./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-2-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/25_stack_longer-2-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/25_stack_longer-2-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/25_stack_longer-2-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-?-80b1b13-m [2024-01-31 16:42:40,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:42:40,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:42:40,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:42:40,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:42:40,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:42:40,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:42:40,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:42:40,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:42:40,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:42:40,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:42:40,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:42:40,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:42:40,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:42:40,994 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:42:40,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:42:40,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:42:40,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:42:40,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:42:40,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:42:40,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:42:40,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:42:40,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:42:40,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:42:40,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:42:40,997 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:42:40,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:42:40,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:42:40,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:42:40,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:42:40,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:42:40,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:42:40,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:42:41,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:42:41,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:42:41,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:42:41,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:42:41,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:42:41,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:42:41,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:42:41,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:42:41,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:42:41,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:42:41,002 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:42:41,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:42:41,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:42:41,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:42:41,248 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:42:41,249 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:42:41,250 INFO L431 ainManager$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/25_stack_longer-2-pthread.yml/witness.yml [2024-01-31 16:42:41,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:42:41,554 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:42:41,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-2-pthread.i [2024-01-31 16:42:42,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:42:42,726 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:42:42,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-2-pthread.i [2024-01-31 16:42:42,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdaa2b78/a2a9435154db443ead4fa5f556c9ea86/FLAGfc5ca961d [2024-01-31 16:42:42,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdaa2b78/a2a9435154db443ead4fa5f556c9ea86 [2024-01-31 16:42:42,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:42:42,755 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:42:42,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:42:42,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:42:42,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:42:42,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:42:41" (1/2) ... [2024-01-31 16:42:42,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8826fab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:42:42, skipping insertion in model container [2024-01-31 16:42:42,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:42:41" (1/2) ... [2024-01-31 16:42:42,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23859fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:42:42, skipping insertion in model container [2024-01-31 16:42:42,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:42:42" (2/2) ... [2024-01-31 16:42:42,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8826fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:42, skipping insertion in model container [2024-01-31 16:42:42,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:42:42" (2/2) ... [2024-01-31 16:42:42,765 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:42:42,940 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:42:42,941 INFO L98 nessWitnessExtractor]: Location invariant after [L740-L740] ((((((2147483649LL + (long long )arg) + (long long )r >= 0LL) && ((2147483648LL - (long long )arg) + (long long )r >= 0LL)) && ((2147483647LL + (long long )arg) - (long long )r >= 0LL)) && ((2147483646LL - (long long )arg) - (long long )r >= 0LL)) && (-1 == r)) && (r == -1) [2024-01-31 16:42:42,941 INFO L98 nessWitnessExtractor]: Location invariant after [L715-L715] ((((4294967296LL + (long long )newTop) + (long long )oldTop >= 0LL) && ((4294967295LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((4294967295LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((4294967294LL - (long long )newTop) - (long long )oldTop >= 0LL) [2024-01-31 16:42:42,941 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] r == 1 [2024-01-31 16:42:42,942 INFO L98 nessWitnessExtractor]: Location invariant after [L739-L739] ((((4294967296LL + (long long )arg) + (long long )r >= 0LL) && ((4294967295LL - (long long )arg) + (long long )r >= 0LL)) && ((4294967295LL + (long long )arg) - (long long )r >= 0LL)) && ((4294967294LL - (long long )arg) - (long long )r >= 0LL) [2024-01-31 16:42:42,982 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:42:43,186 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-2-pthread.i[31355,31368] [2024-01-31 16:42:43,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:42:43,212 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:42:43,263 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:42:43,266 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/25_stack_longer-2-pthread.i[31355,31368] Start Parsing Local [2024-01-31 16:42:43,289 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:42:43,290 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:42:43,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:42:43,347 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:42:43,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43 WrapperNode [2024-01-31 16:42:43,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:42:43,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:42:43,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:42:43,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:42:43,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,407 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 136 [2024-01-31 16:42:43,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:42:43,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:42:43,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:42:43,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:42:43,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,451 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 5, 5, 1]. 38 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-01-31 16:42:43,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:42:43,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:42:43,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:42:43,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:42:43,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (1/1) ... [2024-01-31 16:42:43,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:42:43,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:42:43,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:42:43,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:42:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:42:43,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:42:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:42:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:42:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:42:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:42:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:42:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:42:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:42:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:42:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:42:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:42:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:42:43,539 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:42:43,653 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:42:43,655 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:42:43,799 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:42:43,799 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:42:43,966 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:42:43,967 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 16:42:43,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:42:43 BoogieIcfgContainer [2024-01-31 16:42:43,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:42:43,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:42:43,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:42:43,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:42:43,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:42:41" (1/4) ... [2024-01-31 16:42:43,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dedfc9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:42:43, skipping insertion in model container [2024-01-31 16:42:43,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:42:42" (2/4) ... [2024-01-31 16:42:43,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dedfc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:42:43, skipping insertion in model container [2024-01-31 16:42:43,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:42:43" (3/4) ... [2024-01-31 16:42:43,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dedfc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:42:43, skipping insertion in model container [2024-01-31 16:42:43,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:42:43" (4/4) ... [2024-01-31 16:42:43,977 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-2-pthread.i [2024-01-31 16:42:43,995 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:42:43,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:42:43,995 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:42:44,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 36 transitions, 76 flow [2024-01-31 16:42:44,119 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-01-31 16:42:44,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:42:44,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 4/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-31 16:42:44,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 36 transitions, 76 flow [2024-01-31 16:42:44,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 36 transitions, 76 flow [2024-01-31 16:42:44,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:44,148 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;@2921a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:44,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:42:44,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:44,155 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-01-31 16:42:44,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:42:44,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:44,157 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:42:44,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:42:44,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1424821897, now seen corresponding path program 1 times [2024-01-31 16:42:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:44,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896672029] [2024-01-31 16:42:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:44,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:44,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-01-31 16:42:44,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-01-31 16:42:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-01-31 16:42:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 5 remaining) [2024-01-31 16:42:44,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-31 16:42:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:42:44,415 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:42:44,419 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:44,419 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:42:44,459 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:44,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 67 transitions, 144 flow [2024-01-31 16:42:44,485 INFO L124 PetriNetUnfolderBase]: 8/72 cut-off events. [2024-01-31 16:42:44,485 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:42:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 8/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2024-01-31 16:42:44,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 67 transitions, 144 flow [2024-01-31 16:42:44,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 67 transitions, 144 flow [2024-01-31 16:42:44,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:44,490 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;@2921a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:44,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 16:42:44,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:44,496 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-01-31 16:42:44,496 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:42:44,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:44,497 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:42:44,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:42:44,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1866601474, now seen corresponding path program 1 times [2024-01-31 16:42:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:44,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396127146] [2024-01-31 16:42:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:44,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:44,563 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:44,563 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-01-31 16:42:44,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-01-31 16:42:44,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-01-31 16:42:44,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-01-31 16:42:44,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-01-31 16:42:44,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 7 remaining) [2024-01-31 16:42:44,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-31 16:42:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:42:44,566 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:42:44,567 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:44,567 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:42:44,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:44,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 214 flow [2024-01-31 16:42:44,667 INFO L124 PetriNetUnfolderBase]: 12/106 cut-off events. [2024-01-31 16:42:44,667 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:42:44,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 12/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 293 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2024-01-31 16:42:44,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 214 flow [2024-01-31 16:42:44,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 214 flow [2024-01-31 16:42:44,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:44,672 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;@2921a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:44,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-01-31 16:42:44,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:44,677 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-01-31 16:42:44,677 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:42:44,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:44,678 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-31 16:42:44,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-31 16:42:44,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2112453418, now seen corresponding path program 1 times [2024-01-31 16:42:44,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331816809] [2024-01-31 16:42:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:44,716 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:44,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-01-31 16:42:44,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 9 remaining) [2024-01-31 16:42:44,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-01-31 16:42:44,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 9 remaining) [2024-01-31 16:42:44,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-01-31 16:42:44,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 9 remaining) [2024-01-31 16:42:44,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-01-31 16:42:44,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 9 remaining) [2024-01-31 16:42:44,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-01-31 16:42:44,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:42:44,719 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:42:44,720 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:44,720 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-31 16:42:44,778 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:44,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 129 transitions, 286 flow [2024-01-31 16:42:44,796 INFO L124 PetriNetUnfolderBase]: 16/140 cut-off events. [2024-01-31 16:42:44,797 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:42:44,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 140 events. 16/140 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 461 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 123. Up to 5 conditions per place. [2024-01-31 16:42:44,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 129 transitions, 286 flow [2024-01-31 16:42:44,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 129 transitions, 286 flow [2024-01-31 16:42:44,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:44,801 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;@2921a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:44,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-01-31 16:42:44,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:44,807 INFO L124 PetriNetUnfolderBase]: 3/56 cut-off events. [2024-01-31 16:42:44,807 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:42:44,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:44,807 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-01-31 16:42:44,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-01-31 16:42:44,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash 622938844, now seen corresponding path program 1 times [2024-01-31 16:42:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:44,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944970621] [2024-01-31 16:42:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:44,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:44,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:44,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:44,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-01-31 16:42:44,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 11 remaining) [2024-01-31 16:42:44,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2024-01-31 16:42:44,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 11 remaining) [2024-01-31 16:42:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2024-01-31 16:42:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 11 remaining) [2024-01-31 16:42:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2024-01-31 16:42:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 11 remaining) [2024-01-31 16:42:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2024-01-31 16:42:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 11 remaining) [2024-01-31 16:42:44,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2024-01-31 16:42:44,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:42:44,866 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:42:44,866 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:44,867 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-01-31 16:42:44,919 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:44,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 160 transitions, 360 flow [2024-01-31 16:42:44,992 INFO L124 PetriNetUnfolderBase]: 20/174 cut-off events. [2024-01-31 16:42:44,992 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-31 16:42:44,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 174 events. 20/174 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 616 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 158. Up to 6 conditions per place. [2024-01-31 16:42:45,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 160 transitions, 360 flow [2024-01-31 16:42:45,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 160 transitions, 360 flow [2024-01-31 16:42:45,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:45,035 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;@2921a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:45,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-01-31 16:42:45,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:45,048 INFO L124 PetriNetUnfolderBase]: 7/87 cut-off events. [2024-01-31 16:42:45,048 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-31 16:42:45,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:45,049 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:42:45,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-01-31 16:42:45,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 116770933, now seen corresponding path program 1 times [2024-01-31 16:42:45,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:45,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837405418] [2024-01-31 16:42:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:45,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:45,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:45,141 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:45,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-01-31 16:42:45,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 13 remaining) [2024-01-31 16:42:45,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2024-01-31 16:42:45,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 13 remaining) [2024-01-31 16:42:45,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2024-01-31 16:42:45,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining) [2024-01-31 16:42:45,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2024-01-31 16:42:45,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining) [2024-01-31 16:42:45,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2024-01-31 16:42:45,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 13 remaining) [2024-01-31 16:42:45,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2024-01-31 16:42:45,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 13 remaining) [2024-01-31 16:42:45,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2024-01-31 16:42:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:42:45,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:42:45,144 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:45,144 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-01-31 16:42:45,221 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:45,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 191 transitions, 436 flow [2024-01-31 16:42:45,254 INFO L124 PetriNetUnfolderBase]: 24/208 cut-off events. [2024-01-31 16:42:45,254 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-01-31 16:42:45,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 208 events. 24/208 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 795 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 199. Up to 7 conditions per place. [2024-01-31 16:42:45,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 191 transitions, 436 flow [2024-01-31 16:42:45,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 191 transitions, 436 flow [2024-01-31 16:42:45,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:45,262 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;@2921a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:45,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-01-31 16:42:45,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:45,276 INFO L124 PetriNetUnfolderBase]: 7/90 cut-off events. [2024-01-31 16:42:45,276 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-01-31 16:42:45,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:45,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:42:45,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-01-31 16:42:45,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1700113478, now seen corresponding path program 1 times [2024-01-31 16:42:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:45,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627564189] [2024-01-31 16:42:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:42:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:42:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:42:45,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627564189] [2024-01-31 16:42:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627564189] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:42:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:42:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:42:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101076035] [2024-01-31 16:42:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:42:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:42:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:42:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:42:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:42:45,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 191 [2024-01-31 16:42:45,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 191 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:42:45,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:42:45,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 191 [2024-01-31 16:42:45,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand