./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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-ext/35_double_lock_p3_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.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-dev-59af5db-m [2024-02-02 09:12:35,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:12:35,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:12:35,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:12:35,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:12:35,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:12:35,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:12:35,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:12:35,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:12:35,303 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:12:35,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:12:35,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:12:35,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:12:35,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:12:35,306 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:12:35,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:12:35,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:12:35,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:12:35,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:12:35,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:12:35,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:12:35,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:12:35,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:12:35,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:12:35,309 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:12:35,310 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:12:35,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:12:35,310 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:12:35,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:12:35,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:12:35,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:12:35,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:12:35,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:12:35,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:12:35,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:12:35,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:12:35,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:12:35,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:12:35,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:12:35,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:12:35,315 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:12:35,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:12:35,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:12:35,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:12:35,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:12:35,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:12:35,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:12:35,578 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:12:35,579 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:12:35,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml [2024-02-02 09:12:35,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:12:35,652 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:12:35,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-02-02 09:12:37,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:12:37,274 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:12:37,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-02-02 09:12:37,287 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1171e6bd6/1041248c79c045afb70786aad1065902/FLAGb4a0821a5 [2024-02-02 09:12:37,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1171e6bd6/1041248c79c045afb70786aad1065902 [2024-02-02 09:12:37,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:12:37,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:12:37,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:12:37,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:12:37,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:12:37,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:12:35" (1/2) ... [2024-02-02 09:12:37,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76fd15b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:12:37, skipping insertion in model container [2024-02-02 09:12:37,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:12:35" (1/2) ... [2024-02-02 09:12:37,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11d428b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:12:37, skipping insertion in model container [2024-02-02 09:12:37,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:12:37" (2/2) ... [2024-02-02 09:12:37,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76fd15b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37, skipping insertion in model container [2024-02-02 09:12:37,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:12:37" (2/2) ... [2024-02-02 09:12:37,315 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:12:37,362 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:12:37,363 INFO L101 nessWitnessExtractor]: Loop invariant at [L702-L707] (unsigned long )arg == 0UL [2024-02-02 09:12:37,363 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L696] count == -1 [2024-02-02 09:12:37,363 INFO L101 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-02-02 09:12:37,364 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] count == 0 [2024-02-02 09:12:37,364 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L713] (unsigned long )arg == 0UL [2024-02-02 09:12:37,364 INFO L101 nessWitnessExtractor]: Location invariant after [L712-L713] (unsigned long )arg == 0UL [2024-02-02 09:12:37,364 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-02-02 09:12:37,364 INFO L101 nessWitnessExtractor]: Location invariant before [L705-L705] (count == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:12:37,365 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] count == 1 [2024-02-02 09:12:37,365 INFO L101 nessWitnessExtractor]: Location invariant before [L706-L706] (count == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:12:37,365 INFO L101 nessWitnessExtractor]: Location invariant before [L705-L705] (count == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:12:37,365 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] count == 0 [2024-02-02 09:12:37,365 INFO L101 nessWitnessExtractor]: Location invariant before [L695-L695] count == 0 [2024-02-02 09:12:37,365 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] count == 0 [2024-02-02 09:12:37,366 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] count == 0 [2024-02-02 09:12:37,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:12:37,751 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-ext/35_double_lock_p3_vs-pthread.i[30711,30724] [2024-02-02 09:12:37,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:12:37,776 INFO L202 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 [2024-02-02 09:12:37,852 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-ext/35_double_lock_p3_vs-pthread.i[30711,30724] Start Parsing Local [2024-02-02 09:12:37,855 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:12:37,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:12:37,906 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:12:37,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37 WrapperNode [2024-02-02 09:12:37,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:12:37,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:12:37,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:12:37,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:12:37,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:37,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:37,971 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-02-02 09:12:37,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:12:37,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:12:37,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:12:37,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:12:37,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:37,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:37,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,007 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-02-02 09:12:38,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:12:38,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:12:38,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:12:38,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:12:38,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (1/1) ... [2024-02-02 09:12:38,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:12:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:38,051 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) [2024-02-02 09:12:38,059 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 [2024-02-02 09:12:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-02-02 09:12:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-02-02 09:12:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-02 09:12:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-02 09:12:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:12:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:12:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:12:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:12:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:12:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:12:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:12:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:12:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:12:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:12:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:12:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:12:38,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:12:38,096 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:12:38,227 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:12:38,230 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:12:38,516 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:12:38,516 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:12:38,611 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:12:38,611 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-02 09:12:38,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:12:38 BoogieIcfgContainer [2024-02-02 09:12:38,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:12:38,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:12:38,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:12:38,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:12:38,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:12:35" (1/4) ... [2024-02-02 09:12:38,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13632077 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:12:38, skipping insertion in model container [2024-02-02 09:12:38,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:12:37" (2/4) ... [2024-02-02 09:12:38,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13632077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:12:38, skipping insertion in model container [2024-02-02 09:12:38,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:12:37" (3/4) ... [2024-02-02 09:12:38,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13632077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:12:38, skipping insertion in model container [2024-02-02 09:12:38,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:12:38" (4/4) ... [2024-02-02 09:12:38,621 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2024-02-02 09:12:38,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:12:38,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-02 09:12:38,639 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:12:38,753 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:38,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 130 flow [2024-02-02 09:12:38,838 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2024-02-02 09:12:38,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:38,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-02-02 09:12:38,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 61 transitions, 130 flow [2024-02-02 09:12:38,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 60 transitions, 127 flow [2024-02-02 09:12:38,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:38,877 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;@4b354e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:38,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-02-02 09:12:38,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:38,883 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:12:38,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:38,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:38,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:12:38,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:12:38,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 8676, now seen corresponding path program 1 times [2024-02-02 09:12:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850884689] [2024-02-02 09:12:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:38,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850884689] [2024-02-02 09:12:39,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850884689] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:39,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:39,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:12:39,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610800439] [2024-02-02 09:12:39,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:39,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-02-02 09:12:39,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:39,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:39,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-02-02 09:12:39,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:39,482 INFO L124 PetriNetUnfolderBase]: 432/1086 cut-off events. [2024-02-02 09:12:39,482 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 09:12:39,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1086 events. 432/1086 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6896 event pairs, 321 based on Foata normal form. 198/1181 useless extension candidates. Maximal degree in co-relation 1820. Up to 649 conditions per place. [2024-02-02 09:12:39,497 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 26 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-02-02 09:12:39,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 189 flow [2024-02-02 09:12:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-02-02 09:12:39,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6830601092896175 [2024-02-02 09:12:39,514 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 127 flow. Second operand 3 states and 125 transitions. [2024-02-02 09:12:39,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 189 flow [2024-02-02 09:12:39,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:39,524 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 148 flow [2024-02-02 09:12:39,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-02-02 09:12:39,530 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2024-02-02 09:12:39,530 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 148 flow [2024-02-02 09:12:39,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:39,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:39,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:12:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:12:39,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:12:39,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash 258824487, now seen corresponding path program 1 times [2024-02-02 09:12:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130033287] [2024-02-02 09:12:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130033287] [2024-02-02 09:12:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130033287] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:39,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133478712] [2024-02-02 09:12:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:39,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 61 [2024-02-02 09:12:39,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 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) [2024-02-02 09:12:39,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:39,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 61 [2024-02-02 09:12:39,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:40,035 INFO L124 PetriNetUnfolderBase]: 327/1077 cut-off events. [2024-02-02 09:12:40,036 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-02-02 09:12:40,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1077 events. 327/1077 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7207 event pairs, 30 based on Foata normal form. 138/1197 useless extension candidates. Maximal degree in co-relation 1846. Up to 420 conditions per place. [2024-02-02 09:12:40,050 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 38 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-02-02 09:12:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 275 flow [2024-02-02 09:12:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-02-02 09:12:40,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008196721311475 [2024-02-02 09:12:40,058 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 148 flow. Second operand 4 states and 171 transitions. [2024-02-02 09:12:40,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 275 flow [2024-02-02 09:12:40,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:40,062 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 132 flow [2024-02-02 09:12:40,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-02-02 09:12:40,063 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2024-02-02 09:12:40,063 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 132 flow [2024-02-02 09:12:40,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 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) [2024-02-02 09:12:40,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:40,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:40,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:12:40,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:12:40,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:40,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1110691295, now seen corresponding path program 1 times [2024-02-02 09:12:40,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:40,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267473411] [2024-02-02 09:12:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:40,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267473411] [2024-02-02 09:12:40,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267473411] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:40,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:40,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:40,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209766634] [2024-02-02 09:12:40,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:40,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:40,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:40,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 61 [2024-02-02 09:12:40,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:40,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:40,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 61 [2024-02-02 09:12:40,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:40,338 INFO L124 PetriNetUnfolderBase]: 272/723 cut-off events. [2024-02-02 09:12:40,339 INFO L125 PetriNetUnfolderBase]: For 39/51 co-relation queries the response was YES. [2024-02-02 09:12:40,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 723 events. 272/723 cut-off events. For 39/51 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4259 event pairs, 91 based on Foata normal form. 12/681 useless extension candidates. Maximal degree in co-relation 1290. Up to 411 conditions per place. [2024-02-02 09:12:40,344 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 28 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-02-02 09:12:40,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 200 flow [2024-02-02 09:12:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-02-02 09:12:40,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598360655737705 [2024-02-02 09:12:40,350 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 132 flow. Second operand 4 states and 161 transitions. [2024-02-02 09:12:40,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 200 flow [2024-02-02 09:12:40,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:40,354 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 127 flow [2024-02-02 09:12:40,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-02-02 09:12:40,355 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2024-02-02 09:12:40,355 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 127 flow [2024-02-02 09:12:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:40,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:40,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:40,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:12:40,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-02-02 09:12:40,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:40,357 INFO L85 PathProgramCache]: Analyzing trace with hash 71681569, now seen corresponding path program 1 times [2024-02-02 09:12:40,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:40,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675582410] [2024-02-02 09:12:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:40,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:40,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:40,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:40,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-02-02 09:12:40,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-02-02 09:12:40,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-02-02 09:12:40,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-02-02 09:12:40,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-02-02 09:12:40,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-02-02 09:12:40,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-02-02 09:12:40,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 33 remaining) [2024-02-02 09:12:40,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 33 remaining) [2024-02-02 09:12:40,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-02-02 09:12:40,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 33 remaining) [2024-02-02 09:12:40,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-02-02 09:12:40,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 33 remaining) [2024-02-02 09:12:40,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (19 of 33 remaining) [2024-02-02 09:12:40,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-02-02 09:12:40,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 33 remaining) [2024-02-02 09:12:40,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 33 remaining) [2024-02-02 09:12:40,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 33 remaining) [2024-02-02 09:12:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 33 remaining) [2024-02-02 09:12:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 33 remaining) [2024-02-02 09:12:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-02-02 09:12:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-02-02 09:12:40,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-02-02 09:12:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 33 remaining) [2024-02-02 09:12:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 33 remaining) [2024-02-02 09:12:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-02-02 09:12:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-02-02 09:12:40,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-02-02 09:12:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 33 remaining) [2024-02-02 09:12:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-02-02 09:12:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (2 of 33 remaining) [2024-02-02 09:12:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 33 remaining) [2024-02-02 09:12:40,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 33 remaining) [2024-02-02 09:12:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:12:40,406 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-02-02 09:12:40,408 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:12:40,409 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-02 09:12:40,445 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:40,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 113 transitions, 246 flow [2024-02-02 09:12:40,458 INFO L124 PetriNetUnfolderBase]: 4/95 cut-off events. [2024-02-02 09:12:40,459 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:12:40,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 95 events. 4/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 287 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 102. Up to 3 conditions per place. [2024-02-02 09:12:40,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 113 transitions, 246 flow [2024-02-02 09:12:40,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 90 transitions, 193 flow [2024-02-02 09:12:40,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:40,463 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;@4b354e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:40,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2024-02-02 09:12:40,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:40,464 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:12:40,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:40,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:40,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:12:40,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 45 more)] === [2024-02-02 09:12:40,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash 12292, now seen corresponding path program 1 times [2024-02-02 09:12:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:40,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020436646] [2024-02-02 09:12:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:40,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:40,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020436646] [2024-02-02 09:12:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020436646] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:12:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064817130] [2024-02-02 09:12:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:40,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 113 [2024-02-02 09:12:40,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:40,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:40,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 113 [2024-02-02 09:12:40,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:43,250 INFO L124 PetriNetUnfolderBase]: 14711/27134 cut-off events. [2024-02-02 09:12:43,251 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-02-02 09:12:43,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49108 conditions, 27134 events. 14711/27134 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 241487 event pairs, 10343 based on Foata normal form. 5428/30701 useless extension candidates. Maximal degree in co-relation 49095. Up to 17598 conditions per place. [2024-02-02 09:12:43,485 INFO L140 encePairwiseOnDemand]: 85/113 looper letters, 69 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-02-02 09:12:43,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 424 flow [2024-02-02 09:12:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2024-02-02 09:12:43,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7492625368731564 [2024-02-02 09:12:43,488 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 193 flow. Second operand 3 states and 254 transitions. [2024-02-02 09:12:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 424 flow [2024-02-02 09:12:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:43,491 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 302 flow [2024-02-02 09:12:43,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2024-02-02 09:12:43,492 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-02-02 09:12:43,492 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 302 flow [2024-02-02 09:12:43,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:43,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:43,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:12:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:12:43,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 45 more)] === [2024-02-02 09:12:43,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash 366710602, now seen corresponding path program 1 times [2024-02-02 09:12:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:43,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51698487] [2024-02-02 09:12:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51698487] [2024-02-02 09:12:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51698487] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:43,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:43,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458754234] [2024-02-02 09:12:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:43,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:43,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:43,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 113 [2024-02-02 09:12:43,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:43,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:43,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 113 [2024-02-02 09:12:43,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:45,845 INFO L124 PetriNetUnfolderBase]: 11943/24750 cut-off events. [2024-02-02 09:12:45,845 INFO L125 PetriNetUnfolderBase]: For 6552/6624 co-relation queries the response was YES. [2024-02-02 09:12:45,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51710 conditions, 24750 events. 11943/24750 cut-off events. For 6552/6624 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 239863 event pairs, 6291 based on Foata normal form. 2814/26405 useless extension candidates. Maximal degree in co-relation 51694. Up to 14265 conditions per place. [2024-02-02 09:12:46,110 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 74 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2024-02-02 09:12:46,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 128 transitions, 566 flow [2024-02-02 09:12:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-02-02 09:12:46,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323008849557522 [2024-02-02 09:12:46,113 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 302 flow. Second operand 4 states and 331 transitions. [2024-02-02 09:12:46,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 128 transitions, 566 flow [2024-02-02 09:12:46,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 128 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:46,140 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 270 flow [2024-02-02 09:12:46,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2024-02-02 09:12:46,144 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-02-02 09:12:46,144 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 270 flow [2024-02-02 09:12:46,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:46,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:46,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:46,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:12:46,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 45 more)] === [2024-02-02 09:12:46,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1832064896, now seen corresponding path program 1 times [2024-02-02 09:12:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954388724] [2024-02-02 09:12:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954388724] [2024-02-02 09:12:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954388724] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:46,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074208127] [2024-02-02 09:12:46,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:46,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:46,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:46,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 113 [2024-02-02 09:12:46,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:46,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:46,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 113 [2024-02-02 09:12:46,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:48,126 INFO L124 PetriNetUnfolderBase]: 11090/22422 cut-off events. [2024-02-02 09:12:48,126 INFO L125 PetriNetUnfolderBase]: For 2136/2208 co-relation queries the response was YES. [2024-02-02 09:12:48,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43627 conditions, 22422 events. 11090/22422 cut-off events. For 2136/2208 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 212232 event pairs, 5365 based on Foata normal form. 336/21534 useless extension candidates. Maximal degree in co-relation 43611. Up to 14343 conditions per place. [2024-02-02 09:12:48,306 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 60 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-02-02 09:12:48,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 443 flow [2024-02-02 09:12:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2024-02-02 09:12:48,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7101769911504425 [2024-02-02 09:12:48,308 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 270 flow. Second operand 4 states and 321 transitions. [2024-02-02 09:12:48,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 443 flow [2024-02-02 09:12:48,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 111 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:48,314 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 265 flow [2024-02-02 09:12:48,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2024-02-02 09:12:48,316 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2024-02-02 09:12:48,316 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 265 flow [2024-02-02 09:12:48,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:48,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:48,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:12:48,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 45 more)] === [2024-02-02 09:12:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -83398798, now seen corresponding path program 1 times [2024-02-02 09:12:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:48,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768857356] [2024-02-02 09:12:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768857356] [2024-02-02 09:12:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768857356] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:48,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:12:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556556094] [2024-02-02 09:12:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:48,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:48,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 113 [2024-02-02 09:12:48,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:48,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:48,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 113 [2024-02-02 09:12:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:52,989 INFO L124 PetriNetUnfolderBase]: 37778/64447 cut-off events. [2024-02-02 09:12:52,990 INFO L125 PetriNetUnfolderBase]: For 7748/7817 co-relation queries the response was YES. [2024-02-02 09:12:53,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136477 conditions, 64447 events. 37778/64447 cut-off events. For 7748/7817 co-relation queries the response was YES. Maximal size of possible extension queue 1758. Compared 574317 event pairs, 12011 based on Foata normal form. 1974/64139 useless extension candidates. Maximal degree in co-relation 136462. Up to 24688 conditions per place. [2024-02-02 09:12:53,482 INFO L140 encePairwiseOnDemand]: 93/113 looper letters, 109 selfloop transitions, 24 changer transitions 0/156 dead transitions. [2024-02-02 09:12:53,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 699 flow [2024-02-02 09:12:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-02-02 09:12:53,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.661504424778761 [2024-02-02 09:12:53,484 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 265 flow. Second operand 4 states and 299 transitions. [2024-02-02 09:12:53,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 699 flow [2024-02-02 09:12:53,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 156 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:53,489 INFO L231 Difference]: Finished difference. Result has 93 places, 99 transitions, 383 flow [2024-02-02 09:12:53,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=93, PETRI_TRANSITIONS=99} [2024-02-02 09:12:53,491 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-02-02 09:12:53,491 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 99 transitions, 383 flow [2024-02-02 09:12:53,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:53,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:53,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:12:53,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 45 more)] === [2024-02-02 09:12:53,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1361796999, now seen corresponding path program 1 times [2024-02-02 09:12:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830041332] [2024-02-02 09:12:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830041332] [2024-02-02 09:12:53,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830041332] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:53,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167420693] [2024-02-02 09:12:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:53,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:53,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 113 [2024-02-02 09:12:53,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 99 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:53,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:53,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 113 [2024-02-02 09:12:53,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:56,341 INFO L124 PetriNetUnfolderBase]: 18703/36700 cut-off events. [2024-02-02 09:12:56,341 INFO L125 PetriNetUnfolderBase]: For 18187/19306 co-relation queries the response was YES. [2024-02-02 09:12:56,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83586 conditions, 36700 events. 18703/36700 cut-off events. For 18187/19306 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 363125 event pairs, 1847 based on Foata normal form. 732/35304 useless extension candidates. Maximal degree in co-relation 83568. Up to 23608 conditions per place. [2024-02-02 09:12:56,651 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 81 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-02-02 09:12:56,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 679 flow [2024-02-02 09:12:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2024-02-02 09:12:56,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7389380530973452 [2024-02-02 09:12:56,654 INFO L175 Difference]: Start difference. First operand has 93 places, 99 transitions, 383 flow. Second operand 4 states and 334 transitions. [2024-02-02 09:12:56,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 679 flow [2024-02-02 09:12:56,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 134 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:56,669 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 362 flow [2024-02-02 09:12:56,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2024-02-02 09:12:56,671 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-02-02 09:12:56,671 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 362 flow [2024-02-02 09:12:56,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:56,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:56,672 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:56,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:12:56,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 45 more)] === [2024-02-02 09:12:56,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -733976035, now seen corresponding path program 1 times [2024-02-02 09:12:56,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:56,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746675805] [2024-02-02 09:12:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:56,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:56,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:56,705 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:56,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (47 of 48 remaining) [2024-02-02 09:12:56,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 48 remaining) [2024-02-02 09:12:56,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 48 remaining) [2024-02-02 09:12:56,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 48 remaining) [2024-02-02 09:12:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 48 remaining) [2024-02-02 09:12:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 48 remaining) [2024-02-02 09:12:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 48 remaining) [2024-02-02 09:12:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 48 remaining) [2024-02-02 09:12:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 48 remaining) [2024-02-02 09:12:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 48 remaining) [2024-02-02 09:12:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 48 remaining) [2024-02-02 09:12:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 48 remaining) [2024-02-02 09:12:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 48 remaining) [2024-02-02 09:12:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (34 of 48 remaining) [2024-02-02 09:12:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 48 remaining) [2024-02-02 09:12:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 48 remaining) [2024-02-02 09:12:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 48 remaining) [2024-02-02 09:12:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 48 remaining) [2024-02-02 09:12:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 48 remaining) [2024-02-02 09:12:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 48 remaining) [2024-02-02 09:12:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 48 remaining) [2024-02-02 09:12:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 48 remaining) [2024-02-02 09:12:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 48 remaining) [2024-02-02 09:12:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 48 remaining) [2024-02-02 09:12:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 48 remaining) [2024-02-02 09:12:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 48 remaining) [2024-02-02 09:12:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 48 remaining) [2024-02-02 09:12:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 48 remaining) [2024-02-02 09:12:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 48 remaining) [2024-02-02 09:12:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 48 remaining) [2024-02-02 09:12:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 48 remaining) [2024-02-02 09:12:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 48 remaining) [2024-02-02 09:12:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 48 remaining) [2024-02-02 09:12:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 48 remaining) [2024-02-02 09:12:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 48 remaining) [2024-02-02 09:12:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 48 remaining) [2024-02-02 09:12:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 48 remaining) [2024-02-02 09:12:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 48 remaining) [2024-02-02 09:12:56,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 48 remaining) [2024-02-02 09:12:56,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (8 of 48 remaining) [2024-02-02 09:12:56,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 48 remaining) [2024-02-02 09:12:56,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 48 remaining) [2024-02-02 09:12:56,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 48 remaining) [2024-02-02 09:12:56,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 48 remaining) [2024-02-02 09:12:56,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 48 remaining) [2024-02-02 09:12:56,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (2 of 48 remaining) [2024-02-02 09:12:56,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 48 remaining) [2024-02-02 09:12:56,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 48 remaining) [2024-02-02 09:12:56,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:12:56,715 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-02 09:12:56,716 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:12:56,716 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-02 09:12:56,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 165 transitions, 366 flow [2024-02-02 09:12:57,063 INFO L124 PetriNetUnfolderBase]: 5/128 cut-off events. [2024-02-02 09:12:57,063 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-02 09:12:57,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 128 events. 5/128 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 460 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2024-02-02 09:12:57,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 165 transitions, 366 flow [2024-02-02 09:12:57,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 120 transitions, 261 flow [2024-02-02 09:12:57,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:57,067 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;@4b354e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:57,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2024-02-02 09:12:57,068 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:57,069 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:12:57,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:57,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:57,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:12:57,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 60 more)] === [2024-02-02 09:12:57,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:57,070 INFO L85 PathProgramCache]: Analyzing trace with hash 17572, now seen corresponding path program 1 times [2024-02-02 09:12:57,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88640734] [2024-02-02 09:12:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88640734] [2024-02-02 09:12:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88640734] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:57,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:57,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:12:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306410602] [2024-02-02 09:12:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:57,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 165 [2024-02-02 09:12:57,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:57,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:57,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 165 [2024-02-02 09:12:57,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand