./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf-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/40_barrier_vf-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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/40_barrier_vf-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/40_barrier_vf-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-8857f20-m [2024-01-29 23:01:06,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 23:01:06,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 23:01:06,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 23:01:06,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 23:01:06,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 23:01:06,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 23:01:06,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 23:01:06,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 23:01:06,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 23:01:06,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 23:01:06,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 23:01:06,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 23:01:06,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 23:01:06,337 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 23:01:06,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 23:01:06,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 23:01:06,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 23:01:06,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 23:01:06,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 23:01:06,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 23:01:06,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 23:01:06,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 23:01:06,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 23:01:06,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 23:01:06,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 23:01:06,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 23:01:06,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 23:01:06,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 23:01:06,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 23:01:06,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 23:01:06,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 23:01:06,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 23:01:06,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 23:01:06,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 23:01:06,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 23:01:06,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 23:01:06,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 23:01:06,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 23:01:06,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 23:01:06,343 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 23:01:06,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 23:01:06,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 23:01:06,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 23:01:06,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 23:01:06,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 23:01:06,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 23:01:06,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 23:01:06,590 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 23:01:06,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf-pthread.i [2024-01-29 23:01:07,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 23:01:08,005 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 23:01:08,007 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/40_barrier_vf-pthread.i [2024-01-29 23:01:08,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf50eb07e/513285e93a824c69ae529efb55032e77/FLAGd699213ae [2024-01-29 23:01:08,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf50eb07e/513285e93a824c69ae529efb55032e77 [2024-01-29 23:01:08,039 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 23:01:08,040 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 23:01:08,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/40_barrier_vf-pthread.yml/witness.yml [2024-01-29 23:01:08,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 23:01:08,125 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 23:01:08,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 23:01:08,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 23:01:08,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 23:01:08,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:01:08" (1/2) ... [2024-01-29 23:01:08,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354e93c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:01:08, skipping insertion in model container [2024-01-29 23:01:08,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:01:08" (1/2) ... [2024-01-29 23:01:08,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f2f84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:01:08, skipping insertion in model container [2024-01-29 23:01:08,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 11:01:08" (2/2) ... [2024-01-29 23:01:08,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354e93c1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08, skipping insertion in model container [2024-01-29 23:01:08,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 11:01:08" (2/2) ... [2024-01-29 23:01:08,136 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 23:01:08,161 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 23:01:08,163 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] (unsigned long )arg == 0UL [2024-01-29 23:01:08,163 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-29 23:01:08,163 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] ((unsigned long )arg == 0UL) && ((unsigned long )arg == 0UL) [2024-01-29 23:01:08,163 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] COND == (_Bool)0 || COND == (_Bool)1 [2024-01-29 23:01:08,163 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L700] COND == (_Bool)0 || COND == (_Bool)1 [2024-01-29 23:01:08,164 INFO L98 nessWitnessExtractor]: Location invariant after [L694-L700] COND == (_Bool)0 [2024-01-29 23:01:08,164 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] COND == (_Bool)1 [2024-01-29 23:01:08,164 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (COND == (_Bool)1) && ((unsigned int )count == 3U) [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant after [L694-L697] (COND == (_Bool)1) && ((unsigned int )count == 3U) [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant after [L694-L697] COND == (_Bool)1 [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] ((unsigned long )arg == 0UL) && ((unsigned long )arg == 0UL) [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant after [L691-L701] COND == (_Bool)1 [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] ((unsigned int )count == 3U) && (COND == (_Bool)0 || COND == (_Bool)1) [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (unsigned int )count == 3U [2024-01-29 23:01:08,165 INFO L98 nessWitnessExtractor]: Loop invariant at [L699-L700] COND == (_Bool)0 || COND == (_Bool)1 [2024-01-29 23:01:08,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 23:01:08,442 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/40_barrier_vf-pthread.i[30842,30855] [2024-01-29 23:01:08,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 23:01:08,467 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 Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 23:01:08,553 WARN L424 MainDispatcher]: Unable to annotate void Barrier2() { pthread_mutex_lock(&MTX); count++; if (count == 3) { COND = 1; pthread_cond_broadcast(&CONDVAR); count = 0; } else { while (!COND) pthread_cond_wait(&CONDVAR, &MTX); } pthread_mutex_unlock(&MTX); } with a witness entry Start Parsing Local [2024-01-29 23:01:08,554 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/40_barrier_vf-pthread.i[30842,30855] Start Parsing Local Start Parsing Local [2024-01-29 23:01:08,557 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-29 23:01:08,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 23:01:08,589 INFO L206 MainTranslator]: Completed translation [2024-01-29 23:01:08,589 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08 WrapperNode [2024-01-29 23:01:08,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 23:01:08,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 23:01:08,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 23:01:08,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 23:01:08,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,638 INFO L138 Inliner]: procedures = 165, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-01-29 23:01:08,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 23:01:08,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 23:01:08,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 23:01:08,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 23:01:08,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,669 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 10, 1]. 56 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 10, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-01-29 23:01:08,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,670 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 23:01:08,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 23:01:08,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 23:01:08,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 23:01:08,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (1/1) ... [2024-01-29 23:01:08,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 23:01:08,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 23:01:08,777 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) [2024-01-29 23:01:08,851 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 [2024-01-29 23:01:08,874 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-29 23:01:08,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 23:01:08,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 23:01:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 23:01:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 23:01:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 23:01:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 23:01:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 23:01:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 23:01:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 23:01:08,877 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 23:01:08,980 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 23:01:08,981 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 23:01:09,170 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 23:01:09,171 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 23:01:09,294 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 23:01:09,295 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-29 23:01:09,295 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:01:09 BoogieIcfgContainer [2024-01-29 23:01:09,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 23:01:09,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 23:01:09,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 23:01:09,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 23:01:09,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:01:08" (1/4) ... [2024-01-29 23:01:09,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cb6734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:01:09, skipping insertion in model container [2024-01-29 23:01:09,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 11:01:08" (2/4) ... [2024-01-29 23:01:09,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cb6734 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 11:01:09, skipping insertion in model container [2024-01-29 23:01:09,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:01:08" (3/4) ... [2024-01-29 23:01:09,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cb6734 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 11:01:09, skipping insertion in model container [2024-01-29 23:01:09,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:01:09" (4/4) ... [2024-01-29 23:01:09,307 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf-pthread.i [2024-01-29 23:01:09,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 23:01:09,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-01-29 23:01:09,326 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 23:01:09,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 23:01:09,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 98 flow [2024-01-29 23:01:09,441 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2024-01-29 23:01:09,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 23:01:09,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-01-29 23:01:09,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 98 flow [2024-01-29 23:01:09,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 47 transitions, 98 flow [2024-01-29 23:01:09,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 23:01:09,466 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;@21eface4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 23:01:09,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-01-29 23:01:09,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 23:01:09,471 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-29 23:01:09,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 23:01:09,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:09,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 23:01:09,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-01-29 23:01:09,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash 250909373, now seen corresponding path program 1 times [2024-01-29 23:01:09,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145824049] [2024-01-29 23:01:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:09,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:09,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145824049] [2024-01-29 23:01:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145824049] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:09,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:09,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952368662] [2024-01-29 23:01:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:09,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:09,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:09,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:09,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 47 [2024-01-29 23:01:09,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:09,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:09,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 47 [2024-01-29 23:01:09,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:09,967 INFO L124 PetriNetUnfolderBase]: 28/139 cut-off events. [2024-01-29 23:01:09,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 23:01:09,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 139 events. 28/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 568 event pairs, 0 based on Foata normal form. 9/121 useless extension candidates. Maximal degree in co-relation 192. Up to 55 conditions per place. [2024-01-29 23:01:09,971 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-01-29 23:01:09,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 130 flow [2024-01-29 23:01:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:01:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:01:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-01-29 23:01:09,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074468085106383 [2024-01-29 23:01:09,983 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 98 flow. Second operand 4 states and 133 transitions. [2024-01-29 23:01:09,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 130 flow [2024-01-29 23:01:09,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 23:01:09,990 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 92 flow [2024-01-29 23:01:09,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-01-29 23:01:09,994 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-01-29 23:01:09,994 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 92 flow [2024-01-29 23:01:09,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:09,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:09,995 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-29 23:01:09,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 23:01:09,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-01-29 23:01:09,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash -811773881, now seen corresponding path program 1 times [2024-01-29 23:01:09,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:09,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099288673] [2024-01-29 23:01:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:09,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 23:01:10,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 23:01:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 23:01:10,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 23:01:10,074 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 23:01:10,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-01-29 23:01:10,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 31 remaining) [2024-01-29 23:01:10,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 31 remaining) [2024-01-29 23:01:10,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 31 remaining) [2024-01-29 23:01:10,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 31 remaining) [2024-01-29 23:01:10,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 31 remaining) [2024-01-29 23:01:10,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (15 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 31 remaining) [2024-01-29 23:01:10,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 31 remaining) [2024-01-29 23:01:10,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (0 of 31 remaining) [2024-01-29 23:01:10,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 23:01:10,082 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-29 23:01:10,084 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 23:01:10,084 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-29 23:01:10,120 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 23:01:10,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 188 flow [2024-01-29 23:01:10,150 INFO L124 PetriNetUnfolderBase]: 4/94 cut-off events. [2024-01-29 23:01:10,150 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 23:01:10,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 94 events. 4/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 313 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2024-01-29 23:01:10,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 89 transitions, 188 flow [2024-01-29 23:01:10,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 89 transitions, 188 flow [2024-01-29 23:01:10,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 23:01:10,172 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;@21eface4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 23:01:10,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-01-29 23:01:10,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 23:01:10,175 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-29 23:01:10,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 23:01:10,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:10,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 23:01:10,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 23:01:10,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash 335883231, now seen corresponding path program 1 times [2024-01-29 23:01:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827086326] [2024-01-29 23:01:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:10,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:10,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:10,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827086326] [2024-01-29 23:01:10,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827086326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:10,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:10,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644658474] [2024-01-29 23:01:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:10,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 89 [2024-01-29 23:01:10,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:10,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:10,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 89 [2024-01-29 23:01:10,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:10,705 INFO L124 PetriNetUnfolderBase]: 769/2323 cut-off events. [2024-01-29 23:01:10,705 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-01-29 23:01:10,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 2323 events. 769/2323 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 19510 event pairs, 320 based on Foata normal form. 138/1980 useless extension candidates. Maximal degree in co-relation 3230. Up to 1073 conditions per place. [2024-01-29 23:01:10,730 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 38 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-01-29 23:01:10,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 289 flow [2024-01-29 23:01:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:01:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:01:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-01-29 23:01:10,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7780898876404494 [2024-01-29 23:01:10,745 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 188 flow. Second operand 4 states and 277 transitions. [2024-01-29 23:01:10,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 289 flow [2024-01-29 23:01:10,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 97 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 23:01:10,762 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 180 flow [2024-01-29 23:01:10,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2024-01-29 23:01:10,763 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2024-01-29 23:01:10,763 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 180 flow [2024-01-29 23:01:10,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:10,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:10,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:01:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 23:01:10,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 23:01:10,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash -976065739, now seen corresponding path program 1 times [2024-01-29 23:01:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:10,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345230340] [2024-01-29 23:01:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:10,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345230340] [2024-01-29 23:01:10,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345230340] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:10,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:10,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 23:01:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556841568] [2024-01-29 23:01:10,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:01:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:10,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:01:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:01:10,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2024-01-29 23:01:10,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:10,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:10,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2024-01-29 23:01:10,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:11,197 INFO L124 PetriNetUnfolderBase]: 1367/3127 cut-off events. [2024-01-29 23:01:11,197 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-01-29 23:01:11,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 3127 events. 1367/3127 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23829 event pairs, 484 based on Foata normal form. 156/3057 useless extension candidates. Maximal degree in co-relation 5329. Up to 1865 conditions per place. [2024-01-29 23:01:11,215 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 53 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-01-29 23:01:11,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 98 transitions, 327 flow [2024-01-29 23:01:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:01:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:01:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-01-29 23:01:11,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7528089887640449 [2024-01-29 23:01:11,216 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 180 flow. Second operand 3 states and 201 transitions. [2024-01-29 23:01:11,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 98 transitions, 327 flow [2024-01-29 23:01:11,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:01:11,218 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 214 flow [2024-01-29 23:01:11,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-01-29 23:01:11,219 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -2 predicate places. [2024-01-29 23:01:11,219 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 214 flow [2024-01-29 23:01:11,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:11,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:11,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-29 23:01:11,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 23:01:11,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 23:01:11,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1044101174, now seen corresponding path program 1 times [2024-01-29 23:01:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959350575] [2024-01-29 23:01:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 23:01:11,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:11,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959350575] [2024-01-29 23:01:11,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959350575] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:11,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:11,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:11,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144188972] [2024-01-29 23:01:11,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:11,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:11,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 89 [2024-01-29 23:01:11,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:11,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:11,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 89 [2024-01-29 23:01:11,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:11,466 INFO L124 PetriNetUnfolderBase]: 606/1753 cut-off events. [2024-01-29 23:01:11,466 INFO L125 PetriNetUnfolderBase]: For 120/150 co-relation queries the response was YES. [2024-01-29 23:01:11,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1753 events. 606/1753 cut-off events. For 120/150 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13655 event pairs, 33 based on Foata normal form. 66/1614 useless extension candidates. Maximal degree in co-relation 2921. Up to 846 conditions per place. [2024-01-29 23:01:11,478 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 48 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-01-29 23:01:11,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 358 flow [2024-01-29 23:01:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:01:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:01:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-01-29 23:01:11,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7837078651685393 [2024-01-29 23:01:11,479 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 214 flow. Second operand 4 states and 279 transitions. [2024-01-29 23:01:11,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 358 flow [2024-01-29 23:01:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 104 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 23:01:11,482 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 209 flow [2024-01-29 23:01:11,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-01-29 23:01:11,483 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2024-01-29 23:01:11,483 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 209 flow [2024-01-29 23:01:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:11,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:11,483 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-29 23:01:11,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 23:01:11,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 23:01:11,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1992572252, now seen corresponding path program 1 times [2024-01-29 23:01:11,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:11,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105864188] [2024-01-29 23:01:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:11,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 23:01:11,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 23:01:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 23:01:11,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 23:01:11,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 46 remaining) [2024-01-29 23:01:11,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (30 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 46 remaining) [2024-01-29 23:01:11,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (15 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 46 remaining) [2024-01-29 23:01:11,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 46 remaining) [2024-01-29 23:01:11,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (0 of 46 remaining) [2024-01-29 23:01:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 23:01:11,504 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-29 23:01:11,504 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 23:01:11,504 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-29 23:01:11,526 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 23:01:11,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 131 transitions, 280 flow [2024-01-29 23:01:11,536 INFO L124 PetriNetUnfolderBase]: 6/139 cut-off events. [2024-01-29 23:01:11,537 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-29 23:01:11,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 6/139 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 597 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2024-01-29 23:01:11,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 131 transitions, 280 flow [2024-01-29 23:01:11,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 131 transitions, 280 flow [2024-01-29 23:01:11,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 23:01:11,540 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;@21eface4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 23:01:11,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-29 23:01:11,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 23:01:11,541 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 23:01:11,542 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 23:01:11,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:11,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 23:01:11,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 23:01:11,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash 460936587, now seen corresponding path program 1 times [2024-01-29 23:01:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907317828] [2024-01-29 23:01:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:11,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:11,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907317828] [2024-01-29 23:01:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907317828] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600516266] [2024-01-29 23:01:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:11,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 131 [2024-01-29 23:01:11,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 131 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:11,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:11,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 131 [2024-01-29 23:01:11,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:14,064 INFO L124 PetriNetUnfolderBase]: 13672/32314 cut-off events. [2024-01-29 23:01:14,064 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2024-01-29 23:01:14,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50663 conditions, 32314 events. 13672/32314 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 373223 event pairs, 7770 based on Foata normal form. 1839/27813 useless extension candidates. Maximal degree in co-relation 42890. Up to 16741 conditions per place. [2024-01-29 23:01:14,307 INFO L140 encePairwiseOnDemand]: 122/131 looper letters, 60 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2024-01-29 23:01:14,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 149 transitions, 452 flow [2024-01-29 23:01:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:01:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:01:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 421 transitions. [2024-01-29 23:01:14,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8034351145038168 [2024-01-29 23:01:14,309 INFO L175 Difference]: Start difference. First operand has 132 places, 131 transitions, 280 flow. Second operand 4 states and 421 transitions. [2024-01-29 23:01:14,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 149 transitions, 452 flow [2024-01-29 23:01:14,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 448 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-29 23:01:14,313 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 268 flow [2024-01-29 23:01:14,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-01-29 23:01:14,314 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2024-01-29 23:01:14,314 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 268 flow [2024-01-29 23:01:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:14,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:14,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-29 23:01:14,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 23:01:14,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 23:01:14,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash 683953898, now seen corresponding path program 1 times [2024-01-29 23:01:14,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:14,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152873435] [2024-01-29 23:01:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:14,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 23:01:14,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:14,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152873435] [2024-01-29 23:01:14,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152873435] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:14,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:14,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:14,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579573626] [2024-01-29 23:01:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:14,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:14,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:14,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 131 [2024-01-29 23:01:14,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:14,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:14,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 131 [2024-01-29 23:01:14,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:16,469 INFO L124 PetriNetUnfolderBase]: 12805/29985 cut-off events. [2024-01-29 23:01:16,470 INFO L125 PetriNetUnfolderBase]: For 470/470 co-relation queries the response was YES. [2024-01-29 23:01:16,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47218 conditions, 29985 events. 12805/29985 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 343185 event pairs, 3540 based on Foata normal form. 792/25442 useless extension candidates. Maximal degree in co-relation 47201. Up to 15763 conditions per place. [2024-01-29 23:01:16,675 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 70 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2024-01-29 23:01:16,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 156 transitions, 481 flow [2024-01-29 23:01:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:01:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:01:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2024-01-29 23:01:16,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8072519083969466 [2024-01-29 23:01:16,677 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 268 flow. Second operand 4 states and 423 transitions. [2024-01-29 23:01:16,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 156 transitions, 481 flow [2024-01-29 23:01:16,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 156 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:01:16,680 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 263 flow [2024-01-29 23:01:16,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-01-29 23:01:16,681 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2024-01-29 23:01:16,681 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 263 flow [2024-01-29 23:01:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:16,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:16,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:01:16,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 23:01:16,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 23:01:16,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash 751947308, now seen corresponding path program 1 times [2024-01-29 23:01:16,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:16,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765139273] [2024-01-29 23:01:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:16,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765139273] [2024-01-29 23:01:16,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765139273] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:16,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:16,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 23:01:16,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108528446] [2024-01-29 23:01:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:16,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:01:16,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:01:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:01:16,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 131 [2024-01-29 23:01:16,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:16,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:16,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 131 [2024-01-29 23:01:16,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:21,167 INFO L124 PetriNetUnfolderBase]: 44219/74705 cut-off events. [2024-01-29 23:01:21,168 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2024-01-29 23:01:21,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135610 conditions, 74705 events. 44219/74705 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 3687. Compared 712512 event pairs, 16828 based on Foata normal form. 1527/71857 useless extension candidates. Maximal degree in co-relation 135594. Up to 57449 conditions per place. [2024-01-29 23:01:21,723 INFO L140 encePairwiseOnDemand]: 112/131 looper letters, 78 selfloop transitions, 4 changer transitions 0/143 dead transitions. [2024-01-29 23:01:21,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 143 transitions, 483 flow [2024-01-29 23:01:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:01:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:01:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2024-01-29 23:01:21,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7582697201017812 [2024-01-29 23:01:21,725 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 263 flow. Second operand 3 states and 298 transitions. [2024-01-29 23:01:21,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 143 transitions, 483 flow [2024-01-29 23:01:21,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 143 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:01:21,730 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 314 flow [2024-01-29 23:01:21,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-01-29 23:01:21,731 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2024-01-29 23:01:21,731 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 314 flow [2024-01-29 23:01:21,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:21,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:21,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-29 23:01:21,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 23:01:21,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 23:01:21,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 239171532, now seen corresponding path program 1 times [2024-01-29 23:01:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:21,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110304674] [2024-01-29 23:01:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-29 23:01:21,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:21,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110304674] [2024-01-29 23:01:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110304674] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:21,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:21,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809208546] [2024-01-29 23:01:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:21,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 131 [2024-01-29 23:01:21,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:21,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:21,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 131 [2024-01-29 23:01:21,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:23,610 INFO L124 PetriNetUnfolderBase]: 13066/28132 cut-off events. [2024-01-29 23:01:23,611 INFO L125 PetriNetUnfolderBase]: For 3115/4689 co-relation queries the response was YES. [2024-01-29 23:01:23,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50459 conditions, 28132 events. 13066/28132 cut-off events. For 3115/4689 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 303269 event pairs, 1885 based on Foata normal form. 945/25691 useless extension candidates. Maximal degree in co-relation 50441. Up to 14838 conditions per place. [2024-01-29 23:01:23,791 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 86 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2024-01-29 23:01:23,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 608 flow [2024-01-29 23:01:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:01:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:01:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2024-01-29 23:01:23,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8244274809160306 [2024-01-29 23:01:23,793 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 314 flow. Second operand 4 states and 432 transitions. [2024-01-29 23:01:23,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 608 flow [2024-01-29 23:01:23,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 169 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 23:01:23,802 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 308 flow [2024-01-29 23:01:23,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-01-29 23:01:23,805 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2024-01-29 23:01:23,805 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 308 flow [2024-01-29 23:01:23,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:23,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:23,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:01:23,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 23:01:23,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 23:01:23,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1286629039, now seen corresponding path program 1 times [2024-01-29 23:01:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237843155] [2024-01-29 23:01:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:23,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237843155] [2024-01-29 23:01:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237843155] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:23,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:23,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 23:01:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63519501] [2024-01-29 23:01:23,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:23,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:01:23,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:01:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:01:23,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 131 [2024-01-29 23:01:23,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:23,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:23,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 131 [2024-01-29 23:01:23,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:31,502 INFO L124 PetriNetUnfolderBase]: 65253/125915 cut-off events. [2024-01-29 23:01:31,502 INFO L125 PetriNetUnfolderBase]: For 10499/12599 co-relation queries the response was YES. [2024-01-29 23:01:32,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231412 conditions, 125915 events. 65253/125915 cut-off events. For 10499/12599 co-relation queries the response was YES. Maximal size of possible extension queue 5472. Compared 1454534 event pairs, 23543 based on Foata normal form. 0/113910 useless extension candidates. Maximal degree in co-relation 231394. Up to 49075 conditions per place. [2024-01-29 23:01:32,853 INFO L140 encePairwiseOnDemand]: 104/131 looper letters, 82 selfloop transitions, 24 changer transitions 0/170 dead transitions. [2024-01-29 23:01:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 170 transitions, 648 flow [2024-01-29 23:01:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:01:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:01:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2024-01-29 23:01:32,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8269720101781171 [2024-01-29 23:01:32,856 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 308 flow. Second operand 3 states and 325 transitions. [2024-01-29 23:01:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 170 transitions, 648 flow [2024-01-29 23:01:32,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 170 transitions, 643 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:01:32,865 INFO L231 Difference]: Finished difference. Result has 128 places, 145 transitions, 521 flow [2024-01-29 23:01:32,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=521, PETRI_PLACES=128, PETRI_TRANSITIONS=145} [2024-01-29 23:01:32,866 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2024-01-29 23:01:32,866 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 145 transitions, 521 flow [2024-01-29 23:01:32,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:32,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:32,867 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-29 23:01:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 23:01:32,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 23:01:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1175646650, now seen corresponding path program 1 times [2024-01-29 23:01:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712049042] [2024-01-29 23:01:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 23:01:32,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 23:01:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 23:01:32,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 23:01:32,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 23:01:32,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-01-29 23:01:32,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-29 23:01:32,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (45 of 61 remaining) [2024-01-29 23:01:32,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-29 23:01:32,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-01-29 23:01:32,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-29 23:01:32,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-01-29 23:01:32,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-29 23:01:32,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (30 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 61 remaining) [2024-01-29 23:01:32,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-01-29 23:01:32,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-01-29 23:01:32,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-29 23:01:32,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-29 23:01:32,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-29 23:01:32,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-29 23:01:32,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (15 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-29 23:01:32,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-29 23:01:32,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-01-29 23:01:32,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 61 remaining) [2024-01-29 23:01:32,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-29 23:01:32,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONERROR_FUNCTION (0 of 61 remaining) [2024-01-29 23:01:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 23:01:32,907 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-29 23:01:32,908 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 23:01:32,908 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-29 23:01:32,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 23:01:32,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 173 transitions, 374 flow [2024-01-29 23:01:32,968 INFO L124 PetriNetUnfolderBase]: 8/184 cut-off events. [2024-01-29 23:01:32,968 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-29 23:01:32,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 184 events. 8/184 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 869 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 167. Up to 5 conditions per place. [2024-01-29 23:01:32,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 173 transitions, 374 flow [2024-01-29 23:01:32,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 173 transitions, 374 flow [2024-01-29 23:01:32,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 23:01:32,974 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;@21eface4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 23:01:32,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-01-29 23:01:32,975 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 23:01:32,975 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 23:01:32,975 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 23:01:32,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:01:32,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 23:01:32,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-29 23:01:32,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:01:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash 626072065, now seen corresponding path program 1 times [2024-01-29 23:01:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:01:32,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027521801] [2024-01-29 23:01:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:01:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:01:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:01:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:01:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:01:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027521801] [2024-01-29 23:01:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027521801] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:01:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:01:33,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:01:33,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230065057] [2024-01-29 23:01:33,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:01:33,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:01:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:01:33,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:01:33,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:01:33,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 173 [2024-01-29 23:01:33,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 173 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:01:33,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:01:33,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 173 [2024-01-29 23:01:33,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand