./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/stateful01-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/stateful01-1.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/stateful01-1.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.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:22:59,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:22:59,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:22:59,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:22:59,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:22:59,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:22:59,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:22:59,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:22:59,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:22:59,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:22:59,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:22:59,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:22:59,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:22:59,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:22:59,202 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:22:59,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:22:59,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:22:59,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:22:59,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:22:59,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:22:59,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:22:59,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:22:59,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:22:59,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:22:59,204 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:22:59,204 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:22:59,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:22:59,204 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:22:59,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:22:59,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:22:59,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:22:59,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:22:59,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:22:59,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:22:59,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:22:59,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:22:59,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:22:59,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:22:59,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:22:59,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:22:59,207 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:22:59,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:22:59,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:22:59,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:22:59,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:22:59,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:22:59,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:22:59,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:22:59,460 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:22:59,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2024-02-07 19:23:00,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:23:00,695 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:23:00,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2024-02-07 19:23:00,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e28453d/95456ca97c93422db41caeb2529ecc2f/FLAG353e0bcae [2024-02-07 19:23:00,714 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e28453d/95456ca97c93422db41caeb2529ecc2f [2024-02-07 19:23:00,715 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:23:00,716 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:23:00,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/stateful01-1.yml/witness.yml [2024-02-07 19:23:00,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:23:00,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:23:00,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:23:00,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:23:00,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:23:00,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:23:00" (1/2) ... [2024-02-07 19:23:00,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38be42d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:23:00, skipping insertion in model container [2024-02-07 19:23:00,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:23:00" (1/2) ... [2024-02-07 19:23:00,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e2c2368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:23:00, skipping insertion in model container [2024-02-07 19:23:00,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:23:00" (2/2) ... [2024-02-07 19:23:00,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38be42d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:00, skipping insertion in model container [2024-02-07 19:23:00,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:23:00" (2/2) ... [2024-02-07 19:23:00,790 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:23:00,819 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:23:00,820 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] data2 <= 2147483641 [2024-02-07 19:23:00,820 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] data1 == 10 [2024-02-07 19:23:00,820 INFO L76 edCorrectnessWitness]: Location invariant before [L725-L725] 10 <= data1 [2024-02-07 19:23:00,820 INFO L76 edCorrectnessWitness]: Location invariant before [L721-L721] data2 == 10 [2024-02-07 19:23:00,821 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] 10 <= data1 [2024-02-07 19:23:00,821 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] -2147483647 <= data2 [2024-02-07 19:23:00,821 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] 10 <= data1 [2024-02-07 19:23:00,821 INFO L76 edCorrectnessWitness]: Location invariant before [L698-L698] 11 <= data1 [2024-02-07 19:23:00,822 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] 15 <= data1 [2024-02-07 19:23:00,859 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:23:01,098 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/stateful01-1.i[30826,30839] [2024-02-07 19:23:01,101 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:23:01,111 INFO L206 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 [2024-02-07 19:23:01,163 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/stateful01-1.i[30826,30839] [2024-02-07 19:23:01,164 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:23:01,188 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:23:01,189 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01 WrapperNode [2024-02-07 19:23:01,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:23:01,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:23:01,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:23:01,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:23:01,195 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 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,205 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 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,219 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2024-02-07 19:23:01,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:23:01,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:23:01,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:23:01,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:23:01,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,248 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 5, 2, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 1, 1]. [2024-02-07 19:23:01,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:23:01,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:23:01,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:23:01,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:23:01,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (1/1) ... [2024-02-07 19:23:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:23:01,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:23:01,291 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) [2024-02-07 19:23:01,306 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 [2024-02-07 19:23:01,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:23:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:23:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:23:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:23:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:23:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 19:23:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 19:23:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 19:23:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 19:23:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:23:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:23:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:23:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:23:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:23:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:23:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:23:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:23:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:23:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:23:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:23:01,369 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:23:01,532 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:23:01,534 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:23:01,680 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:23:01,680 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:23:01,770 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:23:01,770 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:23:01,771 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:23:01 BoogieIcfgContainer [2024-02-07 19:23:01,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:23:01,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:23:01,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:23:01,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:23:01,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:23:00" (1/4) ... [2024-02-07 19:23:01,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdf4cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:23:01, skipping insertion in model container [2024-02-07 19:23:01,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:23:00" (2/4) ... [2024-02-07 19:23:01,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdf4cdd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:23:01, skipping insertion in model container [2024-02-07 19:23:01,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:23:01" (3/4) ... [2024-02-07 19:23:01,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdf4cdd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:23:01, skipping insertion in model container [2024-02-07 19:23:01,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:23:01" (4/4) ... [2024-02-07 19:23:01,778 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2024-02-07 19:23:01,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:23:01,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-02-07 19:23:01,792 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:23:01,822 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:23:01,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 118 flow [2024-02-07 19:23:01,880 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-02-07 19:23:01,880 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:23:01,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 50 events. 1/50 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-02-07 19:23:01,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 118 flow [2024-02-07 19:23:01,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 47 transitions, 106 flow [2024-02-07 19:23:01,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:23:01,905 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;@19570820, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:23:01,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-02-07 19:23:01,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:23:01,910 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 19:23:01,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:23:01,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:01,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 19:23:01,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:01,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash 8450, now seen corresponding path program 1 times [2024-02-07 19:23:01,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:01,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403118363] [2024-02-07 19:23:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:01,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403118363] [2024-02-07 19:23:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403118363] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:02,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:23:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387890373] [2024-02-07 19:23:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:23:02,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:23:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:23:02,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-02-07 19:23:02,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:02,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-02-07 19:23:02,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:02,335 INFO L124 PetriNetUnfolderBase]: 280/628 cut-off events. [2024-02-07 19:23:02,335 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-02-07 19:23:02,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 628 events. 280/628 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3147 event pairs, 131 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1066. Up to 493 conditions per place. [2024-02-07 19:23:02,345 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 34 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-02-07 19:23:02,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 195 flow [2024-02-07 19:23:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:23:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:23:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-02-07 19:23:02,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-02-07 19:23:02,357 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 106 flow. Second operand 3 states and 97 transitions. [2024-02-07 19:23:02,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 195 flow [2024-02-07 19:23:02,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 185 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 19:23:02,364 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 117 flow [2024-02-07 19:23:02,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-02-07 19:23:02,368 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2024-02-07 19:23:02,369 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 117 flow [2024-02-07 19:23:02,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:02,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:23:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:23:02,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:02,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 262202, now seen corresponding path program 1 times [2024-02-07 19:23:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970740437] [2024-02-07 19:23:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:02,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970740437] [2024-02-07 19:23:02,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970740437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:02,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:02,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:23:02,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80340364] [2024-02-07 19:23:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:23:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:23:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:23:02,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-02-07 19:23:02,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:02,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-02-07 19:23:02,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:02,605 INFO L124 PetriNetUnfolderBase]: 240/513 cut-off events. [2024-02-07 19:23:02,606 INFO L125 PetriNetUnfolderBase]: For 43/63 co-relation queries the response was YES. [2024-02-07 19:23:02,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 513 events. 240/513 cut-off events. For 43/63 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2423 event pairs, 90 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 769. Up to 318 conditions per place. [2024-02-07 19:23:02,613 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 39 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-02-07 19:23:02,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 230 flow [2024-02-07 19:23:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:23:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:23:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-02-07 19:23:02,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6858974358974359 [2024-02-07 19:23:02,621 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 117 flow. Second operand 3 states and 107 transitions. [2024-02-07 19:23:02,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 230 flow [2024-02-07 19:23:02,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:23:02,624 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 129 flow [2024-02-07 19:23:02,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-02-07 19:23:02,624 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-02-07 19:23:02,625 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 129 flow [2024-02-07 19:23:02,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:02,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:23:02,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:23:02,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:02,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash 405153790, now seen corresponding path program 1 times [2024-02-07 19:23:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145784846] [2024-02-07 19:23:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:02,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145784846] [2024-02-07 19:23:02,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145784846] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:02,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:02,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:23:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698449400] [2024-02-07 19:23:02,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:02,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:23:02,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:23:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:23:02,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-02-07 19:23:02,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:02,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-02-07 19:23:02,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:02,845 INFO L124 PetriNetUnfolderBase]: 240/550 cut-off events. [2024-02-07 19:23:02,845 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-02-07 19:23:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 550 events. 240/550 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2587 event pairs, 99 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 429. Up to 422 conditions per place. [2024-02-07 19:23:02,848 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 34 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-02-07 19:23:02,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 202 flow [2024-02-07 19:23:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:23:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:23:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-02-07 19:23:02,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2024-02-07 19:23:02,853 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 129 flow. Second operand 4 states and 107 transitions. [2024-02-07 19:23:02,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 202 flow [2024-02-07 19:23:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:23:02,856 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 120 flow [2024-02-07 19:23:02,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-02-07 19:23:02,857 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-02-07 19:23:02,857 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 120 flow [2024-02-07 19:23:02,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:02,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:23:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:23:02,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:02,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -100864930, now seen corresponding path program 1 times [2024-02-07 19:23:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:02,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823718590] [2024-02-07 19:23:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823718590] [2024-02-07 19:23:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823718590] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:23:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247365528] [2024-02-07 19:23:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:23:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:23:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:23:02,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-02-07 19:23:02,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:02,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:02,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-02-07 19:23:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:03,030 INFO L124 PetriNetUnfolderBase]: 240/532 cut-off events. [2024-02-07 19:23:03,031 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-02-07 19:23:03,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 532 events. 240/532 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2439 event pairs, 51 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 821. Up to 332 conditions per place. [2024-02-07 19:23:03,033 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 39 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-02-07 19:23:03,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 225 flow [2024-02-07 19:23:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:23:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:23:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-02-07 19:23:03,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-02-07 19:23:03,035 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 120 flow. Second operand 4 states and 108 transitions. [2024-02-07 19:23:03,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 225 flow [2024-02-07 19:23:03,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:23:03,036 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 120 flow [2024-02-07 19:23:03,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-02-07 19:23:03,037 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-02-07 19:23:03,037 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 120 flow [2024-02-07 19:23:03,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:03,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:23:03,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:23:03,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:03,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1589820075, now seen corresponding path program 1 times [2024-02-07 19:23:03,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:03,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199313351] [2024-02-07 19:23:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:03,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199313351] [2024-02-07 19:23:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199313351] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:03,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:03,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:23:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951495454] [2024-02-07 19:23:03,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:03,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:23:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:23:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:23:03,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-02-07 19:23:03,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 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) [2024-02-07 19:23:03,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:03,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-02-07 19:23:03,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:03,178 INFO L124 PetriNetUnfolderBase]: 221/469 cut-off events. [2024-02-07 19:23:03,179 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-02-07 19:23:03,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 469 events. 221/469 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2172 event pairs, 68 based on Foata normal form. 14/465 useless extension candidates. Maximal degree in co-relation 739. Up to 144 conditions per place. [2024-02-07 19:23:03,181 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 47 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-02-07 19:23:03,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 278 flow [2024-02-07 19:23:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:23:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:23:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-02-07 19:23:03,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6682692307692307 [2024-02-07 19:23:03,183 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 120 flow. Second operand 4 states and 139 transitions. [2024-02-07 19:23:03,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 278 flow [2024-02-07 19:23:03,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:23:03,185 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 131 flow [2024-02-07 19:23:03,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-02-07 19:23:03,186 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-02-07 19:23:03,186 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 131 flow [2024-02-07 19:23:03,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 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) [2024-02-07 19:23:03,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:03,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:23:03,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:23:03,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:03,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:03,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1295130266, now seen corresponding path program 1 times [2024-02-07 19:23:03,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:03,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699560923] [2024-02-07 19:23:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:03,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699560923] [2024-02-07 19:23:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699560923] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:03,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:23:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510108141] [2024-02-07 19:23:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:03,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:23:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:23:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:23:03,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-02-07 19:23:03,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:03,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-02-07 19:23:03,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:03,320 INFO L124 PetriNetUnfolderBase]: 231/500 cut-off events. [2024-02-07 19:23:03,321 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-02-07 19:23:03,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 500 events. 231/500 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2326 event pairs, 91 based on Foata normal form. 20/502 useless extension candidates. Maximal degree in co-relation 865. Up to 178 conditions per place. [2024-02-07 19:23:03,323 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 46 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-02-07 19:23:03,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 295 flow [2024-02-07 19:23:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:23:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:23:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-02-07 19:23:03,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7019230769230769 [2024-02-07 19:23:03,324 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 131 flow. Second operand 4 states and 146 transitions. [2024-02-07 19:23:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 295 flow [2024-02-07 19:23:03,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 286 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 19:23:03,326 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 166 flow [2024-02-07 19:23:03,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 19:23:03,327 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-02-07 19:23:03,327 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 166 flow [2024-02-07 19:23:03,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:03,328 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] [2024-02-07 19:23:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:23:03,328 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:03,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2049374301, now seen corresponding path program 1 times [2024-02-07 19:23:03,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:03,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816008263] [2024-02-07 19:23:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:03,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816008263] [2024-02-07 19:23:03,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816008263] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:03,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:03,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:23:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765617599] [2024-02-07 19:23:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:23:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:23:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:23:03,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-02-07 19:23:03,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:03,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-02-07 19:23:03,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:03,467 INFO L124 PetriNetUnfolderBase]: 116/345 cut-off events. [2024-02-07 19:23:03,467 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-02-07 19:23:03,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 345 events. 116/345 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1386 event pairs, 45 based on Foata normal form. 32/373 useless extension candidates. Maximal degree in co-relation 535. Up to 144 conditions per place. [2024-02-07 19:23:03,469 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 27 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2024-02-07 19:23:03,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 244 flow [2024-02-07 19:23:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:23:03,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:23:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-02-07 19:23:03,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2024-02-07 19:23:03,470 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 166 flow. Second operand 3 states and 113 transitions. [2024-02-07 19:23:03,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 244 flow [2024-02-07 19:23:03,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 232 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-07 19:23:03,472 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 162 flow [2024-02-07 19:23:03,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-02-07 19:23:03,472 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-02-07 19:23:03,473 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 162 flow [2024-02-07 19:23:03,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:03,473 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] [2024-02-07 19:23:03,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:23:03,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:03,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1700867767, now seen corresponding path program 1 times [2024-02-07 19:23:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887239947] [2024-02-07 19:23:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:03,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:03,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887239947] [2024-02-07 19:23:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887239947] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:23:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017818973] [2024-02-07 19:23:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:23:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:23:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:23:03,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-02-07 19:23:03,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:03,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-02-07 19:23:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:03,607 INFO L124 PetriNetUnfolderBase]: 120/328 cut-off events. [2024-02-07 19:23:03,607 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-02-07 19:23:03,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 328 events. 120/328 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1282 event pairs, 49 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 564. Up to 100 conditions per place. [2024-02-07 19:23:03,609 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 44 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2024-02-07 19:23:03,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 326 flow [2024-02-07 19:23:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:23:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:23:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-02-07 19:23:03,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-02-07 19:23:03,610 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 162 flow. Second operand 5 states and 166 transitions. [2024-02-07 19:23:03,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 326 flow [2024-02-07 19:23:03,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 300 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:23:03,612 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 154 flow [2024-02-07 19:23:03,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-02-07 19:23:03,612 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-02-07 19:23:03,613 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 154 flow [2024-02-07 19:23:03,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:03,613 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] [2024-02-07 19:23:03,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:23:03,613 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:03,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2104000256, now seen corresponding path program 1 times [2024-02-07 19:23:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624250009] [2024-02-07 19:23:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:23:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:23:03,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:23:03,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624250009] [2024-02-07 19:23:03,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624250009] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:23:03,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:23:03,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:23:03,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539967831] [2024-02-07 19:23:03,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:23:03,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:23:03,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:23:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:23:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:23:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-02-07 19:23:03,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:23:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-02-07 19:23:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:23:03,735 INFO L124 PetriNetUnfolderBase]: 116/318 cut-off events. [2024-02-07 19:23:03,735 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-02-07 19:23:03,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 318 events. 116/318 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1256 event pairs, 65 based on Foata normal form. 4/312 useless extension candidates. Maximal degree in co-relation 519. Up to 145 conditions per place. [2024-02-07 19:23:03,737 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-02-07 19:23:03,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 277 flow [2024-02-07 19:23:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:23:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:23:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-02-07 19:23:03,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6076923076923076 [2024-02-07 19:23:03,738 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 154 flow. Second operand 5 states and 158 transitions. [2024-02-07 19:23:03,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 277 flow [2024-02-07 19:23:03,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 258 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-07 19:23:03,740 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 139 flow [2024-02-07 19:23:03,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-02-07 19:23:03,740 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2024-02-07 19:23:03,740 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 139 flow [2024-02-07 19:23:03,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:23:03,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:23:03,741 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:23:03,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:23:03,741 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 19:23:03,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:23:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1260275821, now seen corresponding path program 1 times [2024-02-07 19:23:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:23:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80732109] [2024-02-07 19:23:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:23:03,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:23:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:23:03,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:23:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:23:03,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:23:03,798 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:23:03,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (17 of 18 remaining) [2024-02-07 19:23:03,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 18 remaining) [2024-02-07 19:23:03,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 18 remaining) [2024-02-07 19:23:03,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 18 remaining) [2024-02-07 19:23:03,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 18 remaining) [2024-02-07 19:23:03,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 18 remaining) [2024-02-07 19:23:03,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:23:03,803 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:23:03,808 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:23:03,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:23:03,836 INFO L503 ceAbstractionStarter]: Automizer considered 9 witness invariants [2024-02-07 19:23:03,837 INFO L504 ceAbstractionStarter]: WitnessConsidered=9 [2024-02-07 19:23:03,837 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:23:03 BasicIcfg [2024-02-07 19:23:03,837 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:23:03,838 INFO L158 Benchmark]: Toolchain (without parser) took 3055.05ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 120.0MB in the beginning and 76.5MB in the end (delta: 43.5MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,838 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 109.1MB. Free memory was 80.4MB in the beginning and 80.4MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,838 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 122.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:23:03,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.90ms. Allocated memory is still 155.2MB. Free memory was 119.0MB in the beginning and 94.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.79ms. Allocated memory is still 155.2MB. Free memory was 94.8MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,839 INFO L158 Benchmark]: Boogie Preprocessor took 39.66ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 90.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,839 INFO L158 Benchmark]: RCFGBuilder took 510.78ms. Allocated memory is still 155.2MB. Free memory was 90.7MB in the beginning and 96.4MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,839 INFO L158 Benchmark]: TraceAbstraction took 2064.97ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 96.4MB in the beginning and 76.5MB in the end (delta: 19.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2024-02-07 19:23:03,840 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 109.1MB. Free memory was 80.4MB in the beginning and 80.4MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 122.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.90ms. Allocated memory is still 155.2MB. Free memory was 119.0MB in the beginning and 94.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.79ms. Allocated memory is still 155.2MB. Free memory was 94.8MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.66ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 90.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.78ms. Allocated memory is still 155.2MB. Free memory was 90.7MB in the beginning and 96.4MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2064.97ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 96.4MB in the beginning and 76.5MB in the end (delta: 19.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 VAL [data1=10, data2=0, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L720] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data1],IntegerLiteral[10]]]] [L720] 0 data2 = 10 VAL [data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L721] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data2],IntegerLiteral[10]]]] [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L697] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[10],IdentifierExpression[data1]]]] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L698] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[11],IdentifierExpression[data1]]]] VAL [arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L723] 0 \read(t1) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L701] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[2147483647]],IdentifierExpression[data2]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L707] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[10],IdentifierExpression[data1]]]] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L708] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[15],IdentifierExpression[data1]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] 0 \read(t2) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L711] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IdentifierExpression[data2],IntegerLiteral[2147483641]]]] VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L725] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[10],IdentifierExpression[data1]]]] VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L725] COND TRUE 0 data1==16 && data2==5 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] - UnprovableResult [Line: 697]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 701]: 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: 711]: 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: 725]: 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 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: 722]: 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 5 procedures, 86 locations, 18 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: 2.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 367 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 641 IncrementalHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 9 mSDtfsCounter, 641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=6, InterpolantAutomatonStates: 35, 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, 0.4s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2024-02-07 19:23:03,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE