./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/lazy01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:12:46,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:12:46,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:12:46,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:12:46,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:12:46,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:12:46,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:12:46,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:12:46,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:12:46,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:12:46,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:12:46,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:12:46,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:12:46,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:12:46,315 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:12:46,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:12:46,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:12:46,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:12:46,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:12:46,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:12:46,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:12:46,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:12:46,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:12:46,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:12:46,317 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:12:46,318 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:12:46,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:12:46,318 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:12:46,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:12:46,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:12:46,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:12:46,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:12:46,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:12:46,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:12:46,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:12:46,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:12:46,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:12:46,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:12:46,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:12:46,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:12:46,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:12:46,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:12:46,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:12:46,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:12:46,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:12:46,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:12:46,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:12:46,571 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:12:46,571 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:12:46,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-01-31 16:12:47,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:12:47,737 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:12:47,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-01-31 16:12:47,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58016c4f2/2d92f1ea9c904fd7b510b06c5dc20b83/FLAG58e766b03 [2024-01-31 16:12:47,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58016c4f2/2d92f1ea9c904fd7b510b06c5dc20b83 [2024-01-31 16:12:47,767 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:12:47,768 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:12:47,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml [2024-01-31 16:12:47,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:12:47,838 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:12:47,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:12:47,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:12:47,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:12:47,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:12:47" (1/2) ... [2024-01-31 16:12:47,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392e9129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:12:47, skipping insertion in model container [2024-01-31 16:12:47,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:12:47" (1/2) ... [2024-01-31 16:12:47,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@179e27c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:12:47, skipping insertion in model container [2024-01-31 16:12:47,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:12:47" (2/2) ... [2024-01-31 16:12:47,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392e9129 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:47, skipping insertion in model container [2024-01-31 16:12:47,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:12:47" (2/2) ... [2024-01-31 16:12:47,856 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:12:47,897 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:12:47,898 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (0 <= data) && ((unsigned long )arg == 0UL) [2024-01-31 16:12:47,898 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] (2 <= data) && ((unsigned long )arg == 0UL) [2024-01-31 16:12:47,898 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (1 <= data) && ((unsigned long )arg == 0UL) [2024-01-31 16:12:47,898 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-31 16:12:47,898 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-01-31 16:12:47,899 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (0 <= data) && ((unsigned long )arg == 0UL) [2024-01-31 16:12:47,899 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-31 16:12:47,899 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (unsigned long )arg == 0UL [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] ((3 <= data) && ((unsigned long )arg == 0UL)) && (data != 0) [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )arg == 0UL [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant after [L722-L722] ((3 <= data) && ((unsigned long )arg == 0UL)) && (data != 0) [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] ((0 <= data) && (data <= 2)) && ((unsigned long )arg == 0UL) [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] data == 0 [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] data == 0 [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] (unsigned long )arg == 0UL [2024-01-31 16:12:47,900 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (0 <= data) && ((unsigned long )arg == 0UL) [2024-01-31 16:12:47,928 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:12:48,186 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2024-01-31 16:12:48,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:12:48,213 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:12:48,290 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:12:48,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:12:48,349 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:12:48,350 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48 WrapperNode [2024-01-31 16:12:48,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:12:48,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:12:48,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:12:48,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:12:48,357 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 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,384 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 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,398 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2024-01-31 16:12:48,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:12:48,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:12:48,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:12:48,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:12:48,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,440 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 5, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2024-01-31 16:12:48,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:12:48,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:12:48,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:12:48,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:12:48,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (1/1) ... [2024-01-31 16:12:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:12:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:12:48,491 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) [2024-01-31 16:12:48,496 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 [2024-01-31 16:12:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:12:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:12:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:12:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:12:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:12:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:12:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:12:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:12:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:12:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:12:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:12:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:12:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:12:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:12:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:12:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:12:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:12:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:12:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:12:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:12:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:12:48,529 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:12:48,666 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:12:48,668 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:12:48,906 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:12:48,907 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:12:49,006 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:12:49,006 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:12:49,019 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:12:49 BoogieIcfgContainer [2024-01-31 16:12:49,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:12:49,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:12:49,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:12:49,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:12:49,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:12:47" (1/4) ... [2024-01-31 16:12:49,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c43f8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:12:49, skipping insertion in model container [2024-01-31 16:12:49,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:12:47" (2/4) ... [2024-01-31 16:12:49,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c43f8e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:12:49, skipping insertion in model container [2024-01-31 16:12:49,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:48" (3/4) ... [2024-01-31 16:12:49,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c43f8e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:12:49, skipping insertion in model container [2024-01-31 16:12:49,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:12:49" (4/4) ... [2024-01-31 16:12:49,028 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-01-31 16:12:49,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:12:49,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-01-31 16:12:49,044 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:12:49,134 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:12:49,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 65 transitions, 151 flow [2024-01-31 16:12:49,216 INFO L124 PetriNetUnfolderBase]: 1/62 cut-off events. [2024-01-31 16:12:49,217 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:12:49,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 1/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-01-31 16:12:49,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 65 transitions, 151 flow [2024-01-31 16:12:49,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 135 flow [2024-01-31 16:12:49,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:12:49,234 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;@2d2168a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:12:49,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-01-31 16:12:49,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:12:49,236 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:12:49,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:12:49,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:49,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:12:49,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:49,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash 8284, now seen corresponding path program 1 times [2024-01-31 16:12:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:49,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-01-31 16:12:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:49,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:49,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:49,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-01-31 16:12:49,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083638961] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:49,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:49,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:12:49,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160207297] [2024-01-31 16:12:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:49,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:12:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:12:49,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:12:49,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 65 [2024-01-31 16:12:49,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:49,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:49,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 65 [2024-01-31 16:12:49,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:49,729 INFO L124 PetriNetUnfolderBase]: 1085/2103 cut-off events. [2024-01-31 16:12:49,729 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-01-31 16:12:49,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 2103 events. 1085/2103 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14200 event pairs, 407 based on Foata normal form. 82/2132 useless extension candidates. Maximal degree in co-relation 3417. Up to 1575 conditions per place. [2024-01-31 16:12:49,744 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 37 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-01-31 16:12:49,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 239 flow [2024-01-31 16:12:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-01-31 16:12:49,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-01-31 16:12:49,761 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 135 flow. Second operand 3 states and 140 transitions. [2024-01-31 16:12:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 239 flow [2024-01-31 16:12:49,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 227 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:12:49,770 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 139 flow [2024-01-31 16:12:49,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-01-31 16:12:49,774 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2024-01-31 16:12:49,774 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 139 flow [2024-01-31 16:12:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:49,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:49,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:12:49,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:12:49,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:49,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash -931074202, now seen corresponding path program 1 times [2024-01-31 16:12:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163114375] [2024-01-31 16:12:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163114375] [2024-01-31 16:12:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163114375] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599735749] [2024-01-31 16:12:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:49,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 65 [2024-01-31 16:12:49,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:49,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:49,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 65 [2024-01-31 16:12:49,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:50,083 INFO L124 PetriNetUnfolderBase]: 654/1511 cut-off events. [2024-01-31 16:12:50,084 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-01-31 16:12:50,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1511 events. 654/1511 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10802 event pairs, 144 based on Foata normal form. 52/1424 useless extension candidates. Maximal degree in co-relation 1195. Up to 931 conditions per place. [2024-01-31 16:12:50,094 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 37 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-01-31 16:12:50,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 243 flow [2024-01-31 16:12:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-01-31 16:12:50,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884615384615385 [2024-01-31 16:12:50,099 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 139 flow. Second operand 4 states and 179 transitions. [2024-01-31 16:12:50,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 243 flow [2024-01-31 16:12:50,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:12:50,102 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 136 flow [2024-01-31 16:12:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-01-31 16:12:50,102 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2024-01-31 16:12:50,103 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 136 flow [2024-01-31 16:12:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:50,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:50,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:12:50,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:50,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1410395163, now seen corresponding path program 1 times [2024-01-31 16:12:50,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523079092] [2024-01-31 16:12:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:50,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:50,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523079092] [2024-01-31 16:12:50,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523079092] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:50,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:50,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863260231] [2024-01-31 16:12:50,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:50,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 65 [2024-01-31 16:12:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:50,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 65 [2024-01-31 16:12:50,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:50,414 INFO L124 PetriNetUnfolderBase]: 665/1530 cut-off events. [2024-01-31 16:12:50,414 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-01-31 16:12:50,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 1530 events. 665/1530 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10822 event pairs, 141 based on Foata normal form. 58/1444 useless extension candidates. Maximal degree in co-relation 2787. Up to 916 conditions per place. [2024-01-31 16:12:50,421 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 41 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-01-31 16:12:50,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 257 flow [2024-01-31 16:12:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-01-31 16:12:50,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7038461538461539 [2024-01-31 16:12:50,424 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 136 flow. Second operand 4 states and 183 transitions. [2024-01-31 16:12:50,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 257 flow [2024-01-31 16:12:50,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:50,426 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 133 flow [2024-01-31 16:12:50,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-01-31 16:12:50,427 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2024-01-31 16:12:50,428 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 133 flow [2024-01-31 16:12:50,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:50,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:50,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:50,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:12:50,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:50,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash -732458266, now seen corresponding path program 1 times [2024-01-31 16:12:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172258438] [2024-01-31 16:12:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:50,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:50,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:50,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172258438] [2024-01-31 16:12:50,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172258438] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:50,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:50,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:50,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059060333] [2024-01-31 16:12:50,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:50,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:50,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:50,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:50,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:12:50,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:50,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:50,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:12:50,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:50,777 INFO L124 PetriNetUnfolderBase]: 1519/2774 cut-off events. [2024-01-31 16:12:50,778 INFO L125 PetriNetUnfolderBase]: For 269/276 co-relation queries the response was YES. [2024-01-31 16:12:50,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 2774 events. 1519/2774 cut-off events. For 269/276 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18521 event pairs, 489 based on Foata normal form. 25/2746 useless extension candidates. Maximal degree in co-relation 4895. Up to 2105 conditions per place. [2024-01-31 16:12:50,790 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 50 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-01-31 16:12:50,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 300 flow [2024-01-31 16:12:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-01-31 16:12:50,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2024-01-31 16:12:50,791 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 133 flow. Second operand 4 states and 164 transitions. [2024-01-31 16:12:50,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 300 flow [2024-01-31 16:12:50,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:50,793 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 156 flow [2024-01-31 16:12:50,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-01-31 16:12:50,794 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2024-01-31 16:12:50,794 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 156 flow [2024-01-31 16:12:50,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:50,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:50,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:12:50,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:50,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1818285662, now seen corresponding path program 1 times [2024-01-31 16:12:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604681663] [2024-01-31 16:12:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:50,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604681663] [2024-01-31 16:12:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604681663] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:50,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:50,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:50,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330728765] [2024-01-31 16:12:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:50,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:50,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:50,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 65 [2024-01-31 16:12:50,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:50,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:50,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 65 [2024-01-31 16:12:50,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:51,048 INFO L124 PetriNetUnfolderBase]: 714/2010 cut-off events. [2024-01-31 16:12:51,048 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-01-31 16:12:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3556 conditions, 2010 events. 714/2010 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 16411 event pairs, 92 based on Foata normal form. 68/1835 useless extension candidates. Maximal degree in co-relation 3537. Up to 822 conditions per place. [2024-01-31 16:12:51,058 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 53 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-01-31 16:12:51,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 356 flow [2024-01-31 16:12:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-01-31 16:12:51,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2024-01-31 16:12:51,059 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 156 flow. Second operand 4 states and 188 transitions. [2024-01-31 16:12:51,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 356 flow [2024-01-31 16:12:51,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:51,062 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 148 flow [2024-01-31 16:12:51,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-01-31 16:12:51,063 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-01-31 16:12:51,063 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 148 flow [2024-01-31 16:12:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:51,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:51,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:12:51,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:51,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1231369463, now seen corresponding path program 1 times [2024-01-31 16:12:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961246276] [2024-01-31 16:12:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:51,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:51,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961246276] [2024-01-31 16:12:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961246276] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:51,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:51,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122661493] [2024-01-31 16:12:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:51,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:12:51,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:12:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:12:51,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2024-01-31 16:12:51,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:51,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:51,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2024-01-31 16:12:51,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:51,418 INFO L124 PetriNetUnfolderBase]: 1747/3159 cut-off events. [2024-01-31 16:12:51,418 INFO L125 PetriNetUnfolderBase]: For 587/597 co-relation queries the response was YES. [2024-01-31 16:12:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 3159 events. 1747/3159 cut-off events. For 587/597 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21436 event pairs, 605 based on Foata normal form. 61/3155 useless extension candidates. Maximal degree in co-relation 5967. Up to 1630 conditions per place. [2024-01-31 16:12:51,435 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 62 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-01-31 16:12:51,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 367 flow [2024-01-31 16:12:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:12:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:12:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-01-31 16:12:51,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-01-31 16:12:51,437 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 148 flow. Second operand 5 states and 200 transitions. [2024-01-31 16:12:51,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 367 flow [2024-01-31 16:12:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:51,439 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 169 flow [2024-01-31 16:12:51,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-01-31 16:12:51,440 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2024-01-31 16:12:51,440 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 169 flow [2024-01-31 16:12:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:51,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:51,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:12:51,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:51,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash 583064692, now seen corresponding path program 1 times [2024-01-31 16:12:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540857668] [2024-01-31 16:12:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540857668] [2024-01-31 16:12:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540857668] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:51,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496216600] [2024-01-31 16:12:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:51,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:51,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:12:51,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:51,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:51,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:12:51,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:51,720 INFO L124 PetriNetUnfolderBase]: 1819/3216 cut-off events. [2024-01-31 16:12:51,720 INFO L125 PetriNetUnfolderBase]: For 1101/1144 co-relation queries the response was YES. [2024-01-31 16:12:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 3216 events. 1819/3216 cut-off events. For 1101/1144 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21671 event pairs, 571 based on Foata normal form. 23/3183 useless extension candidates. Maximal degree in co-relation 6908. Up to 2557 conditions per place. [2024-01-31 16:12:51,735 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 49 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-01-31 16:12:51,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 331 flow [2024-01-31 16:12:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-01-31 16:12:51,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231 [2024-01-31 16:12:51,736 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 169 flow. Second operand 4 states and 162 transitions. [2024-01-31 16:12:51,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 331 flow [2024-01-31 16:12:51,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:51,739 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 195 flow [2024-01-31 16:12:51,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-01-31 16:12:51,740 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2024-01-31 16:12:51,740 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 195 flow [2024-01-31 16:12:51,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:51,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:51,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:12:51,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:51,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 895136584, now seen corresponding path program 1 times [2024-01-31 16:12:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912412763] [2024-01-31 16:12:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:51,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:51,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912412763] [2024-01-31 16:12:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912412763] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:51,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:51,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214765219] [2024-01-31 16:12:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:51,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:12:51,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:12:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:12:51,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2024-01-31 16:12:51,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:51,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:51,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2024-01-31 16:12:51,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:52,048 INFO L124 PetriNetUnfolderBase]: 1819/3148 cut-off events. [2024-01-31 16:12:52,048 INFO L125 PetriNetUnfolderBase]: For 1245/1288 co-relation queries the response was YES. [2024-01-31 16:12:52,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 3148 events. 1819/3148 cut-off events. For 1245/1288 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20683 event pairs, 341 based on Foata normal form. 3/3096 useless extension candidates. Maximal degree in co-relation 7159. Up to 1548 conditions per place. [2024-01-31 16:12:52,062 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 61 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-01-31 16:12:52,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 87 transitions, 402 flow [2024-01-31 16:12:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:12:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:12:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-01-31 16:12:52,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061538461538462 [2024-01-31 16:12:52,063 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 195 flow. Second operand 5 states and 197 transitions. [2024-01-31 16:12:52,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 87 transitions, 402 flow [2024-01-31 16:12:52,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:12:52,067 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 202 flow [2024-01-31 16:12:52,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2024-01-31 16:12:52,067 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 5 predicate places. [2024-01-31 16:12:52,067 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 202 flow [2024-01-31 16:12:52,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:52,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:52,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:52,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:12:52,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:52,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 420941256, now seen corresponding path program 1 times [2024-01-31 16:12:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:52,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689336889] [2024-01-31 16:12:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:52,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:52,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689336889] [2024-01-31 16:12:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689336889] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:52,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050752907] [2024-01-31 16:12:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:52,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-01-31 16:12:52,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:52,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:52,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-01-31 16:12:52,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:52,443 INFO L124 PetriNetUnfolderBase]: 2751/4676 cut-off events. [2024-01-31 16:12:52,444 INFO L125 PetriNetUnfolderBase]: For 2489/2555 co-relation queries the response was YES. [2024-01-31 16:12:52,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10592 conditions, 4676 events. 2751/4676 cut-off events. For 2489/2555 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30246 event pairs, 925 based on Foata normal form. 0/4436 useless extension candidates. Maximal degree in co-relation 10567. Up to 3991 conditions per place. [2024-01-31 16:12:52,468 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 50 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-01-31 16:12:52,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 404 flow [2024-01-31 16:12:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-01-31 16:12:52,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2024-01-31 16:12:52,470 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 202 flow. Second operand 4 states and 153 transitions. [2024-01-31 16:12:52,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 404 flow [2024-01-31 16:12:52,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 393 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:52,473 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 274 flow [2024-01-31 16:12:52,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-01-31 16:12:52,474 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2024-01-31 16:12:52,474 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 274 flow [2024-01-31 16:12:52,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:52,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:52,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:52,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:12:52,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:52,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:52,476 INFO L85 PathProgramCache]: Analyzing trace with hash -319325742, now seen corresponding path program 1 times [2024-01-31 16:12:52,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059891062] [2024-01-31 16:12:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:52,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:52,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059891062] [2024-01-31 16:12:52,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059891062] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:52,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:52,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:52,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253746703] [2024-01-31 16:12:52,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:52,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:12:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:12:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:12:52,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2024-01-31 16:12:52,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:52,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:52,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2024-01-31 16:12:52,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:52,669 INFO L124 PetriNetUnfolderBase]: 484/1508 cut-off events. [2024-01-31 16:12:52,670 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2024-01-31 16:12:52,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 1508 events. 484/1508 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11608 event pairs, 176 based on Foata normal form. 100/1554 useless extension candidates. Maximal degree in co-relation 3079. Up to 472 conditions per place. [2024-01-31 16:12:52,676 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 39 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-01-31 16:12:52,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 393 flow [2024-01-31 16:12:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:52,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-01-31 16:12:52,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7846153846153846 [2024-01-31 16:12:52,692 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 274 flow. Second operand 3 states and 153 transitions. [2024-01-31 16:12:52,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 393 flow [2024-01-31 16:12:52,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:12:52,695 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 277 flow [2024-01-31 16:12:52,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2024-01-31 16:12:52,695 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2024-01-31 16:12:52,695 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 277 flow [2024-01-31 16:12:52,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:52,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:52,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:52,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:12:52,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:52,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1123170547, now seen corresponding path program 1 times [2024-01-31 16:12:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773327920] [2024-01-31 16:12:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:52,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773327920] [2024-01-31 16:12:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773327920] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:52,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073063344] [2024-01-31 16:12:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:52,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 65 [2024-01-31 16:12:52,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:52,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:52,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 65 [2024-01-31 16:12:52,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:53,005 INFO L124 PetriNetUnfolderBase]: 1024/2236 cut-off events. [2024-01-31 16:12:53,006 INFO L125 PetriNetUnfolderBase]: For 1328/1341 co-relation queries the response was YES. [2024-01-31 16:12:53,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5391 conditions, 2236 events. 1024/2236 cut-off events. For 1328/1341 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15698 event pairs, 411 based on Foata normal form. 34/2238 useless extension candidates. Maximal degree in co-relation 5363. Up to 1041 conditions per place. [2024-01-31 16:12:53,014 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 59 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-01-31 16:12:53,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 511 flow [2024-01-31 16:12:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-01-31 16:12:53,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-01-31 16:12:53,015 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 277 flow. Second operand 4 states and 180 transitions. [2024-01-31 16:12:53,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 511 flow [2024-01-31 16:12:53,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 91 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:12:53,018 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 341 flow [2024-01-31 16:12:53,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-01-31 16:12:53,019 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 13 predicate places. [2024-01-31 16:12:53,019 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 341 flow [2024-01-31 16:12:53,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:53,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:53,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:53,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:12:53,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:53,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:53,020 INFO L85 PathProgramCache]: Analyzing trace with hash -22321037, now seen corresponding path program 2 times [2024-01-31 16:12:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171845306] [2024-01-31 16:12:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:53,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:53,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171845306] [2024-01-31 16:12:53,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171845306] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:53,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:53,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840241924] [2024-01-31 16:12:53,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:53,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:53,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:53,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 65 [2024-01-31 16:12:53,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:53,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:53,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 65 [2024-01-31 16:12:53,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:53,302 INFO L124 PetriNetUnfolderBase]: 1054/2378 cut-off events. [2024-01-31 16:12:53,302 INFO L125 PetriNetUnfolderBase]: For 2426/2444 co-relation queries the response was YES. [2024-01-31 16:12:53,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 2378 events. 1054/2378 cut-off events. For 2426/2444 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17121 event pairs, 251 based on Foata normal form. 30/2370 useless extension candidates. Maximal degree in co-relation 5810. Up to 1199 conditions per place. [2024-01-31 16:12:53,317 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 58 selfloop transitions, 10 changer transitions 2/90 dead transitions. [2024-01-31 16:12:53,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 90 transitions, 556 flow [2024-01-31 16:12:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:53,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-01-31 16:12:53,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2024-01-31 16:12:53,319 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 341 flow. Second operand 4 states and 176 transitions. [2024-01-31 16:12:53,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 90 transitions, 556 flow [2024-01-31 16:12:53,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:12:53,325 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 352 flow [2024-01-31 16:12:53,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-01-31 16:12:53,327 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 13 predicate places. [2024-01-31 16:12:53,327 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 352 flow [2024-01-31 16:12:53,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:53,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:53,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:12:53,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:53,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1405220373, now seen corresponding path program 1 times [2024-01-31 16:12:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:53,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341431738] [2024-01-31 16:12:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:53,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:53,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:53,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341431738] [2024-01-31 16:12:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341431738] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:53,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:53,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:53,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227743887] [2024-01-31 16:12:53,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:53,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:53,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2024-01-31 16:12:53,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:53,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:53,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2024-01-31 16:12:53,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:53,666 INFO L124 PetriNetUnfolderBase]: 1242/2811 cut-off events. [2024-01-31 16:12:53,666 INFO L125 PetriNetUnfolderBase]: For 2751/2762 co-relation queries the response was YES. [2024-01-31 16:12:53,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6894 conditions, 2811 events. 1242/2811 cut-off events. For 2751/2762 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 20831 event pairs, 354 based on Foata normal form. 20/2767 useless extension candidates. Maximal degree in co-relation 6152. Up to 852 conditions per place. [2024-01-31 16:12:53,678 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 59 selfloop transitions, 12 changer transitions 7/96 dead transitions. [2024-01-31 16:12:53,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 96 transitions, 595 flow [2024-01-31 16:12:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-01-31 16:12:53,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6807692307692308 [2024-01-31 16:12:53,680 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 352 flow. Second operand 4 states and 177 transitions. [2024-01-31 16:12:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 96 transitions, 595 flow [2024-01-31 16:12:53,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 96 transitions, 567 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:12:53,686 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 368 flow [2024-01-31 16:12:53,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2024-01-31 16:12:53,687 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 13 predicate places. [2024-01-31 16:12:53,687 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 368 flow [2024-01-31 16:12:53,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:53,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:53,687 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] [2024-01-31 16:12:53,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:12:53,688 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:53,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -311079425, now seen corresponding path program 1 times [2024-01-31 16:12:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398908664] [2024-01-31 16:12:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:53,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398908664] [2024-01-31 16:12:53,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398908664] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:53,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:53,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:53,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415242425] [2024-01-31 16:12:53,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:53,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:53,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:53,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:12:53,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:53,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:53,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:12:53,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:53,987 INFO L124 PetriNetUnfolderBase]: 1383/2944 cut-off events. [2024-01-31 16:12:53,988 INFO L125 PetriNetUnfolderBase]: For 3339/3349 co-relation queries the response was YES. [2024-01-31 16:12:53,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7709 conditions, 2944 events. 1383/2944 cut-off events. For 3339/3349 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21097 event pairs, 273 based on Foata normal form. 56/2991 useless extension candidates. Maximal degree in co-relation 7681. Up to 1313 conditions per place. [2024-01-31 16:12:53,999 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 67 selfloop transitions, 10 changer transitions 4/96 dead transitions. [2024-01-31 16:12:53,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 668 flow [2024-01-31 16:12:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-01-31 16:12:54,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576923076923077 [2024-01-31 16:12:54,001 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 368 flow. Second operand 4 states and 171 transitions. [2024-01-31 16:12:54,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 668 flow [2024-01-31 16:12:54,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 662 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:12:54,005 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 398 flow [2024-01-31 16:12:54,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-01-31 16:12:54,006 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2024-01-31 16:12:54,006 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 398 flow [2024-01-31 16:12:54,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:54,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:54,006 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] [2024-01-31 16:12:54,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:12:54,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:54,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1840434139, now seen corresponding path program 2 times [2024-01-31 16:12:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436726186] [2024-01-31 16:12:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436726186] [2024-01-31 16:12:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436726186] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:54,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:54,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096818559] [2024-01-31 16:12:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:54,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:12:54,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:54,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:54,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:12:54,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:54,312 INFO L124 PetriNetUnfolderBase]: 1537/3354 cut-off events. [2024-01-31 16:12:54,312 INFO L125 PetriNetUnfolderBase]: For 5523/5535 co-relation queries the response was YES. [2024-01-31 16:12:54,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 3354 events. 1537/3354 cut-off events. For 5523/5535 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 25450 event pairs, 647 based on Foata normal form. 56/3381 useless extension candidates. Maximal degree in co-relation 9224. Up to 1258 conditions per place. [2024-01-31 16:12:54,330 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 75 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-01-31 16:12:54,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 820 flow [2024-01-31 16:12:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-01-31 16:12:54,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576923076923077 [2024-01-31 16:12:54,331 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 398 flow. Second operand 4 states and 171 transitions. [2024-01-31 16:12:54,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 820 flow [2024-01-31 16:12:54,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 802 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:12:54,340 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 545 flow [2024-01-31 16:12:54,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-01-31 16:12:54,340 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 13 predicate places. [2024-01-31 16:12:54,340 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 545 flow [2024-01-31 16:12:54,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:54,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:54,343 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, 1, 1] [2024-01-31 16:12:54,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:12:54,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:54,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:54,344 INFO L85 PathProgramCache]: Analyzing trace with hash -991029077, now seen corresponding path program 1 times [2024-01-31 16:12:54,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:54,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097867677] [2024-01-31 16:12:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:54,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097867677] [2024-01-31 16:12:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097867677] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:12:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562497401] [2024-01-31 16:12:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:12:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:12:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:12:54,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-01-31 16:12:54,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 545 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:54,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:54,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-01-31 16:12:54,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:54,714 INFO L124 PetriNetUnfolderBase]: 1745/3524 cut-off events. [2024-01-31 16:12:54,714 INFO L125 PetriNetUnfolderBase]: For 6154/6176 co-relation queries the response was YES. [2024-01-31 16:12:54,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10303 conditions, 3524 events. 1745/3524 cut-off events. For 6154/6176 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25314 event pairs, 283 based on Foata normal form. 120/3635 useless extension candidates. Maximal degree in co-relation 10274. Up to 1446 conditions per place. [2024-01-31 16:12:54,732 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 84 selfloop transitions, 11 changer transitions 4/111 dead transitions. [2024-01-31 16:12:54,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 909 flow [2024-01-31 16:12:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:12:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:12:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-01-31 16:12:54,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-01-31 16:12:54,734 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 545 flow. Second operand 5 states and 190 transitions. [2024-01-31 16:12:54,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 909 flow [2024-01-31 16:12:54,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 902 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:54,741 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 554 flow [2024-01-31 16:12:54,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-01-31 16:12:54,741 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2024-01-31 16:12:54,742 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 554 flow [2024-01-31 16:12:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:54,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:54,743 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, 1, 1] [2024-01-31 16:12:54,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:12:54,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:54,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1702112306, now seen corresponding path program 1 times [2024-01-31 16:12:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265174280] [2024-01-31 16:12:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265174280] [2024-01-31 16:12:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265174280] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:54,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:12:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490674039] [2024-01-31 16:12:54,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:54,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:12:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:12:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:12:54,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-01-31 16:12:54,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 554 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:54,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:54,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-01-31 16:12:54,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:55,127 INFO L124 PetriNetUnfolderBase]: 1642/3345 cut-off events. [2024-01-31 16:12:55,127 INFO L125 PetriNetUnfolderBase]: For 6635/6651 co-relation queries the response was YES. [2024-01-31 16:12:55,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10224 conditions, 3345 events. 1642/3345 cut-off events. For 6635/6651 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23995 event pairs, 338 based on Foata normal form. 72/3408 useless extension candidates. Maximal degree in co-relation 10196. Up to 1193 conditions per place. [2024-01-31 16:12:55,145 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 22 changer transitions 2/112 dead transitions. [2024-01-31 16:12:55,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 938 flow [2024-01-31 16:12:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:12:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:12:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 192 transitions. [2024-01-31 16:12:55,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5907692307692308 [2024-01-31 16:12:55,147 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 554 flow. Second operand 5 states and 192 transitions. [2024-01-31 16:12:55,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 938 flow [2024-01-31 16:12:55,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 112 transitions, 920 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:55,154 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 656 flow [2024-01-31 16:12:55,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=656, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-01-31 16:12:55,154 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2024-01-31 16:12:55,154 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 656 flow [2024-01-31 16:12:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:55,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:12:55,155 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:55,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1225873599, now seen corresponding path program 1 times [2024-01-31 16:12:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552269118] [2024-01-31 16:12:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:55,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:55,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552269118] [2024-01-31 16:12:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552269118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179432039] [2024-01-31 16:12:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:55,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 65 [2024-01-31 16:12:55,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 656 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:55,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:55,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 65 [2024-01-31 16:12:55,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:55,441 INFO L124 PetriNetUnfolderBase]: 951/2208 cut-off events. [2024-01-31 16:12:55,441 INFO L125 PetriNetUnfolderBase]: For 7158/7215 co-relation queries the response was YES. [2024-01-31 16:12:55,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 2208 events. 951/2208 cut-off events. For 7158/7215 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16118 event pairs, 343 based on Foata normal form. 69/2260 useless extension candidates. Maximal degree in co-relation 6810. Up to 1254 conditions per place. [2024-01-31 16:12:55,451 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 50 selfloop transitions, 18 changer transitions 2/87 dead transitions. [2024-01-31 16:12:55,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 785 flow [2024-01-31 16:12:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-01-31 16:12:55,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6692307692307692 [2024-01-31 16:12:55,452 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 656 flow. Second operand 4 states and 174 transitions. [2024-01-31 16:12:55,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 785 flow [2024-01-31 16:12:55,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 734 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-01-31 16:12:55,458 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 572 flow [2024-01-31 16:12:55,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-01-31 16:12:55,458 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2024-01-31 16:12:55,458 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 572 flow [2024-01-31 16:12:55,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:55,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:55,459 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, 1, 1, 1] [2024-01-31 16:12:55,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:12:55,459 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:55,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash -379328288, now seen corresponding path program 1 times [2024-01-31 16:12:55,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:55,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126143524] [2024-01-31 16:12:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:55,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:55,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:55,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126143524] [2024-01-31 16:12:55,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126143524] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:55,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:55,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:55,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610758517] [2024-01-31 16:12:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:55,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:55,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:55,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 65 [2024-01-31 16:12:55,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:55,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:55,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 65 [2024-01-31 16:12:55,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:55,703 INFO L124 PetriNetUnfolderBase]: 931/2208 cut-off events. [2024-01-31 16:12:55,703 INFO L125 PetriNetUnfolderBase]: For 5310/5364 co-relation queries the response was YES. [2024-01-31 16:12:55,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 2208 events. 931/2208 cut-off events. For 5310/5364 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16252 event pairs, 301 based on Foata normal form. 39/2224 useless extension candidates. Maximal degree in co-relation 6668. Up to 1000 conditions per place. [2024-01-31 16:12:55,715 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 50 selfloop transitions, 22 changer transitions 2/91 dead transitions. [2024-01-31 16:12:55,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 792 flow [2024-01-31 16:12:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-01-31 16:12:55,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-01-31 16:12:55,716 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 572 flow. Second operand 4 states and 169 transitions. [2024-01-31 16:12:55,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 792 flow [2024-01-31 16:12:55,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 751 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:12:55,721 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 600 flow [2024-01-31 16:12:55,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=600, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-01-31 16:12:55,722 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 15 predicate places. [2024-01-31 16:12:55,722 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 600 flow [2024-01-31 16:12:55,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:55,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:55,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:55,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:12:55,723 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:12:55,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1820982657, now seen corresponding path program 1 times [2024-01-31 16:12:55,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:55,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631287979] [2024-01-31 16:12:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:55,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:12:55,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:12:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:12:55,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:12:55,767 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:12:55,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err3ASSERT_VIOLATIONERROR_FUNCTION (32 of 33 remaining) [2024-01-31 16:12:55,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 33 remaining) [2024-01-31 16:12:55,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONERROR_FUNCTION (19 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 33 remaining) [2024-01-31 16:12:55,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-01-31 16:12:55,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 33 remaining) [2024-01-31 16:12:55,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 33 remaining) [2024-01-31 16:12:55,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 33 remaining) [2024-01-31 16:12:55,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:12:55,774 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:55,779 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:12:55,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:12:55,805 INFO L503 ceAbstractionStarter]: Automizer considered 15 witness invariants [2024-01-31 16:12:55,805 INFO L504 ceAbstractionStarter]: WitnessConsidered=15 [2024-01-31 16:12:55,806 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:12:55 BasicIcfg [2024-01-31 16:12:55,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:12:55,806 INFO L158 Benchmark]: Toolchain (without parser) took 7968.58ms. Allocated memory was 174.1MB in the beginning and 404.8MB in the end (delta: 230.7MB). Free memory was 103.4MB in the beginning and 178.7MB in the end (delta: -75.3MB). Peak memory consumption was 156.0MB. Max. memory is 16.1GB. [2024-01-31 16:12:55,806 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:12:55,806 INFO L158 Benchmark]: Witness Parser took 0.54ms. Allocated memory is still 174.1MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:12:55,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.70ms. Allocated memory is still 174.1MB. Free memory was 103.0MB in the beginning and 127.6MB in the end (delta: -24.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2024-01-31 16:12:55,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.00ms. Allocated memory is still 174.1MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:12:55,807 INFO L158 Benchmark]: Boogie Preprocessor took 54.88ms. Allocated memory is still 174.1MB. Free memory was 125.5MB in the beginning and 123.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:12:55,807 INFO L158 Benchmark]: RCFGBuilder took 565.01ms. Allocated memory is still 174.1MB. Free memory was 123.4MB in the beginning and 95.3MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-31 16:12:55,807 INFO L158 Benchmark]: TraceAbstraction took 6784.23ms. Allocated memory was 174.1MB in the beginning and 404.8MB in the end (delta: 230.7MB). Free memory was 94.7MB in the beginning and 178.7MB in the end (delta: -84.0MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. [2024-01-31 16:12:55,808 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.54ms. Allocated memory is still 174.1MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 511.70ms. Allocated memory is still 174.1MB. Free memory was 103.0MB in the beginning and 127.6MB in the end (delta: -24.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.00ms. Allocated memory is still 174.1MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.88ms. Allocated memory is still 174.1MB. Free memory was 125.5MB in the beginning and 123.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 565.01ms. Allocated memory is still 174.1MB. Free memory was 123.4MB in the beginning and 95.3MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6784.23ms. Allocated memory was 174.1MB in the beginning and 404.8MB in the end (delta: 230.7MB). Free memory was 94.7MB in the beginning and 178.7MB in the end (delta: -84.0MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L730] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data],IntegerLiteral[0]]]] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L732] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data],IntegerLiteral[0]]]] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L706] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L713] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L720] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L707] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[2],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[3],IdentifierExpression[data]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[COMPNEQ,IdentifierExpression[data],IntegerLiteral[0]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 706]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 33 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: 6.6s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1378 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 948 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 151 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2465 IncrementalHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 151 mSolverCounterUnsat, 91 mSDtfsCounter, 2465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=656occurred in iteration=17, InterpolantAutomatonStates: 78, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 1209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:12:55,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE