:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:24:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:24:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 19:24:54,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:24:54,812 INFO L175 Difference]: Start difference. First operand has 351 places, 256 transitions, 2409 flow. Second operand 12 states and 144 transitions. [2024-06-27 19:24:54,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 289 transitions, 3381 flow [2024-06-27 19:24:55,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 289 transitions, 3176 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:55,703 INFO L231 Difference]: Finished difference. Result has 354 places, 252 transitions, 2334 flow [2024-06-27 19:24:55,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2334, PETRI_PLACES=354, PETRI_TRANSITIONS=252} [2024-06-27 19:24:55,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-27 19:24:55,703 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 252 transitions, 2334 flow [2024-06-27 19:24:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:55,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:55,704 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 19:24:55,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 19:24:55,704 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:55,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash -846778036, now seen corresponding path program 20 times [2024-06-27 19:24:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:55,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866925578] [2024-06-27 19:24:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:55,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:57,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:57,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866925578] [2024-06-27 19:24:57,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866925578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:57,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:57,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:24:57,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947369937] [2024-06-27 19:24:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:57,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:24:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:24:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:24:58,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:58,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 252 transitions, 2334 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:58,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:58,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:58,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:59,061 INFO L124 PetriNetUnfolderBase]: 820/1604 cut-off events. [2024-06-27 19:24:59,061 INFO L125 PetriNetUnfolderBase]: For 374480/374482 co-relation queries the response was YES. [2024-06-27 19:24:59,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10805 conditions, 1604 events. 820/1604 cut-off events. For 374480/374482 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9476 event pairs, 205 based on Foata normal form. 16/1619 useless extension candidates. Maximal degree in co-relation 10660. Up to 1201 conditions per place. [2024-06-27 19:24:59,077 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 67 changer transitions 29/282 dead transitions. [2024-06-27 19:24:59,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 282 transitions, 3028 flow [2024-06-27 19:24:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:24:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:24:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-27 19:24:59,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581730769230769 [2024-06-27 19:24:59,078 INFO L175 Difference]: Start difference. First operand has 354 places, 252 transitions, 2334 flow. Second operand 13 states and 149 transitions. [2024-06-27 19:24:59,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 282 transitions, 3028 flow [2024-06-27 19:25:00,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 282 transitions, 2860 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:00,089 INFO L231 Difference]: Finished difference. Result has 352 places, 235 transitions, 2145 flow [2024-06-27 19:25:00,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2145, PETRI_PLACES=352, PETRI_TRANSITIONS=235} [2024-06-27 19:25:00,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-27 19:25:00,089 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 235 transitions, 2145 flow [2024-06-27 19:25:00,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:00,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:00,089 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 19:25:00,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 19:25:00,090 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:00,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash -884419254, now seen corresponding path program 33 times [2024-06-27 19:25:00,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849597183] [2024-06-27 19:25:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:01,334 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 19:25:01,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849597183] [2024-06-27 19:25:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849597183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:01,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:01,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:01,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718328906] [2024-06-27 19:25:01,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:01,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:01,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:01,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:01,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:01,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 235 transitions, 2145 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:01,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:01,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:01,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:02,154 INFO L124 PetriNetUnfolderBase]: 739/1445 cut-off events. [2024-06-27 19:25:02,154 INFO L125 PetriNetUnfolderBase]: For 241475/241477 co-relation queries the response was YES. [2024-06-27 19:25:02,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 1445 events. 739/1445 cut-off events. For 241475/241477 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8369 event pairs, 190 based on Foata normal form. 2/1446 useless extension candidates. Maximal degree in co-relation 9402. Up to 1215 conditions per place. [2024-06-27 19:25:02,168 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 59 changer transitions 0/255 dead transitions. [2024-06-27 19:25:02,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 255 transitions, 2773 flow [2024-06-27 19:25:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:25:02,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:25:02,169 INFO L175 Difference]: Start difference. First operand has 352 places, 235 transitions, 2145 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:25:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 255 transitions, 2773 flow [2024-06-27 19:25:02,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 255 transitions, 2609 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-27 19:25:02,793 INFO L231 Difference]: Finished difference. Result has 334 places, 236 transitions, 2169 flow [2024-06-27 19:25:02,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2169, PETRI_PLACES=334, PETRI_TRANSITIONS=236} [2024-06-27 19:25:02,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-27 19:25:02,794 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 236 transitions, 2169 flow [2024-06-27 19:25:02,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:02,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:02,794 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 19:25:02,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 19:25:02,794 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:02,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1048126756, now seen corresponding path program 21 times [2024-06-27 19:25:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523890542] [2024-06-27 19:25:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:04,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523890542] [2024-06-27 19:25:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523890542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:04,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:04,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600426306] [2024-06-27 19:25:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:04,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:04,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 236 transitions, 2169 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:04,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:04,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:05,460 INFO L124 PetriNetUnfolderBase]: 741/1455 cut-off events. [2024-06-27 19:25:05,460 INFO L125 PetriNetUnfolderBase]: For 238816/238818 co-relation queries the response was YES. [2024-06-27 19:25:05,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8862 conditions, 1455 events. 741/1455 cut-off events. For 238816/238818 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8466 event pairs, 188 based on Foata normal form. 10/1464 useless extension candidates. Maximal degree in co-relation 8724. Up to 1177 conditions per place. [2024-06-27 19:25:05,475 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 57 changer transitions 10/259 dead transitions. [2024-06-27 19:25:05,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 259 transitions, 2781 flow [2024-06-27 19:25:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:25:05,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-27 19:25:05,476 INFO L175 Difference]: Start difference. First operand has 334 places, 236 transitions, 2169 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:25:05,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 259 transitions, 2781 flow [2024-06-27 19:25:06,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 259 transitions, 2607 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:06,246 INFO L231 Difference]: Finished difference. Result has 336 places, 230 transitions, 2073 flow [2024-06-27 19:25:06,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2073, PETRI_PLACES=336, PETRI_TRANSITIONS=230} [2024-06-27 19:25:06,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-27 19:25:06,247 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 230 transitions, 2073 flow [2024-06-27 19:25:06,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:06,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:06,247 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 19:25:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 19:25:06,247 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:06,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1340845672, now seen corresponding path program 34 times [2024-06-27 19:25:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122325640] [2024-06-27 19:25:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:07,654 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 19:25:07,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:07,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122325640] [2024-06-27 19:25:07,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122325640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:07,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:07,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197707550] [2024-06-27 19:25:07,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:07,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:07,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:07,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 230 transitions, 2073 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:07,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:07,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:07,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:08,440 INFO L124 PetriNetUnfolderBase]: 702/1386 cut-off events. [2024-06-27 19:25:08,440 INFO L125 PetriNetUnfolderBase]: For 182838/182840 co-relation queries the response was YES. [2024-06-27 19:25:08,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8243 conditions, 1386 events. 702/1386 cut-off events. For 182838/182840 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8018 event pairs, 183 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 8104. Up to 1180 conditions per place. [2024-06-27 19:25:08,450 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 54 changer transitions 0/249 dead transitions. [2024-06-27 19:25:08,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 249 transitions, 2623 flow [2024-06-27 19:25:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:25:08,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:25:08,451 INFO L175 Difference]: Start difference. First operand has 336 places, 230 transitions, 2073 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:25:08,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 249 transitions, 2623 flow [2024-06-27 19:25:09,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 249 transitions, 2466 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 19:25:09,084 INFO L231 Difference]: Finished difference. Result has 333 places, 230 transitions, 2028 flow [2024-06-27 19:25:09,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2028, PETRI_PLACES=333, PETRI_TRANSITIONS=230} [2024-06-27 19:25:09,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-27 19:25:09,085 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 230 transitions, 2028 flow [2024-06-27 19:25:09,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:09,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:09,085 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 19:25:09,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 19:25:09,085 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:09,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1736565086, now seen corresponding path program 22 times [2024-06-27 19:25:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:09,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080937367] [2024-06-27 19:25:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:09,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080937367] [2024-06-27 19:25:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080937367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:11,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:11,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:11,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347945669] [2024-06-27 19:25:11,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:11,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:11,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:11,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 230 transitions, 2028 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:11,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:11,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:12,054 INFO L124 PetriNetUnfolderBase]: 689/1362 cut-off events. [2024-06-27 19:25:12,055 INFO L125 PetriNetUnfolderBase]: For 170723/170723 co-relation queries the response was YES. [2024-06-27 19:25:12,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6972 conditions, 1362 events. 689/1362 cut-off events. For 170723/170723 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7869 event pairs, 155 based on Foata normal form. 10/1371 useless extension candidates. Maximal degree in co-relation 6834. Up to 1100 conditions per place. [2024-06-27 19:25:12,067 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 192 selfloop transitions, 58 changer transitions 9/261 dead transitions. [2024-06-27 19:25:12,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 261 transitions, 2657 flow [2024-06-27 19:25:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:25:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:25:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 19:25:12,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-27 19:25:12,068 INFO L175 Difference]: Start difference. First operand has 333 places, 230 transitions, 2028 flow. Second operand 13 states and 146 transitions. [2024-06-27 19:25:12,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 261 transitions, 2657 flow [2024-06-27 19:25:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 261 transitions, 2432 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:12,522 INFO L231 Difference]: Finished difference. Result has 335 places, 226 transitions, 1880 flow [2024-06-27 19:25:12,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1880, PETRI_PLACES=335, PETRI_TRANSITIONS=226} [2024-06-27 19:25:12,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-27 19:25:12,522 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 226 transitions, 1880 flow [2024-06-27 19:25:12,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:12,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:12,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:12,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 19:25:12,523 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:12,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1854393894, now seen corresponding path program 1 times [2024-06-27 19:25:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:12,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108544392] [2024-06-27 19:25:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108544392] [2024-06-27 19:25:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108544392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:14,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:14,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:14,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353467096] [2024-06-27 19:25:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:14,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:14,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:14,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:14,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:14,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 226 transitions, 1880 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:14,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:14,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:14,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:15,041 INFO L124 PetriNetUnfolderBase]: 671/1332 cut-off events. [2024-06-27 19:25:15,041 INFO L125 PetriNetUnfolderBase]: For 149069/149069 co-relation queries the response was YES. [2024-06-27 19:25:15,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 1332 events. 671/1332 cut-off events. For 149069/149069 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7693 event pairs, 170 based on Foata normal form. 6/1337 useless extension candidates. Maximal degree in co-relation 6483. Up to 1126 conditions per place. [2024-06-27 19:25:15,053 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 190 selfloop transitions, 36 changer transitions 19/247 dead transitions. [2024-06-27 19:25:15,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 247 transitions, 2428 flow [2024-06-27 19:25:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:25:15,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:25:15,054 INFO L175 Difference]: Start difference. First operand has 335 places, 226 transitions, 1880 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:25:15,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 247 transitions, 2428 flow [2024-06-27 19:25:15,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 247 transitions, 2235 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-27 19:25:15,403 INFO L231 Difference]: Finished difference. Result has 327 places, 215 transitions, 1679 flow [2024-06-27 19:25:15,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1679, PETRI_PLACES=327, PETRI_TRANSITIONS=215} [2024-06-27 19:25:15,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-27 19:25:15,403 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 215 transitions, 1679 flow [2024-06-27 19:25:15,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:15,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:15,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 19:25:15,404 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:15,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:15,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1313398322, now seen corresponding path program 2 times [2024-06-27 19:25:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:15,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206807473] [2024-06-27 19:25:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:15,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206807473] [2024-06-27 19:25:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206807473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:17,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:17,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285270330] [2024-06-27 19:25:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:17,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:17,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:17,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 215 transitions, 1679 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:17,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:17,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:17,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:17,772 INFO L124 PetriNetUnfolderBase]: 652/1303 cut-off events. [2024-06-27 19:25:17,772 INFO L125 PetriNetUnfolderBase]: For 138466/138466 co-relation queries the response was YES. [2024-06-27 19:25:17,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6210 conditions, 1303 events. 652/1303 cut-off events. For 138466/138466 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7510 event pairs, 168 based on Foata normal form. 6/1308 useless extension candidates. Maximal degree in co-relation 6076. Up to 1161 conditions per place. [2024-06-27 19:25:17,785 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 201 selfloop transitions, 21 changer transitions 17/241 dead transitions. [2024-06-27 19:25:17,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 241 transitions, 2240 flow [2024-06-27 19:25:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:25:17,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:25:17,786 INFO L175 Difference]: Start difference. First operand has 327 places, 215 transitions, 1679 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:25:17,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 241 transitions, 2240 flow [2024-06-27 19:25:18,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 241 transitions, 2160 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:18,196 INFO L231 Difference]: Finished difference. Result has 320 places, 211 transitions, 1607 flow [2024-06-27 19:25:18,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1607, PETRI_PLACES=320, PETRI_TRANSITIONS=211} [2024-06-27 19:25:18,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:25:18,197 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 211 transitions, 1607 flow [2024-06-27 19:25:18,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:18,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:18,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:18,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 19:25:18,197 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:18,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:18,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1739102724, now seen corresponding path program 3 times [2024-06-27 19:25:18,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:18,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255038771] [2024-06-27 19:25:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:18,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255038771] [2024-06-27 19:25:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255038771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:19,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:19,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898023312] [2024-06-27 19:25:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:19,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:19,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 211 transitions, 1607 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:19,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:19,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:19,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:20,273 INFO L124 PetriNetUnfolderBase]: 631/1264 cut-off events. [2024-06-27 19:25:20,273 INFO L125 PetriNetUnfolderBase]: For 130823/130823 co-relation queries the response was YES. [2024-06-27 19:25:20,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 1264 events. 631/1264 cut-off events. For 130823/130823 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7265 event pairs, 163 based on Foata normal form. 6/1269 useless extension candidates. Maximal degree in co-relation 5860. Up to 1083 conditions per place. [2024-06-27 19:25:20,285 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 22 changer transitions 26/234 dead transitions. [2024-06-27 19:25:20,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 234 transitions, 2127 flow [2024-06-27 19:25:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-27 19:25:20,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-27 19:25:20,286 INFO L175 Difference]: Start difference. First operand has 320 places, 211 transitions, 1607 flow. Second operand 12 states and 122 transitions. [2024-06-27 19:25:20,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 234 transitions, 2127 flow [2024-06-27 19:25:20,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 234 transitions, 2079 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:20,688 INFO L231 Difference]: Finished difference. Result has 318 places, 197 transitions, 1483 flow [2024-06-27 19:25:20,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1483, PETRI_PLACES=318, PETRI_TRANSITIONS=197} [2024-06-27 19:25:20,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-27 19:25:20,688 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 197 transitions, 1483 flow [2024-06-27 19:25:20,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:20,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:20,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:20,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 19:25:20,689 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:20,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash -855673856, now seen corresponding path program 4 times [2024-06-27 19:25:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:20,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656752262] [2024-06-27 19:25:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:20,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:22,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:22,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656752262] [2024-06-27 19:25:22,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656752262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:22,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:22,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:22,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728789301] [2024-06-27 19:25:22,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:22,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:22,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:22,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:22,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 197 transitions, 1483 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:22,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:22,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:23,473 INFO L124 PetriNetUnfolderBase]: 592/1195 cut-off events. [2024-06-27 19:25:23,473 INFO L125 PetriNetUnfolderBase]: For 130705/130705 co-relation queries the response was YES. [2024-06-27 19:25:23,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 1195 events. 592/1195 cut-off events. For 130705/130705 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6790 event pairs, 144 based on Foata normal form. 6/1200 useless extension candidates. Maximal degree in co-relation 5606. Up to 966 conditions per place. [2024-06-27 19:25:23,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 17 changer transitions 33/222 dead transitions. [2024-06-27 19:25:23,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 222 transitions, 1983 flow [2024-06-27 19:25:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:25:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:25:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-27 19:25:23,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-27 19:25:23,485 INFO L175 Difference]: Start difference. First operand has 318 places, 197 transitions, 1483 flow. Second operand 13 states and 128 transitions. [2024-06-27 19:25:23,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 222 transitions, 1983 flow [2024-06-27 19:25:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 222 transitions, 1921 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:23,864 INFO L231 Difference]: Finished difference. Result has 308 places, 180 transitions, 1356 flow [2024-06-27 19:25:23,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1356, PETRI_PLACES=308, PETRI_TRANSITIONS=180} [2024-06-27 19:25:23,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-27 19:25:23,864 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 180 transitions, 1356 flow [2024-06-27 19:25:23,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:23,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:23,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:23,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 19:25:23,864 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:23,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -681348532, now seen corresponding path program 5 times [2024-06-27 19:25:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689851957] [2024-06-27 19:25:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:26,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:26,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689851957] [2024-06-27 19:25:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689851957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:26,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769042979] [2024-06-27 19:25:26,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:26,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:26,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:27,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:27,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 180 transitions, 1356 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:27,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:27,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:27,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:28,029 INFO L124 PetriNetUnfolderBase]: 542/1099 cut-off events. [2024-06-27 19:25:28,030 INFO L125 PetriNetUnfolderBase]: For 150635/150635 co-relation queries the response was YES. [2024-06-27 19:25:28,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5935 conditions, 1099 events. 542/1099 cut-off events. For 150635/150635 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6044 event pairs, 137 based on Foata normal form. 6/1104 useless extension candidates. Maximal degree in co-relation 5808. Up to 798 conditions per place. [2024-06-27 19:25:28,040 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 47 changer transitions 11/205 dead transitions. [2024-06-27 19:25:28,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 205 transitions, 2034 flow [2024-06-27 19:25:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:25:28,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:25:28,041 INFO L175 Difference]: Start difference. First operand has 308 places, 180 transitions, 1356 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:25:28,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 205 transitions, 2034 flow [2024-06-27 19:25:28,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 205 transitions, 1955 flow, removed 18 selfloop flow, removed 17 redundant places. [2024-06-27 19:25:28,381 INFO L231 Difference]: Finished difference. Result has 285 places, 175 transitions, 1368 flow [2024-06-27 19:25:28,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1368, PETRI_PLACES=285, PETRI_TRANSITIONS=175} [2024-06-27 19:25:28,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 19:25:28,381 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 175 transitions, 1368 flow [2024-06-27 19:25:28,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:28,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:28,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 19:25:28,381 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:28,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1273562504, now seen corresponding path program 6 times [2024-06-27 19:25:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146369524] [2024-06-27 19:25:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:29,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:29,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146369524] [2024-06-27 19:25:29,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146369524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:29,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:29,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795218315] [2024-06-27 19:25:29,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:29,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:29,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:29,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 175 transitions, 1368 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:29,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:29,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:30,414 INFO L124 PetriNetUnfolderBase]: 526/1071 cut-off events. [2024-06-27 19:25:30,414 INFO L125 PetriNetUnfolderBase]: For 127703/127703 co-relation queries the response was YES. [2024-06-27 19:25:30,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 1071 events. 526/1071 cut-off events. For 127703/127703 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5870 event pairs, 131 based on Foata normal form. 6/1076 useless extension candidates. Maximal degree in co-relation 5606. Up to 813 conditions per place. [2024-06-27 19:25:30,424 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 42 changer transitions 19/197 dead transitions. [2024-06-27 19:25:30,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 197 transitions, 1820 flow [2024-06-27 19:25:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 19:25:30,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-27 19:25:30,425 INFO L175 Difference]: Start difference. First operand has 285 places, 175 transitions, 1368 flow. Second operand 12 states and 124 transitions. [2024-06-27 19:25:30,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 197 transitions, 1820 flow [2024-06-27 19:25:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 197 transitions, 1721 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:30,683 INFO L231 Difference]: Finished difference. Result has 281 places, 166 transitions, 1306 flow [2024-06-27 19:25:30,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1306, PETRI_PLACES=281, PETRI_TRANSITIONS=166} [2024-06-27 19:25:30,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 19:25:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 166 transitions, 1306 flow [2024-06-27 19:25:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:30,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:30,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 19:25:30,684 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:30,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 497308122, now seen corresponding path program 7 times [2024-06-27 19:25:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602453627] [2024-06-27 19:25:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:32,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:32,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602453627] [2024-06-27 19:25:32,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602453627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:32,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:32,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188151947] [2024-06-27 19:25:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:33,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:33,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 166 transitions, 1306 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:33,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:33,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:33,646 INFO L124 PetriNetUnfolderBase]: 498/1019 cut-off events. [2024-06-27 19:25:33,646 INFO L125 PetriNetUnfolderBase]: For 122191/122191 co-relation queries the response was YES. [2024-06-27 19:25:33,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5521 conditions, 1019 events. 498/1019 cut-off events. For 122191/122191 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5514 event pairs, 143 based on Foata normal form. 6/1024 useless extension candidates. Maximal degree in co-relation 5404. Up to 830 conditions per place. [2024-06-27 19:25:33,654 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 139 selfloop transitions, 34 changer transitions 9/184 dead transitions. [2024-06-27 19:25:33,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 184 transitions, 1720 flow [2024-06-27 19:25:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:25:33,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:25:33,655 INFO L175 Difference]: Start difference. First operand has 281 places, 166 transitions, 1306 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:25:33,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 184 transitions, 1720 flow [2024-06-27 19:25:33,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 184 transitions, 1626 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:33,879 INFO L231 Difference]: Finished difference. Result has 270 places, 163 transitions, 1269 flow [2024-06-27 19:25:33,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1269, PETRI_PLACES=270, PETRI_TRANSITIONS=163} [2024-06-27 19:25:33,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-27 19:25:33,880 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 163 transitions, 1269 flow [2024-06-27 19:25:33,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:33,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:33,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:33,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 19:25:33,880 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:33,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2105371836, now seen corresponding path program 8 times [2024-06-27 19:25:33,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:33,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684186983] [2024-06-27 19:25:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684186983] [2024-06-27 19:25:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684186983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:35,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199566616] [2024-06-27 19:25:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:35,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:35,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:35,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:35,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 163 transitions, 1269 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:35,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:35,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:35,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:36,458 INFO L124 PetriNetUnfolderBase]: 488/1001 cut-off events. [2024-06-27 19:25:36,458 INFO L125 PetriNetUnfolderBase]: For 111605/111605 co-relation queries the response was YES. [2024-06-27 19:25:36,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 1001 events. 488/1001 cut-off events. For 111605/111605 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5385 event pairs, 135 based on Foata normal form. 6/1006 useless extension candidates. Maximal degree in co-relation 5238. Up to 812 conditions per place. [2024-06-27 19:25:36,466 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 31 changer transitions 13/181 dead transitions. [2024-06-27 19:25:36,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 181 transitions, 1675 flow [2024-06-27 19:25:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:25:36,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:25:36,467 INFO L175 Difference]: Start difference. First operand has 270 places, 163 transitions, 1269 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:25:36,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 181 transitions, 1675 flow [2024-06-27 19:25:36,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 181 transitions, 1601 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:36,663 INFO L231 Difference]: Finished difference. Result has 266 places, 158 transitions, 1236 flow [2024-06-27 19:25:36,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1236, PETRI_PLACES=266, PETRI_TRANSITIONS=158} [2024-06-27 19:25:36,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-27 19:25:36,663 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 158 transitions, 1236 flow [2024-06-27 19:25:36,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:36,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:36,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:36,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 19:25:36,664 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:36,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash 614294340, now seen corresponding path program 9 times [2024-06-27 19:25:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494119450] [2024-06-27 19:25:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:38,698 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 19:25:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494119450] [2024-06-27 19:25:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494119450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:38,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535791743] [2024-06-27 19:25:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:38,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:38,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 158 transitions, 1236 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:38,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:38,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:38,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:39,438 INFO L124 PetriNetUnfolderBase]: 470/971 cut-off events. [2024-06-27 19:25:39,439 INFO L125 PetriNetUnfolderBase]: For 106543/106543 co-relation queries the response was YES. [2024-06-27 19:25:39,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 971 events. 470/971 cut-off events. For 106543/106543 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5204 event pairs, 127 based on Foata normal form. 6/976 useless extension candidates. Maximal degree in co-relation 5098. Up to 706 conditions per place. [2024-06-27 19:25:39,446 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 33 changer transitions 22/181 dead transitions. [2024-06-27 19:25:39,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 181 transitions, 1666 flow [2024-06-27 19:25:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 19:25:39,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:25:39,447 INFO L175 Difference]: Start difference. First operand has 266 places, 158 transitions, 1236 flow. Second operand 12 states and 126 transitions. [2024-06-27 19:25:39,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 181 transitions, 1666 flow [2024-06-27 19:25:39,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 181 transitions, 1596 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:39,636 INFO L231 Difference]: Finished difference. Result has 261 places, 147 transitions, 1150 flow [2024-06-27 19:25:39,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1150, PETRI_PLACES=261, PETRI_TRANSITIONS=147} [2024-06-27 19:25:39,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-27 19:25:39,637 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 147 transitions, 1150 flow [2024-06-27 19:25:39,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:39,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:39,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:39,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 19:25:39,637 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:39,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash 492666492, now seen corresponding path program 10 times [2024-06-27 19:25:39,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:39,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997841875] [2024-06-27 19:25:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:39,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997841875] [2024-06-27 19:25:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997841875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:41,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48103534] [2024-06-27 19:25:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:41,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:41,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 147 transitions, 1150 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:41,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:41,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:41,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:41,700 INFO L124 PetriNetUnfolderBase]: 442/919 cut-off events. [2024-06-27 19:25:41,701 INFO L125 PetriNetUnfolderBase]: For 99029/99029 co-relation queries the response was YES. [2024-06-27 19:25:41,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 919 events. 442/919 cut-off events. For 99029/99029 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4890 event pairs, 127 based on Foata normal form. 6/924 useless extension candidates. Maximal degree in co-relation 4840. Up to 732 conditions per place. [2024-06-27 19:25:41,709 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 121 selfloop transitions, 25 changer transitions 19/167 dead transitions. [2024-06-27 19:25:41,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 167 transitions, 1530 flow [2024-06-27 19:25:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 19:25:41,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:25:41,710 INFO L175 Difference]: Start difference. First operand has 261 places, 147 transitions, 1150 flow. Second operand 12 states and 120 transitions. [2024-06-27 19:25:41,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 167 transitions, 1530 flow [2024-06-27 19:25:41,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 167 transitions, 1454 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:41,873 INFO L231 Difference]: Finished difference. Result has 252 places, 140 transitions, 1087 flow [2024-06-27 19:25:41,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1087, PETRI_PLACES=252, PETRI_TRANSITIONS=140} [2024-06-27 19:25:41,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-27 19:25:41,873 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 140 transitions, 1087 flow [2024-06-27 19:25:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:41,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:41,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 19:25:41,873 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:41,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2074304290, now seen corresponding path program 11 times [2024-06-27 19:25:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075068036] [2024-06-27 19:25:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:43,720 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 19:25:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075068036] [2024-06-27 19:25:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075068036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:43,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:43,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642503890] [2024-06-27 19:25:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:43,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:43,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:43,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:43,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 140 transitions, 1087 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:43,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:43,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:43,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:44,353 INFO L124 PetriNetUnfolderBase]: 418/875 cut-off events. [2024-06-27 19:25:44,353 INFO L125 PetriNetUnfolderBase]: For 89527/89527 co-relation queries the response was YES. [2024-06-27 19:25:44,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 875 events. 418/875 cut-off events. For 89527/89527 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4612 event pairs, 121 based on Foata normal form. 6/880 useless extension candidates. Maximal degree in co-relation 4588. Up to 696 conditions per place. [2024-06-27 19:25:44,360 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 19 changer transitions 22/158 dead transitions. [2024-06-27 19:25:44,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 158 transitions, 1443 flow [2024-06-27 19:25:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 19:25:44,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-27 19:25:44,361 INFO L175 Difference]: Start difference. First operand has 252 places, 140 transitions, 1087 flow. Second operand 11 states and 112 transitions. [2024-06-27 19:25:44,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 158 transitions, 1443 flow [2024-06-27 19:25:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 158 transitions, 1372 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:44,518 INFO L231 Difference]: Finished difference. Result has 241 places, 130 transitions, 979 flow [2024-06-27 19:25:44,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=979, PETRI_PLACES=241, PETRI_TRANSITIONS=130} [2024-06-27 19:25:44,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-27 19:25:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 130 transitions, 979 flow [2024-06-27 19:25:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:44,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:44,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 19:25:44,519 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:44,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1958557018, now seen corresponding path program 12 times [2024-06-27 19:25:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:44,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671121916] [2024-06-27 19:25:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:44,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:46,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:46,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671121916] [2024-06-27 19:25:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671121916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:46,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:46,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:46,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612461017] [2024-06-27 19:25:46,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:46,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:46,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:46,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:46,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 130 transitions, 979 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:46,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:46,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:46,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:46,909 INFO L124 PetriNetUnfolderBase]: 386/809 cut-off events. [2024-06-27 19:25:46,909 INFO L125 PetriNetUnfolderBase]: For 80382/80382 co-relation queries the response was YES. [2024-06-27 19:25:46,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 809 events. 386/809 cut-off events. For 80382/80382 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4187 event pairs, 122 based on Foata normal form. 6/814 useless extension candidates. Maximal degree in co-relation 4239. Up to 662 conditions per place. [2024-06-27 19:25:46,914 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 21 changer transitions 12/146 dead transitions. [2024-06-27 19:25:46,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 146 transitions, 1309 flow [2024-06-27 19:25:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 19:25:46,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:25:46,915 INFO L175 Difference]: Start difference. First operand has 241 places, 130 transitions, 979 flow. Second operand 11 states and 110 transitions. [2024-06-27 19:25:46,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 146 transitions, 1309 flow [2024-06-27 19:25:47,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 146 transitions, 1249 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:47,033 INFO L231 Difference]: Finished difference. Result has 228 places, 126 transitions, 946 flow [2024-06-27 19:25:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=946, PETRI_PLACES=228, PETRI_TRANSITIONS=126} [2024-06-27 19:25:47,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-27 19:25:47,033 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 126 transitions, 946 flow [2024-06-27 19:25:47,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:47,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:47,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 19:25:47,034 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:47,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1807028494, now seen corresponding path program 13 times [2024-06-27 19:25:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:47,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549969621] [2024-06-27 19:25:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:48,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549969621] [2024-06-27 19:25:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549969621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:48,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:48,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:25:48,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56299644] [2024-06-27 19:25:48,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:25:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:48,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:25:48,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:25:48,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:48,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 126 transitions, 946 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:48,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:48,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:49,254 INFO L124 PetriNetUnfolderBase]: 372/783 cut-off events. [2024-06-27 19:25:49,254 INFO L125 PetriNetUnfolderBase]: For 69776/69776 co-relation queries the response was YES. [2024-06-27 19:25:49,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4136 conditions, 783 events. 372/783 cut-off events. For 69776/69776 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4017 event pairs, 118 based on Foata normal form. 6/788 useless extension candidates. Maximal degree in co-relation 4041. Up to 636 conditions per place. [2024-06-27 19:25:49,259 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 19 changer transitions 17/144 dead transitions. [2024-06-27 19:25:49,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 144 transitions, 1274 flow [2024-06-27 19:25:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-27 19:25:49,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-27 19:25:49,260 INFO L175 Difference]: Start difference. First operand has 228 places, 126 transitions, 946 flow. Second operand 12 states and 116 transitions. [2024-06-27 19:25:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 144 transitions, 1274 flow [2024-06-27 19:25:49,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 144 transitions, 1224 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:49,361 INFO L231 Difference]: Finished difference. Result has 223 places, 121 transitions, 914 flow [2024-06-27 19:25:49,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=914, PETRI_PLACES=223, PETRI_TRANSITIONS=121} [2024-06-27 19:25:49,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-27 19:25:49,362 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 121 transitions, 914 flow [2024-06-27 19:25:49,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:49,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:49,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 19:25:49,362 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:49,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1315140960, now seen corresponding path program 14 times [2024-06-27 19:25:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551180991] [2024-06-27 19:25:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551180991] [2024-06-27 19:25:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551180991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:50,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:50,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:50,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181228597] [2024-06-27 19:25:50,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:50,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:50,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:51,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:51,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 121 transitions, 914 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:51,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:51,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:51,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:51,452 INFO L124 PetriNetUnfolderBase]: 354/749 cut-off events. [2024-06-27 19:25:51,452 INFO L125 PetriNetUnfolderBase]: For 63826/63826 co-relation queries the response was YES. [2024-06-27 19:25:51,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3961 conditions, 749 events. 354/749 cut-off events. For 63826/63826 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3795 event pairs, 110 based on Foata normal form. 6/754 useless extension candidates. Maximal degree in co-relation 3869. Up to 397 conditions per place. [2024-06-27 19:25:51,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 83 selfloop transitions, 41 changer transitions 14/140 dead transitions. [2024-06-27 19:25:51,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 140 transitions, 1252 flow [2024-06-27 19:25:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:25:51,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:25:51,457 INFO L175 Difference]: Start difference. First operand has 223 places, 121 transitions, 914 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:25:51,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 140 transitions, 1252 flow [2024-06-27 19:25:51,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 140 transitions, 1204 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:51,565 INFO L231 Difference]: Finished difference. Result has 214 places, 116 transitions, 927 flow [2024-06-27 19:25:51,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=927, PETRI_PLACES=214, PETRI_TRANSITIONS=116} [2024-06-27 19:25:51,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-27 19:25:51,566 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 116 transitions, 927 flow [2024-06-27 19:25:51,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:51,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:51,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 19:25:51,566 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:51,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1096611122, now seen corresponding path program 15 times [2024-06-27 19:25:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486662709] [2024-06-27 19:25:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:53,268 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 19:25:53,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486662709] [2024-06-27 19:25:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486662709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:53,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:53,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774199758] [2024-06-27 19:25:53,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:53,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:53,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:53,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 116 transitions, 927 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:53,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:53,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:53,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:53,810 INFO L124 PetriNetUnfolderBase]: 323/684 cut-off events. [2024-06-27 19:25:53,810 INFO L125 PetriNetUnfolderBase]: For 45264/45264 co-relation queries the response was YES. [2024-06-27 19:25:53,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 684 events. 323/684 cut-off events. For 45264/45264 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3383 event pairs, 97 based on Foata normal form. 6/689 useless extension candidates. Maximal degree in co-relation 3291. Up to 354 conditions per place. [2024-06-27 19:25:53,814 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 42 changer transitions 11/135 dead transitions. [2024-06-27 19:25:53,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 135 transitions, 1249 flow [2024-06-27 19:25:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 19:25:53,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-27 19:25:53,815 INFO L175 Difference]: Start difference. First operand has 214 places, 116 transitions, 927 flow. Second operand 12 states and 118 transitions. [2024-06-27 19:25:53,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 135 transitions, 1249 flow [2024-06-27 19:25:53,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 135 transitions, 1157 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:53,887 INFO L231 Difference]: Finished difference. Result has 207 places, 113 transitions, 907 flow [2024-06-27 19:25:53,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=907, PETRI_PLACES=207, PETRI_TRANSITIONS=113} [2024-06-27 19:25:53,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-27 19:25:53,888 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 113 transitions, 907 flow [2024-06-27 19:25:53,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:53,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:53,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 19:25:53,888 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:53,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1096438142, now seen corresponding path program 16 times [2024-06-27 19:25:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:53,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214411951] [2024-06-27 19:25:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214411951] [2024-06-27 19:25:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214411951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410441673] [2024-06-27 19:25:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:55,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:55,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:55,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:55,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:55,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 113 transitions, 907 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:55,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:55,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:55,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:56,173 INFO L124 PetriNetUnfolderBase]: 313/666 cut-off events. [2024-06-27 19:25:56,173 INFO L125 PetriNetUnfolderBase]: For 39584/39584 co-relation queries the response was YES. [2024-06-27 19:25:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 666 events. 313/666 cut-off events. For 39584/39584 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3259 event pairs, 81 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 3167. Up to 453 conditions per place. [2024-06-27 19:25:56,178 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 31 changer transitions 14/134 dead transitions. [2024-06-27 19:25:56,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 134 transitions, 1237 flow [2024-06-27 19:25:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 19:25:56,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-27 19:25:56,179 INFO L175 Difference]: Start difference. First operand has 207 places, 113 transitions, 907 flow. Second operand 12 states and 121 transitions. [2024-06-27 19:25:56,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 134 transitions, 1237 flow [2024-06-27 19:25:56,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 134 transitions, 1147 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:56,244 INFO L231 Difference]: Finished difference. Result has 202 places, 109 transitions, 864 flow [2024-06-27 19:25:56,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=864, PETRI_PLACES=202, PETRI_TRANSITIONS=109} [2024-06-27 19:25:56,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 19:25:56,244 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 109 transitions, 864 flow [2024-06-27 19:25:56,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:56,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:56,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:56,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 19:25:56,245 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:56,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -731084854, now seen corresponding path program 17 times [2024-06-27 19:25:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359936342] [2024-06-27 19:25:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359936342] [2024-06-27 19:25:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359936342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:58,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:58,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:58,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383498073] [2024-06-27 19:25:58,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:58,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:58,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 109 transitions, 864 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:58,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:58,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:58,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:58,988 INFO L124 PetriNetUnfolderBase]: 299/640 cut-off events. [2024-06-27 19:25:58,989 INFO L125 PetriNetUnfolderBase]: For 36850/36850 co-relation queries the response was YES. [2024-06-27 19:25:58,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 640 events. 299/640 cut-off events. For 36850/36850 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3103 event pairs, 77 based on Foata normal form. 6/645 useless extension candidates. Maximal degree in co-relation 3045. Up to 427 conditions per place. [2024-06-27 19:25:58,993 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 28 changer transitions 20/130 dead transitions. [2024-06-27 19:25:58,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 130 transitions, 1184 flow [2024-06-27 19:25:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 19:25:58,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:25:58,993 INFO L175 Difference]: Start difference. First operand has 202 places, 109 transitions, 864 flow. Second operand 12 states and 120 transitions. [2024-06-27 19:25:58,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 130 transitions, 1184 flow [2024-06-27 19:25:59,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 130 transitions, 1114 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:59,048 INFO L231 Difference]: Finished difference. Result has 196 places, 103 transitions, 823 flow [2024-06-27 19:25:59,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=823, PETRI_PLACES=196, PETRI_TRANSITIONS=103} [2024-06-27 19:25:59,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 19:25:59,048 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 103 transitions, 823 flow [2024-06-27 19:25:59,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:59,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:59,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:59,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 19:25:59,049 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:59,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1816645816, now seen corresponding path program 18 times [2024-06-27 19:25:59,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:59,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544068460] [2024-06-27 19:25:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:59,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:00,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:00,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544068460] [2024-06-27 19:26:00,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544068460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:00,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:00,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144009764] [2024-06-27 19:26:00,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:00,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:00,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:00,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:00,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 103 transitions, 823 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:00,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:00,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:00,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:01,093 INFO L124 PetriNetUnfolderBase]: 281/602 cut-off events. [2024-06-27 19:26:01,093 INFO L125 PetriNetUnfolderBase]: For 33042/33042 co-relation queries the response was YES. [2024-06-27 19:26:01,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 602 events. 281/602 cut-off events. For 33042/33042 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2852 event pairs, 73 based on Foata normal form. 6/607 useless extension candidates. Maximal degree in co-relation 2877. Up to 286 conditions per place. [2024-06-27 19:26:01,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 41 changer transitions 11/122 dead transitions. [2024-06-27 19:26:01,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 122 transitions, 1117 flow [2024-06-27 19:26:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 19:26:01,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-27 19:26:01,097 INFO L175 Difference]: Start difference. First operand has 196 places, 103 transitions, 823 flow. Second operand 12 states and 119 transitions. [2024-06-27 19:26:01,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 122 transitions, 1117 flow [2024-06-27 19:26:01,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 122 transitions, 1049 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:26:01,143 INFO L231 Difference]: Finished difference. Result has 186 places, 98 transitions, 810 flow [2024-06-27 19:26:01,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=810, PETRI_PLACES=186, PETRI_TRANSITIONS=98} [2024-06-27 19:26:01,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-27 19:26:01,143 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 98 transitions, 810 flow [2024-06-27 19:26:01,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:01,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:01,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:01,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 19:26:01,143 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:01,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1502175700, now seen corresponding path program 19 times [2024-06-27 19:26:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715520137] [2024-06-27 19:26:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:02,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715520137] [2024-06-27 19:26:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715520137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:02,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:02,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232939150] [2024-06-27 19:26:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:02,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:02,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:03,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:03,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 98 transitions, 810 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:03,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:03,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:03,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:03,337 INFO L124 PetriNetUnfolderBase]: 252/539 cut-off events. [2024-06-27 19:26:03,337 INFO L125 PetriNetUnfolderBase]: For 20602/20602 co-relation queries the response was YES. [2024-06-27 19:26:03,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 539 events. 252/539 cut-off events. For 20602/20602 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2471 event pairs, 112 based on Foata normal form. 6/544 useless extension candidates. Maximal degree in co-relation 2373. Up to 473 conditions per place. [2024-06-27 19:26:03,340 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 5 changer transitions 20/114 dead transitions. [2024-06-27 19:26:03,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 114 transitions, 1072 flow [2024-06-27 19:26:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-27 19:26:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-27 19:26:03,341 INFO L175 Difference]: Start difference. First operand has 186 places, 98 transitions, 810 flow. Second operand 12 states and 109 transitions. [2024-06-27 19:26:03,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 114 transitions, 1072 flow [2024-06-27 19:26:03,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 114 transitions, 980 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-27 19:26:03,371 INFO L231 Difference]: Finished difference. Result has 178 places, 90 transitions, 682 flow [2024-06-27 19:26:03,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=682, PETRI_PLACES=178, PETRI_TRANSITIONS=90} [2024-06-27 19:26:03,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-27 19:26:03,371 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 90 transitions, 682 flow [2024-06-27 19:26:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:03,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:03,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:03,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 19:26:03,371 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:03,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 504573624, now seen corresponding path program 20 times [2024-06-27 19:26:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:03,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652915863] [2024-06-27 19:26:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:03,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652915863] [2024-06-27 19:26:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652915863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204505585] [2024-06-27 19:26:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:05,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:05,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:05,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 90 transitions, 682 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:05,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:05,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:05,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:06,128 INFO L124 PetriNetUnfolderBase]: 239/508 cut-off events. [2024-06-27 19:26:06,128 INFO L125 PetriNetUnfolderBase]: For 17096/17096 co-relation queries the response was YES. [2024-06-27 19:26:06,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 508 events. 239/508 cut-off events. For 17096/17096 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2255 event pairs, 62 based on Foata normal form. 6/513 useless extension candidates. Maximal degree in co-relation 2137. Up to 291 conditions per place. [2024-06-27 19:26:06,131 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 31 changer transitions 13/111 dead transitions. [2024-06-27 19:26:06,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 111 transitions, 968 flow [2024-06-27 19:26:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 19:26:06,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-27 19:26:06,131 INFO L175 Difference]: Start difference. First operand has 178 places, 90 transitions, 682 flow. Second operand 12 states and 123 transitions. [2024-06-27 19:26:06,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 111 transitions, 968 flow [2024-06-27 19:26:06,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 111 transitions, 940 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 19:26:06,157 INFO L231 Difference]: Finished difference. Result has 163 places, 85 transitions, 688 flow [2024-06-27 19:26:06,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=688, PETRI_PLACES=163, PETRI_TRANSITIONS=85} [2024-06-27 19:26:06,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-27 19:26:06,157 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 85 transitions, 688 flow [2024-06-27 19:26:06,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:06,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:06,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:06,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 19:26:06,158 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:06,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1696205974, now seen corresponding path program 21 times [2024-06-27 19:26:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:06,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647247309] [2024-06-27 19:26:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647247309] [2024-06-27 19:26:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647247309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:07,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:07,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228146219] [2024-06-27 19:26:07,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:07,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:07,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:07,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 85 transitions, 688 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:07,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:08,368 INFO L124 PetriNetUnfolderBase]: 223/480 cut-off events. [2024-06-27 19:26:08,368 INFO L125 PetriNetUnfolderBase]: For 13580/13580 co-relation queries the response was YES. [2024-06-27 19:26:08,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 480 events. 223/480 cut-off events. For 13580/13580 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2109 event pairs, 66 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 2037. Up to 333 conditions per place. [2024-06-27 19:26:08,371 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 16 changer transitions 18/101 dead transitions. [2024-06-27 19:26:08,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 101 transitions, 924 flow [2024-06-27 19:26:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:26:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:26:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 19:26:08,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-27 19:26:08,371 INFO L175 Difference]: Start difference. First operand has 163 places, 85 transitions, 688 flow. Second operand 11 states and 106 transitions. [2024-06-27 19:26:08,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 101 transitions, 924 flow [2024-06-27 19:26:08,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 101 transitions, 851 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:26:08,392 INFO L231 Difference]: Finished difference. Result has 156 places, 79 transitions, 618 flow [2024-06-27 19:26:08,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=618, PETRI_PLACES=156, PETRI_TRANSITIONS=79} [2024-06-27 19:26:08,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-27 19:26:08,392 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 79 transitions, 618 flow [2024-06-27 19:26:08,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:08,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:08,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:08,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 19:26:08,393 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:08,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash 236196024, now seen corresponding path program 22 times [2024-06-27 19:26:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:08,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520884700] [2024-06-27 19:26:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:10,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:10,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520884700] [2024-06-27 19:26:10,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520884700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:10,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700980622] [2024-06-27 19:26:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:10,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:10,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:10,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 79 transitions, 618 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:10,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:10,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:10,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:10,668 INFO L124 PetriNetUnfolderBase]: 203/440 cut-off events. [2024-06-27 19:26:10,668 INFO L125 PetriNetUnfolderBase]: For 12154/12154 co-relation queries the response was YES. [2024-06-27 19:26:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 440 events. 203/440 cut-off events. For 12154/12154 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1869 event pairs, 54 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 1861. Up to 229 conditions per place. [2024-06-27 19:26:10,670 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 24 changer transitions 20/99 dead transitions. [2024-06-27 19:26:10,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 99 transitions, 870 flow [2024-06-27 19:26:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 19:26:10,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-27 19:26:10,671 INFO L175 Difference]: Start difference. First operand has 156 places, 79 transitions, 618 flow. Second operand 12 states and 118 transitions. [2024-06-27 19:26:10,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 99 transitions, 870 flow [2024-06-27 19:26:10,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 99 transitions, 826 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:26:10,686 INFO L231 Difference]: Finished difference. Result has 147 places, 70 transitions, 556 flow [2024-06-27 19:26:10,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=556, PETRI_PLACES=147, PETRI_TRANSITIONS=70} [2024-06-27 19:26:10,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-27 19:26:10,686 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 70 transitions, 556 flow [2024-06-27 19:26:10,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:10,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:10,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:10,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 19:26:10,687 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:10,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:10,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1695073954, now seen corresponding path program 23 times [2024-06-27 19:26:10,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:10,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733901035] [2024-06-27 19:26:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:10,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:12,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:12,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733901035] [2024-06-27 19:26:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733901035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:12,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:12,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:12,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675876627] [2024-06-27 19:26:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:12,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:12,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 70 transitions, 556 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:12,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:12,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:12,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:12,790 INFO L124 PetriNetUnfolderBase]: 178/389 cut-off events. [2024-06-27 19:26:12,791 INFO L125 PetriNetUnfolderBase]: For 9126/9126 co-relation queries the response was YES. [2024-06-27 19:26:12,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 389 events. 178/389 cut-off events. For 9126/9126 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1572 event pairs, 54 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 1641. Up to 217 conditions per place. [2024-06-27 19:26:12,793 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 24 changer transitions 13/88 dead transitions. [2024-06-27 19:26:12,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 88 transitions, 778 flow [2024-06-27 19:26:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-27 19:26:12,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-27 19:26:12,794 INFO L175 Difference]: Start difference. First operand has 147 places, 70 transitions, 556 flow. Second operand 12 states and 114 transitions. [2024-06-27 19:26:12,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 88 transitions, 778 flow [2024-06-27 19:26:12,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 88 transitions, 720 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:26:12,805 INFO L231 Difference]: Finished difference. Result has 136 places, 65 transitions, 516 flow [2024-06-27 19:26:12,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=516, PETRI_PLACES=136, PETRI_TRANSITIONS=65} [2024-06-27 19:26:12,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-27 19:26:12,805 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 65 transitions, 516 flow [2024-06-27 19:26:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:12,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:12,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:12,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 19:26:12,806 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:12,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash 747502114, now seen corresponding path program 24 times [2024-06-27 19:26:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:12,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801254104] [2024-06-27 19:26:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:12,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:14,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801254104] [2024-06-27 19:26:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801254104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:14,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945370455] [2024-06-27 19:26:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:14,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:14,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:14,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 65 transitions, 516 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:14,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:14,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:14,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:15,033 INFO L124 PetriNetUnfolderBase]: 162/361 cut-off events. [2024-06-27 19:26:15,034 INFO L125 PetriNetUnfolderBase]: For 7024/7024 co-relation queries the response was YES. [2024-06-27 19:26:15,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 361 events. 162/361 cut-off events. For 7024/7024 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1432 event pairs, 52 based on Foata normal form. 6/366 useless extension candidates. Maximal degree in co-relation 1497. Up to 197 conditions per place. [2024-06-27 19:26:15,035 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 45 selfloop transitions, 20 changer transitions 16/83 dead transitions. [2024-06-27 19:26:15,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 83 transitions, 726 flow [2024-06-27 19:26:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 19:26:15,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-27 19:26:15,036 INFO L175 Difference]: Start difference. First operand has 136 places, 65 transitions, 516 flow. Second operand 12 states and 113 transitions. [2024-06-27 19:26:15,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 83 transitions, 726 flow [2024-06-27 19:26:15,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 83 transitions, 662 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:26:15,044 INFO L231 Difference]: Finished difference. Result has 130 places, 59 transitions, 457 flow [2024-06-27 19:26:15,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=457, PETRI_PLACES=130, PETRI_TRANSITIONS=59} [2024-06-27 19:26:15,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-27 19:26:15,045 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 59 transitions, 457 flow [2024-06-27 19:26:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:15,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:15,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:15,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 19:26:15,045 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:15,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash -733710630, now seen corresponding path program 25 times [2024-06-27 19:26:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033731780] [2024-06-27 19:26:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:16,939 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 19:26:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033731780] [2024-06-27 19:26:16,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033731780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:16,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:16,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:26:16,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118806661] [2024-06-27 19:26:16,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:16,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:26:16,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:26:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:26:17,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:17,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 59 transitions, 457 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:17,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:17,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:17,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:17,354 INFO L124 PetriNetUnfolderBase]: 150/341 cut-off events. [2024-06-27 19:26:17,354 INFO L125 PetriNetUnfolderBase]: For 6044/6044 co-relation queries the response was YES. [2024-06-27 19:26:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 341 events. 150/341 cut-off events. For 6044/6044 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1335 event pairs, 52 based on Foata normal form. 6/346 useless extension candidates. Maximal degree in co-relation 1363. Up to 196 conditions per place. [2024-06-27 19:26:17,355 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 16 changer transitions 18/77 dead transitions. [2024-06-27 19:26:17,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 77 transitions, 656 flow [2024-06-27 19:26:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:26:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:26:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 19:26:17,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29829545454545453 [2024-06-27 19:26:17,356 INFO L175 Difference]: Start difference. First operand has 130 places, 59 transitions, 457 flow. Second operand 11 states and 105 transitions. [2024-06-27 19:26:17,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 77 transitions, 656 flow [2024-06-27 19:26:17,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 77 transitions, 608 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:26:17,364 INFO L231 Difference]: Finished difference. Result has 123 places, 55 transitions, 408 flow [2024-06-27 19:26:17,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=408, PETRI_PLACES=123, PETRI_TRANSITIONS=55} [2024-06-27 19:26:17,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 19:26:17,364 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 55 transitions, 408 flow [2024-06-27 19:26:17,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:17,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:17,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:17,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 19:26:17,364 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:17,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:17,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1690432324, now seen corresponding path program 26 times [2024-06-27 19:26:17,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:17,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066815263] [2024-06-27 19:26:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:17,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:19,204 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 19:26:19,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066815263] [2024-06-27 19:26:19,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066815263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:19,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:19,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288955049] [2024-06-27 19:26:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:19,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:19,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 55 transitions, 408 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:19,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:19,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:19,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:19,800 INFO L124 PetriNetUnfolderBase]: 132/303 cut-off events. [2024-06-27 19:26:19,800 INFO L125 PetriNetUnfolderBase]: For 4722/4722 co-relation queries the response was YES. [2024-06-27 19:26:19,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 303 events. 132/303 cut-off events. For 4722/4722 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1130 event pairs, 42 based on Foata normal form. 6/308 useless extension candidates. Maximal degree in co-relation 1201. Up to 161 conditions per place. [2024-06-27 19:26:19,801 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 34 selfloop transitions, 14 changer transitions 22/72 dead transitions. [2024-06-27 19:26:19,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 72 transitions, 595 flow [2024-06-27 19:26:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 19:26:19,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-27 19:26:19,802 INFO L175 Difference]: Start difference. First operand has 123 places, 55 transitions, 408 flow. Second operand 12 states and 112 transitions. [2024-06-27 19:26:19,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 72 transitions, 595 flow [2024-06-27 19:26:19,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 72 transitions, 553 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:26:19,807 INFO L231 Difference]: Finished difference. Result has 117 places, 45 transitions, 333 flow [2024-06-27 19:26:19,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=333, PETRI_PLACES=117, PETRI_TRANSITIONS=45} [2024-06-27 19:26:19,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-27 19:26:19,807 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 45 transitions, 333 flow [2024-06-27 19:26:19,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:19,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:19,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:19,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 19:26:19,808 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:19,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:19,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1299225520, now seen corresponding path program 27 times [2024-06-27 19:26:19,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:19,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353668732] [2024-06-27 19:26:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:19,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353668732] [2024-06-27 19:26:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353668732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:21,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:21,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885134487] [2024-06-27 19:26:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:21,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:21,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 45 transitions, 333 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:21,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:21,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:21,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:21,740 INFO L124 PetriNetUnfolderBase]: 125/282 cut-off events. [2024-06-27 19:26:21,740 INFO L125 PetriNetUnfolderBase]: For 4683/4685 co-relation queries the response was YES. [2024-06-27 19:26:21,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 282 events. 125/282 cut-off events. For 4683/4685 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 998 event pairs, 34 based on Foata normal form. 8/289 useless extension candidates. Maximal degree in co-relation 1114. Up to 166 conditions per place. [2024-06-27 19:26:21,742 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 34 selfloop transitions, 8 changer transitions 26/70 dead transitions. [2024-06-27 19:26:21,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 70 transitions, 547 flow [2024-06-27 19:26:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:26:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:26:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 118 transitions. [2024-06-27 19:26:21,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28365384615384615 [2024-06-27 19:26:21,742 INFO L175 Difference]: Start difference. First operand has 117 places, 45 transitions, 333 flow. Second operand 13 states and 118 transitions. [2024-06-27 19:26:21,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 70 transitions, 547 flow [2024-06-27 19:26:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 70 transitions, 483 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-06-27 19:26:21,745 INFO L231 Difference]: Finished difference. Result has 101 places, 39 transitions, 252 flow [2024-06-27 19:26:21,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=101, PETRI_TRANSITIONS=39} [2024-06-27 19:26:21,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-27 19:26:21,746 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 39 transitions, 252 flow [2024-06-27 19:26:21,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:21,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:21,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:21,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 19:26:21,746 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:21,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash 473253942, now seen corresponding path program 28 times [2024-06-27 19:26:21,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646946506] [2024-06-27 19:26:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:23,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646946506] [2024-06-27 19:26:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646946506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:23,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:23,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403055379] [2024-06-27 19:26:23,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:23,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:23,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:23,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 39 transitions, 252 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:23,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:23,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:23,986 INFO L124 PetriNetUnfolderBase]: 82/191 cut-off events. [2024-06-27 19:26:23,986 INFO L125 PetriNetUnfolderBase]: For 1386/1386 co-relation queries the response was YES. [2024-06-27 19:26:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 191 events. 82/191 cut-off events. For 1386/1386 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 557 event pairs, 17 based on Foata normal form. 6/196 useless extension candidates. Maximal degree in co-relation 657. Up to 62 conditions per place. [2024-06-27 19:26:23,987 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 21 selfloop transitions, 9 changer transitions 26/58 dead transitions. [2024-06-27 19:26:23,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 58 transitions, 417 flow [2024-06-27 19:26:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:26:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:26:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 114 transitions. [2024-06-27 19:26:23,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27403846153846156 [2024-06-27 19:26:23,987 INFO L175 Difference]: Start difference. First operand has 101 places, 39 transitions, 252 flow. Second operand 13 states and 114 transitions. [2024-06-27 19:26:23,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 58 transitions, 417 flow [2024-06-27 19:26:23,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 58 transitions, 384 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:26:23,990 INFO L231 Difference]: Finished difference. Result has 92 places, 26 transitions, 158 flow [2024-06-27 19:26:23,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=158, PETRI_PLACES=92, PETRI_TRANSITIONS=26} [2024-06-27 19:26:23,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-27 19:26:23,990 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 26 transitions, 158 flow [2024-06-27 19:26:23,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:23,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:23,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:23,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 19:26:23,990 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:23,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash -860848784, now seen corresponding path program 29 times [2024-06-27 19:26:23,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:23,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487774149] [2024-06-27 19:26:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:25,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:25,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487774149] [2024-06-27 19:26:25,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487774149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:25,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:25,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-27 19:26:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519693302] [2024-06-27 19:26:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:25,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 19:26:25,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 19:26:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-27 19:26:25,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:25,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 26 transitions, 158 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:25,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:25,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:25,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:26,168 INFO L124 PetriNetUnfolderBase]: 39/96 cut-off events. [2024-06-27 19:26:26,168 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2024-06-27 19:26:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 96 events. 39/96 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 172 event pairs, 0 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 292. Up to 32 conditions per place. [2024-06-27 19:26:26,169 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-06-27 19:26:26,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 36 transitions, 222 flow [2024-06-27 19:26:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 93 transitions. [2024-06-27 19:26:26,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2421875 [2024-06-27 19:26:26,169 INFO L175 Difference]: Start difference. First operand has 92 places, 26 transitions, 158 flow. Second operand 12 states and 93 transitions. [2024-06-27 19:26:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 36 transitions, 222 flow [2024-06-27 19:26:26,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 36 transitions, 170 flow, removed 1 selfloop flow, removed 21 redundant places. [2024-06-27 19:26:26,170 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-06-27 19:26:26,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-06-27 19:26:26,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-27 19:26:26,170 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-06-27 19:26:26,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:26,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 19:26:26,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 19:26:26,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 19:26:26,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 19:26:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 19:26:26,176 INFO L445 BasicCegarLoop]: Path program histogram: [34, 29, 22, 22, 17, 17, 12, 11, 7, 7, 7, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:26,178 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:26:26,178 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:26:26,181 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 19:26:26,181 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 19:26:26,182 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:26:26 BasicIcfg [2024-06-27 19:26:26,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:26:26,182 INFO L158 Benchmark]: Toolchain (without parser) took 506156.97ms. Allocated memory was 157.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 120.8MB in the beginning and 1.1GB in the end (delta: -974.0MB). Peak memory consumption was 617.8MB. Max. memory is 16.1GB. [2024-06-27 19:26:26,183 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:26:26,183 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 157.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:26:26,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.70ms. Allocated memory is still 157.3MB. Free memory was 120.8MB in the beginning and 84.1MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-27 19:26:26,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.83ms. Allocated memory is still 157.3MB. Free memory was 83.0MB in the beginning and 79.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 19:26:26,183 INFO L158 Benchmark]: Boogie Preprocessor took 53.96ms. Allocated memory is still 157.3MB. Free memory was 79.9MB in the beginning and 75.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 19:26:26,184 INFO L158 Benchmark]: RCFGBuilder took 743.26ms. Allocated memory is still 157.3MB. Free memory was 75.7MB in the beginning and 58.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-27 19:26:26,184 INFO L158 Benchmark]: TraceAbstraction took 504718.68ms. Allocated memory was 157.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 57.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 556.4MB. Max. memory is 16.1GB. [2024-06-27 19:26:26,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 157.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.70ms. Allocated memory is still 157.3MB. Free memory was 120.8MB in the beginning and 84.1MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.83ms. Allocated memory is still 157.3MB. Free memory was 83.0MB in the beginning and 79.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.96ms. Allocated memory is still 157.3MB. Free memory was 79.9MB in the beginning and 75.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 743.26ms. Allocated memory is still 157.3MB. Free memory was 75.7MB in the beginning and 58.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 504718.68ms. Allocated memory was 157.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 57.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 556.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 838]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 839]: 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, 52 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: 504.6s, OverallIterations: 229, TraceHistogramMax: 1, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 220.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13206 SdHoareTripleChecker+Valid, 70.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11498 mSDsluCounter, 9085 SdHoareTripleChecker+Invalid, 61.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7737 mSDsCounter, 4752 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115053 IncrementalHoareTripleChecker+Invalid, 119805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4752 mSolverCounterUnsat, 1348 mSDtfsCounter, 115053 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3177 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 3148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8369 ImplicationChecksByTransitivity, 92.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3987occurred in iteration=139, InterpolantAutomatonStates: 2326, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 280.5s InterpolantComputationTime, 3975 NumberOfCodeBlocks, 3975 NumberOfCodeBlocksAsserted, 229 NumberOfCheckSat, 3746 ConstructedInterpolants, 0 QuantifiedInterpolants, 188733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 229 InterpolantComputations, 229 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 19:26:26,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE