./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c --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/popl20-more-dec-subseq.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-dec-subseq.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:07:52,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:07:52,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:07:52,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:07:52,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:07:52,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:07:52,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:07:52,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:07:52,159 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:07:52,159 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:07:52,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:07:52,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:07:52,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:07:52,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:07:52,163 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:07:52,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:07:52,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:07:52,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:07:52,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:07:52,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:07:52,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:07:52,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:07:52,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:07:52,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:07:52,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:07:52,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:07:52,168 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:07:52,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:07:52,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:07:52,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:07:52,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:07:52,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:07:52,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:07:52,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:07:52,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:07:52,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:07:52,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:07:52,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:07:52,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:07:52,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:07:52,173 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:07:52,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:07:52,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:07:52,177 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:07:52,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:07:52,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:07:52,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:07:52,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:07:52,443 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:07:52,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2024-01-31 17:07:53,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:07:53,826 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:07:53,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2024-01-31 17:07:53,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de68ef21/88f21c1b2d064762b3da24ee1e67f57c/FLAGce33e2003 [2024-01-31 17:07:53,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de68ef21/88f21c1b2d064762b3da24ee1e67f57c [2024-01-31 17:07:53,851 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:07:53,851 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:07:53,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-dec-subseq.wvr.yml/witness.yml [2024-01-31 17:07:54,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:07:54,038 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:07:54,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:07:54,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:07:54,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:07:54,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:07:53" (1/2) ... [2024-01-31 17:07:54,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a771a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:07:54, skipping insertion in model container [2024-01-31 17:07:54,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:07:53" (1/2) ... [2024-01-31 17:07:54,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b0370d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:07:54, skipping insertion in model container [2024-01-31 17:07:54,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:07:54" (2/2) ... [2024-01-31 17:07:54,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a771a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54, skipping insertion in model container [2024-01-31 17:07:54,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:07:54" (2/2) ... [2024-01-31 17:07:54,050 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:07:54,121 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:07:54,123 INFO L98 nessWitnessExtractor]: Location invariant after [L67-L67] (0 <= i) && ((unsigned long )_argptr == 0UL) [2024-01-31 17:07:54,144 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:07:54,336 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-01-31 17:07:54,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:07:54,353 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:07:54,372 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:07:54,377 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-01-31 17:07:54,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:07:54,396 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:07:54,397 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54 WrapperNode [2024-01-31 17:07:54,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:07:54,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:07:54,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:07:54,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:07:54,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,443 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 199 [2024-01-31 17:07:54,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:07:54,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:07:54,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:07:54,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:07:54,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,526 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 8, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 2, 1]. [2024-01-31 17:07:54,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:07:54,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:07:54,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:07:54,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:07:54,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (1/1) ... [2024-01-31 17:07:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:07:54,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:07:54,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:07:54,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:07:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:07:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:07:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:07:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:07:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:07:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:07:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:07:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:07:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:07:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:07:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:07:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:07:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:07:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:07:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:07:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:07:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:07:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:07:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:07:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:07:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:07:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:07:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:07:54,694 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:07:54,827 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:07:54,829 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:07:55,113 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:07:55,113 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:07:55,370 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:07:55,370 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:07:55,371 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:07:55 BoogieIcfgContainer [2024-01-31 17:07:55,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:07:55,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:07:55,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:07:55,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:07:55,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:07:53" (1/4) ... [2024-01-31 17:07:55,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3400a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:07:55, skipping insertion in model container [2024-01-31 17:07:55,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:07:54" (2/4) ... [2024-01-31 17:07:55,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3400a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:07:55, skipping insertion in model container [2024-01-31 17:07:55,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:07:54" (3/4) ... [2024-01-31 17:07:55,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3400a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:07:55, skipping insertion in model container [2024-01-31 17:07:55,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:07:55" (4/4) ... [2024-01-31 17:07:55,378 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2024-01-31 17:07:55,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:07:55,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:07:55,394 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:07:55,428 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:07:55,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 32 transitions, 78 flow [2024-01-31 17:07:55,492 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-01-31 17:07:55,492 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:07:55,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 5/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-01-31 17:07:55,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 32 transitions, 78 flow [2024-01-31 17:07:55,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 29 transitions, 70 flow [2024-01-31 17:07:55,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:07:55,511 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;@1cd2d878, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:07:55,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:07:55,522 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:07:55,522 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-01-31 17:07:55,522 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:07:55,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:55,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:55,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:55,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash 547110899, now seen corresponding path program 1 times [2024-01-31 17:07:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:55,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663667051] [2024-01-31 17:07:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:07:55,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663667051] [2024-01-31 17:07:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663667051] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:07:55,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:07:55,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:07:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547844982] [2024-01-31 17:07:55,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:07:55,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:07:55,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:07:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:07:55,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:07:55,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:55,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:55,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:07:55,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:56,189 INFO L124 PetriNetUnfolderBase]: 207/354 cut-off events. [2024-01-31 17:07:56,189 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-31 17:07:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 354 events. 207/354 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1421 event pairs, 51 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 651. Up to 197 conditions per place. [2024-01-31 17:07:56,197 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 32 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-01-31 17:07:56,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 167 flow [2024-01-31 17:07:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:07:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:07:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-01-31 17:07:56,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-01-31 17:07:56,211 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 70 flow. Second operand 4 states and 68 transitions. [2024-01-31 17:07:56,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 167 flow [2024-01-31 17:07:56,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 157 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:07:56,219 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 76 flow [2024-01-31 17:07:56,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2024-01-31 17:07:56,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-01-31 17:07:56,226 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 76 flow [2024-01-31 17:07:56,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:56,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:56,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:56,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:07:56,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:56,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1937993546, now seen corresponding path program 1 times [2024-01-31 17:07:56,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:56,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969163288] [2024-01-31 17:07:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:56,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:07:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969163288] [2024-01-31 17:07:56,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969163288] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:07:56,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:07:56,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:07:56,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058066424] [2024-01-31 17:07:56,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:07:56,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:07:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:07:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:07:56,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:07:56,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:56,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:56,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:07:56,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:56,554 INFO L124 PetriNetUnfolderBase]: 207/379 cut-off events. [2024-01-31 17:07:56,554 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-31 17:07:56,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 379 events. 207/379 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1637 event pairs, 129 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 285. Up to 329 conditions per place. [2024-01-31 17:07:56,559 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 23 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-01-31 17:07:56,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 128 flow [2024-01-31 17:07:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:07:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:07:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-01-31 17:07:56,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-01-31 17:07:56,565 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 76 flow. Second operand 3 states and 49 transitions. [2024-01-31 17:07:56,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 128 flow [2024-01-31 17:07:56,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:07:56,570 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 84 flow [2024-01-31 17:07:56,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-01-31 17:07:56,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-01-31 17:07:56,577 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 84 flow [2024-01-31 17:07:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:56,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:56,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:56,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:07:56,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:56,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash 855847812, now seen corresponding path program 1 times [2024-01-31 17:07:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:56,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193574167] [2024-01-31 17:07:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:56,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:07:56,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193574167] [2024-01-31 17:07:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193574167] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:07:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:07:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:07:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252308085] [2024-01-31 17:07:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:07:56,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:07:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:07:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:07:56,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:07:56,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:56,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:56,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:07:56,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:56,806 INFO L124 PetriNetUnfolderBase]: 263/492 cut-off events. [2024-01-31 17:07:56,807 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-31 17:07:56,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 492 events. 263/492 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2204 event pairs, 96 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 977. Up to 221 conditions per place. [2024-01-31 17:07:56,810 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 36 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2024-01-31 17:07:56,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 202 flow [2024-01-31 17:07:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:07:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:07:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-01-31 17:07:56,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-01-31 17:07:56,814 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 84 flow. Second operand 3 states and 62 transitions. [2024-01-31 17:07:56,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 202 flow [2024-01-31 17:07:56,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:07:56,817 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 92 flow [2024-01-31 17:07:56,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-01-31 17:07:56,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-01-31 17:07:56,819 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 92 flow [2024-01-31 17:07:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:56,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:56,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:56,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:07:56,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:56,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash 165802299, now seen corresponding path program 1 times [2024-01-31 17:07:56,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:56,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564913298] [2024-01-31 17:07:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:56,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:07:56,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564913298] [2024-01-31 17:07:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564913298] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:07:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:07:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:07:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284212917] [2024-01-31 17:07:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:07:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:07:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:56,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:07:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:07:56,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:07:56,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:56,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:56,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:07:56,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:57,024 INFO L124 PetriNetUnfolderBase]: 257/487 cut-off events. [2024-01-31 17:07:57,024 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-31 17:07:57,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 487 events. 257/487 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2171 event pairs, 107 based on Foata normal form. 10/460 useless extension candidates. Maximal degree in co-relation 1055. Up to 326 conditions per place. [2024-01-31 17:07:57,027 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 33 selfloop transitions, 2 changer transitions 5/46 dead transitions. [2024-01-31 17:07:57,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 209 flow [2024-01-31 17:07:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:07:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:07:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-01-31 17:07:57,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-01-31 17:07:57,029 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 92 flow. Second operand 3 states and 61 transitions. [2024-01-31 17:07:57,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 209 flow [2024-01-31 17:07:57,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:07:57,031 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 102 flow [2024-01-31 17:07:57,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-01-31 17:07:57,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-01-31 17:07:57,032 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 102 flow [2024-01-31 17:07:57,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:57,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:57,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:57,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:07:57,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:57,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash -989663438, now seen corresponding path program 1 times [2024-01-31 17:07:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723366272] [2024-01-31 17:07:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:07:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723366272] [2024-01-31 17:07:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723366272] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:07:57,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:07:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:07:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361071882] [2024-01-31 17:07:57,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:07:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:07:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:07:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:07:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:07:57,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:07:57,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:57,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:07:57,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:07:57,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:07:57,276 INFO L124 PetriNetUnfolderBase]: 315/619 cut-off events. [2024-01-31 17:07:57,279 INFO L125 PetriNetUnfolderBase]: For 80/87 co-relation queries the response was YES. [2024-01-31 17:07:57,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 619 events. 315/619 cut-off events. For 80/87 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2986 event pairs, 254 based on Foata normal form. 12/582 useless extension candidates. Maximal degree in co-relation 1115. Up to 448 conditions per place. [2024-01-31 17:07:57,282 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 26 selfloop transitions, 2 changer transitions 18/52 dead transitions. [2024-01-31 17:07:57,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 250 flow [2024-01-31 17:07:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:07:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:07:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-01-31 17:07:57,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-01-31 17:07:57,287 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 102 flow. Second operand 4 states and 73 transitions. [2024-01-31 17:07:57,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 250 flow [2024-01-31 17:07:57,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:07:57,290 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 114 flow [2024-01-31 17:07:57,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-01-31 17:07:57,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-01-31 17:07:57,293 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 114 flow [2024-01-31 17:07:57,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:07:57,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:07:57,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:07:57,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:07:57,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:07:57,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:07:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash 481046099, now seen corresponding path program 1 times [2024-01-31 17:07:57,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:07:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171913828] [2024-01-31 17:07:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:07:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:07:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:07:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171913828] [2024-01-31 17:07:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171913828] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:07:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932497332] [2024-01-31 17:07:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:07:58,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:07:58,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:07:58,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:07:58,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:07:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:07:58,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 34 conjunts are in the unsatisfiable core [2024-01-31 17:07:58,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:07:58,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-01-31 17:07:58,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:07:58,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-01-31 17:07:58,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:07:58,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-01-31 17:07:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:07:58,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-01-31 17:07:58,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:07:58,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-01-31 17:07:58,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:07:58,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-01-31 17:07:58,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-31 17:07:58,663 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-01-31 17:07:58,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-01-31 17:07:58,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-31 17:07:59,189 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-01-31 17:07:59,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2024-01-31 17:07:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:07:59,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:00,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:00,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 39 [2024-01-31 17:08:00,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:00,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 90 [2024-01-31 17:08:00,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:00,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 63 [2024-01-31 17:08:00,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:00,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 66 [2024-01-31 17:08:00,371 INFO L349 Elim1Store]: treesize reduction 9, result has 80.9 percent of original size [2024-01-31 17:08:00,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 181 [2024-01-31 17:08:00,388 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:00,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:00,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 120 [2024-01-31 17:08:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:08:00,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932497332] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:00,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:00,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 33 [2024-01-31 17:08:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160844188] [2024-01-31 17:08:00,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:00,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-01-31 17:08:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-01-31 17:08:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=893, Unknown=2, NotChecked=0, Total=1122 [2024-01-31 17:08:00,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:08:00,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 114 flow. Second operand has 34 states, 34 states have (on average 7.205882352941177) internal successors, (245), 34 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:00,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:00,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:08:00,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:09,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:08:13,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:08:17,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:08:24,083 INFO L124 PetriNetUnfolderBase]: 1827/3130 cut-off events. [2024-01-31 17:08:24,084 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-01-31 17:08:24,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7373 conditions, 3130 events. 1827/3130 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 16356 event pairs, 309 based on Foata normal form. 6/2740 useless extension candidates. Maximal degree in co-relation 7355. Up to 512 conditions per place. [2024-01-31 17:08:24,099 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 237 selfloop transitions, 87 changer transitions 101/428 dead transitions. [2024-01-31 17:08:24,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 428 transitions, 2077 flow [2024-01-31 17:08:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-01-31 17:08:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-01-31 17:08:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 662 transitions. [2024-01-31 17:08:24,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056372549019608 [2024-01-31 17:08:24,104 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 114 flow. Second operand 51 states and 662 transitions. [2024-01-31 17:08:24,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 428 transitions, 2077 flow [2024-01-31 17:08:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 428 transitions, 2063 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-31 17:08:24,147 INFO L231 Difference]: Finished difference. Result has 115 places, 121 transitions, 818 flow [2024-01-31 17:08:24,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=818, PETRI_PLACES=115, PETRI_TRANSITIONS=121} [2024-01-31 17:08:24,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-01-31 17:08:24,148 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 818 flow [2024-01-31 17:08:24,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.205882352941177) internal successors, (245), 34 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:24,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:24,148 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:24,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 17:08:24,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-31 17:08:24,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:24,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -276766126, now seen corresponding path program 2 times [2024-01-31 17:08:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026304143] [2024-01-31 17:08:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:08:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:24,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026304143] [2024-01-31 17:08:24,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026304143] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:24,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736735687] [2024-01-31 17:08:24,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:08:24,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:24,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:24,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:24,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:08:24,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:08:24,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:08:24,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:08:24,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:08:24,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:08:24,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736735687] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:24,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-01-31 17:08:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919423328] [2024-01-31 17:08:24,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:24,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 17:08:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 17:08:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-01-31 17:08:24,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:08:24,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 818 flow. Second operand has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 15 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:24,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:24,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:08:24,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:25,377 INFO L124 PetriNetUnfolderBase]: 1284/2363 cut-off events. [2024-01-31 17:08:25,377 INFO L125 PetriNetUnfolderBase]: For 10101/10171 co-relation queries the response was YES. [2024-01-31 17:08:25,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10386 conditions, 2363 events. 1284/2363 cut-off events. For 10101/10171 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13355 event pairs, 192 based on Foata normal form. 41/2234 useless extension candidates. Maximal degree in co-relation 10330. Up to 693 conditions per place. [2024-01-31 17:08:25,399 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 216 selfloop transitions, 48 changer transitions 0/273 dead transitions. [2024-01-31 17:08:25,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 273 transitions, 2375 flow [2024-01-31 17:08:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:08:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:08:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-01-31 17:08:25,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-01-31 17:08:25,401 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 818 flow. Second operand 10 states and 150 transitions. [2024-01-31 17:08:25,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 273 transitions, 2375 flow [2024-01-31 17:08:25,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 273 transitions, 2087 flow, removed 132 selfloop flow, removed 11 redundant places. [2024-01-31 17:08:25,465 INFO L231 Difference]: Finished difference. Result has 106 places, 140 transitions, 980 flow [2024-01-31 17:08:25,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=980, PETRI_PLACES=106, PETRI_TRANSITIONS=140} [2024-01-31 17:08:25,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-01-31 17:08:25,466 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 140 transitions, 980 flow [2024-01-31 17:08:25,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 15 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:25,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:25,467 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:25,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-31 17:08:25,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-31 17:08:25,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:25,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash -53026424, now seen corresponding path program 3 times [2024-01-31 17:08:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608087130] [2024-01-31 17:08:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:25,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-01-31 17:08:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608087130] [2024-01-31 17:08:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608087130] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968400351] [2024-01-31 17:08:25,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:08:25,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:25,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:25,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:25,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:08:25,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:08:25,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:08:25,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 17:08:25,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-01-31 17:08:25,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-01-31 17:08:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968400351] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:26,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2024-01-31 17:08:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67481549] [2024-01-31 17:08:26,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:26,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:08:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:08:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:08:26,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:08:26,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 140 transitions, 980 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:26,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:26,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:08:26,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:26,890 INFO L124 PetriNetUnfolderBase]: 3655/6144 cut-off events. [2024-01-31 17:08:26,890 INFO L125 PetriNetUnfolderBase]: For 26624/26624 co-relation queries the response was YES. [2024-01-31 17:08:26,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24612 conditions, 6144 events. 3655/6144 cut-off events. For 26624/26624 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 35961 event pairs, 232 based on Foata normal form. 32/5900 useless extension candidates. Maximal degree in co-relation 20873. Up to 2088 conditions per place. [2024-01-31 17:08:26,954 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 248 selfloop transitions, 89 changer transitions 0/340 dead transitions. [2024-01-31 17:08:26,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 340 transitions, 2973 flow [2024-01-31 17:08:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:08:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:08:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-01-31 17:08:26,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-01-31 17:08:26,955 INFO L175 Difference]: Start difference. First operand has 106 places, 140 transitions, 980 flow. Second operand 8 states and 114 transitions. [2024-01-31 17:08:26,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 340 transitions, 2973 flow [2024-01-31 17:08:27,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 340 transitions, 2870 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-01-31 17:08:27,155 INFO L231 Difference]: Finished difference. Result has 114 places, 194 transitions, 1740 flow [2024-01-31 17:08:27,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1740, PETRI_PLACES=114, PETRI_TRANSITIONS=194} [2024-01-31 17:08:27,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-01-31 17:08:27,156 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 194 transitions, 1740 flow [2024-01-31 17:08:27,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:27,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:27,157 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:27,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:08:27,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:27,371 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:27,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1299043474, now seen corresponding path program 4 times [2024-01-31 17:08:27,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:27,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599630838] [2024-01-31 17:08:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:27,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:08:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599630838] [2024-01-31 17:08:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599630838] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338023268] [2024-01-31 17:08:29,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:08:29,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:29,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:29,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:29,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:08:29,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:08:29,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:08:29,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 32 conjunts are in the unsatisfiable core [2024-01-31 17:08:29,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:30,103 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-01-31 17:08:30,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2024-01-31 17:08:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:08:30,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:30,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:30,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 176 [2024-01-31 17:08:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-01-31 17:08:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338023268] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:31,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:31,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 29 [2024-01-31 17:08:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216170772] [2024-01-31 17:08:31,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:31,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-01-31 17:08:31,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-01-31 17:08:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-01-31 17:08:31,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:08:31,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 194 transitions, 1740 flow. Second operand has 30 states, 30 states have (on average 7.7) internal successors, (231), 30 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:31,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:31,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:08:31,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:34,356 INFO L124 PetriNetUnfolderBase]: 6496/10870 cut-off events. [2024-01-31 17:08:34,356 INFO L125 PetriNetUnfolderBase]: For 57792/57792 co-relation queries the response was YES. [2024-01-31 17:08:34,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49206 conditions, 10870 events. 6496/10870 cut-off events. For 57792/57792 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 68381 event pairs, 531 based on Foata normal form. 3/10339 useless extension candidates. Maximal degree in co-relation 39355. Up to 2745 conditions per place. [2024-01-31 17:08:34,442 INFO L140 encePairwiseOnDemand]: 17/32 looper letters, 460 selfloop transitions, 138 changer transitions 23/624 dead transitions. [2024-01-31 17:08:34,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 624 transitions, 7409 flow [2024-01-31 17:08:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-01-31 17:08:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-01-31 17:08:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 387 transitions. [2024-01-31 17:08:34,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901209677419355 [2024-01-31 17:08:34,445 INFO L175 Difference]: Start difference. First operand has 114 places, 194 transitions, 1740 flow. Second operand 31 states and 387 transitions. [2024-01-31 17:08:34,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 624 transitions, 7409 flow [2024-01-31 17:08:34,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 624 transitions, 7085 flow, removed 162 selfloop flow, removed 0 redundant places. [2024-01-31 17:08:34,772 INFO L231 Difference]: Finished difference. Result has 159 places, 282 transitions, 3021 flow [2024-01-31 17:08:34,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3021, PETRI_PLACES=159, PETRI_TRANSITIONS=282} [2024-01-31 17:08:34,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-01-31 17:08:34,774 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 282 transitions, 3021 flow [2024-01-31 17:08:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.7) internal successors, (231), 30 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:34,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:34,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:34,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:08:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:34,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:34,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -484360406, now seen corresponding path program 5 times [2024-01-31 17:08:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:34,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387812098] [2024-01-31 17:08:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:08:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387812098] [2024-01-31 17:08:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387812098] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561042306] [2024-01-31 17:08:35,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:08:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:35,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:35,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:08:35,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 17:08:35,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:08:35,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 17:08:35,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:08:35,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:08:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561042306] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:35,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:35,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2024-01-31 17:08:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968640074] [2024-01-31 17:08:35,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:35,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:08:35,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:35,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:08:35,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:08:35,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:08:35,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 282 transitions, 3021 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:35,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:35,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:08:35,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:37,250 INFO L124 PetriNetUnfolderBase]: 6483/11847 cut-off events. [2024-01-31 17:08:37,250 INFO L125 PetriNetUnfolderBase]: For 91760/92219 co-relation queries the response was YES. [2024-01-31 17:08:37,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60087 conditions, 11847 events. 6483/11847 cut-off events. For 91760/92219 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 84869 event pairs, 1067 based on Foata normal form. 206/11913 useless extension candidates. Maximal degree in co-relation 59998. Up to 4714 conditions per place. [2024-01-31 17:08:37,368 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 340 selfloop transitions, 62 changer transitions 0/426 dead transitions. [2024-01-31 17:08:37,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 426 transitions, 5241 flow [2024-01-31 17:08:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:08:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:08:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-01-31 17:08:37,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2024-01-31 17:08:37,370 INFO L175 Difference]: Start difference. First operand has 159 places, 282 transitions, 3021 flow. Second operand 4 states and 89 transitions. [2024-01-31 17:08:37,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 426 transitions, 5241 flow [2024-01-31 17:08:37,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 426 transitions, 5011 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-01-31 17:08:37,937 INFO L231 Difference]: Finished difference. Result has 155 places, 326 transitions, 3471 flow [2024-01-31 17:08:37,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3471, PETRI_PLACES=155, PETRI_TRANSITIONS=326} [2024-01-31 17:08:37,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-01-31 17:08:37,939 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 326 transitions, 3471 flow [2024-01-31 17:08:37,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:37,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:37,940 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:37,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:08:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-31 17:08:38,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:38,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash 114233426, now seen corresponding path program 1 times [2024-01-31 17:08:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:38,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071616720] [2024-01-31 17:08:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:38,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-01-31 17:08:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071616720] [2024-01-31 17:08:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071616720] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107676333] [2024-01-31 17:08:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:38,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:38,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:38,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 17:08:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:38,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:08:38,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-01-31 17:08:38,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-01-31 17:08:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107676333] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:38,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:38,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-01-31 17:08:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450471816] [2024-01-31 17:08:38,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:38,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 17:08:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 17:08:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-01-31 17:08:38,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:08:38,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 326 transitions, 3471 flow. Second operand has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:38,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:38,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:08:38,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:40,433 INFO L124 PetriNetUnfolderBase]: 5736/10698 cut-off events. [2024-01-31 17:08:40,433 INFO L125 PetriNetUnfolderBase]: For 89106/89664 co-relation queries the response was YES. [2024-01-31 17:08:40,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55874 conditions, 10698 events. 5736/10698 cut-off events. For 89106/89664 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 76563 event pairs, 721 based on Foata normal form. 257/10837 useless extension candidates. Maximal degree in co-relation 46437. Up to 6819 conditions per place. [2024-01-31 17:08:40,645 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 296 selfloop transitions, 31 changer transitions 79/430 dead transitions. [2024-01-31 17:08:40,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 430 transitions, 5228 flow [2024-01-31 17:08:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:08:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:08:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-01-31 17:08:40,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-01-31 17:08:40,648 INFO L175 Difference]: Start difference. First operand has 155 places, 326 transitions, 3471 flow. Second operand 9 states and 136 transitions. [2024-01-31 17:08:40,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 430 transitions, 5228 flow [2024-01-31 17:08:41,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 430 transitions, 5188 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-01-31 17:08:41,031 INFO L231 Difference]: Finished difference. Result has 164 places, 278 transitions, 2954 flow [2024-01-31 17:08:41,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2954, PETRI_PLACES=164, PETRI_TRANSITIONS=278} [2024-01-31 17:08:41,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-01-31 17:08:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 278 transitions, 2954 flow [2024-01-31 17:08:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:41,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:41,032 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:41,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:08:41,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:41,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:41,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1671099878, now seen corresponding path program 2 times [2024-01-31 17:08:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:41,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5396213] [2024-01-31 17:08:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:41,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-01-31 17:08:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5396213] [2024-01-31 17:08:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5396213] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:08:41,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:08:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:08:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035343918] [2024-01-31 17:08:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:08:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:08:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:08:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:08:41,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:08:41,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 278 transitions, 2954 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:41,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:41,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:08:41,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:42,970 INFO L124 PetriNetUnfolderBase]: 4143/7497 cut-off events. [2024-01-31 17:08:42,970 INFO L125 PetriNetUnfolderBase]: For 62012/62199 co-relation queries the response was YES. [2024-01-31 17:08:42,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39674 conditions, 7497 events. 4143/7497 cut-off events. For 62012/62199 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 47933 event pairs, 614 based on Foata normal form. 45/7471 useless extension candidates. Maximal degree in co-relation 35323. Up to 6496 conditions per place. [2024-01-31 17:08:43,028 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 201 selfloop transitions, 30 changer transitions 0/251 dead transitions. [2024-01-31 17:08:43,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 251 transitions, 2984 flow [2024-01-31 17:08:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:08:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:08:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-01-31 17:08:43,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-01-31 17:08:43,030 INFO L175 Difference]: Start difference. First operand has 164 places, 278 transitions, 2954 flow. Second operand 6 states and 88 transitions. [2024-01-31 17:08:43,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 251 transitions, 2984 flow [2024-01-31 17:08:43,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 251 transitions, 2819 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-01-31 17:08:43,198 INFO L231 Difference]: Finished difference. Result has 148 places, 238 transitions, 2387 flow [2024-01-31 17:08:43,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2387, PETRI_PLACES=148, PETRI_TRANSITIONS=238} [2024-01-31 17:08:43,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-01-31 17:08:43,199 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 238 transitions, 2387 flow [2024-01-31 17:08:43,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:43,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:43,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:43,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:08:43,200 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:43,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1047151260, now seen corresponding path program 6 times [2024-01-31 17:08:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472125291] [2024-01-31 17:08:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:08:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472125291] [2024-01-31 17:08:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472125291] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807733300] [2024-01-31 17:08:43,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:08:43,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:43,357 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:43,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 17:08:43,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 17:08:43,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:08:43,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:08:43,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:08:43,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:08:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807733300] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:08:43,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:08:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-01-31 17:08:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228121894] [2024-01-31 17:08:43,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:08:43,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:08:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:08:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:08:43,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:08:43,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:08:43,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 238 transitions, 2387 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:43,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:08:43,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:08:43,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:08:44,665 INFO L124 PetriNetUnfolderBase]: 2331/4349 cut-off events. [2024-01-31 17:08:44,666 INFO L125 PetriNetUnfolderBase]: For 34160/34276 co-relation queries the response was YES. [2024-01-31 17:08:44,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21987 conditions, 4349 events. 2331/4349 cut-off events. For 34160/34276 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 26384 event pairs, 1100 based on Foata normal form. 73/4357 useless extension candidates. Maximal degree in co-relation 19517. Up to 3104 conditions per place. [2024-01-31 17:08:44,724 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 92 selfloop transitions, 3 changer transitions 65/176 dead transitions. [2024-01-31 17:08:44,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 176 transitions, 2083 flow [2024-01-31 17:08:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:08:44,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:08:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-01-31 17:08:44,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-01-31 17:08:44,725 INFO L175 Difference]: Start difference. First operand has 148 places, 238 transitions, 2387 flow. Second operand 6 states and 97 transitions. [2024-01-31 17:08:44,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 176 transitions, 2083 flow [2024-01-31 17:08:44,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 176 transitions, 1855 flow, removed 87 selfloop flow, removed 11 redundant places. [2024-01-31 17:08:44,840 INFO L231 Difference]: Finished difference. Result has 132 places, 111 transitions, 932 flow [2024-01-31 17:08:44,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=132, PETRI_TRANSITIONS=111} [2024-01-31 17:08:44,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-01-31 17:08:44,841 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 111 transitions, 932 flow [2024-01-31 17:08:44,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:08:44,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:08:44,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:08:44,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 17:08:45,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:45,044 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:08:45,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:08:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1695118801, now seen corresponding path program 7 times [2024-01-31 17:08:45,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:08:45,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177852195] [2024-01-31 17:08:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:08:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:08:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:08:46,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:08:46,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177852195] [2024-01-31 17:08:46,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177852195] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:08:46,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683227207] [2024-01-31 17:08:46,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:08:46,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:08:46,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:08:46,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:08:46,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 17:08:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:08:47,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 50 conjunts are in the unsatisfiable core [2024-01-31 17:08:47,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:08:47,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-01-31 17:08:47,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:08:47,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-01-31 17:08:47,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:08:47,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-01-31 17:08:47,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:08:47,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-01-31 17:08:47,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:08:47,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-01-31 17:08:47,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-01-31 17:08:47,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-01-31 17:08:47,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-31 17:08:47,213 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-01-31 17:08:47,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-01-31 17:08:47,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-31 17:08:47,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-31 17:08:48,473 INFO L349 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2024-01-31 17:08:48,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 68 [2024-01-31 17:08:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:08:48,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:08:55,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:55,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 117 [2024-01-31 17:08:56,013 INFO L349 Elim1Store]: treesize reduction 29, result has 80.3 percent of original size [2024-01-31 17:08:56,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 353 treesize of output 358 [2024-01-31 17:08:56,060 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:56,061 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:56,062 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:56,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:56,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 227 treesize of output 247 [2024-01-31 17:08:57,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:57,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 90 [2024-01-31 17:08:57,890 INFO L349 Elim1Store]: treesize reduction 8, result has 91.4 percent of original size [2024-01-31 17:08:57,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 252 [2024-01-31 17:08:57,914 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:57,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:57,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 162 treesize of output 174 [2024-01-31 17:08:58,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:58,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 118 [2024-01-31 17:08:58,914 INFO L349 Elim1Store]: treesize reduction 16, result has 92.3 percent of original size [2024-01-31 17:08:58,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 297 treesize of output 390 [2024-01-31 17:08:58,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:58,955 INFO L173 IndexEqualityManager]: detected equality via solver [2024-01-31 17:08:59,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:08:59,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 182 treesize of output 275 [2024-01-31 17:09:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:09:17,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683227207] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:09:17,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:09:17,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 55 [2024-01-31 17:09:17,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176185565] [2024-01-31 17:09:17,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:09:17,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-01-31 17:09:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:09:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-01-31 17:09:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2593, Unknown=9, NotChecked=0, Total=3080 [2024-01-31 17:09:17,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:09:17,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 111 transitions, 932 flow. Second operand has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 56 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:09:17,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:09:17,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:09:17,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:09:32,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:11:13,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:11:54,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:11:58,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:02,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:31,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:35,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:46,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:50,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:54,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:12:58,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:13:37,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:14:07,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:14:47,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:16:22,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:16:55,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:17:09,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:17:14,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:17:24,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:18:42,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:18:48,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:18:53,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:18:59,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:19:16,000 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-01-31 17:19:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 358 states. [2024-01-31 17:19:16,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-01-31 17:19:16,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-01-31 17:19:16,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-31 17:19:16,202 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.NestedWordAutomataUtils.getSuccessorState(NestedWordAutomataUtils.java:482) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getOrConstructTransition(DifferencePetriNet.java:279) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getTransitions(DifferencePetriNet.java:261) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.addFullyInstantiatedCandidate(PossibleExtensions.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:195) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.update(PossibleExtensions.java:135) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.computeUnfoldingHelper(PetriNetUnfolderBase.java:226) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.computeUnfolding(PetriNetUnfolderBase.java:183) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.(PetriNetUnfolderBase.java:123) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.(PetriNetUnfolder.java:72) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:76) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:64) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePairwiseOnDemand.(DifferencePairwiseOnDemand.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:481) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 53 more [2024-01-31 17:19:16,209 INFO L158 Benchmark]: Toolchain (without parser) took 682171.29ms. Allocated memory was 138.4MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 78.7MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-01-31 17:19:16,209 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:19:16,209 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:19:16,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.59ms. Allocated memory is still 138.4MB. Free memory was 78.7MB in the beginning and 61.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-01-31 17:19:16,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.68ms. Allocated memory is still 138.4MB. Free memory was 61.5MB in the beginning and 59.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:19:16,210 INFO L158 Benchmark]: Boogie Preprocessor took 115.26ms. Allocated memory is still 138.4MB. Free memory was 59.1MB in the beginning and 109.3MB in the end (delta: -50.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-01-31 17:19:16,210 INFO L158 Benchmark]: RCFGBuilder took 806.35ms. Allocated memory was 138.4MB in the beginning and 199.2MB in the end (delta: 60.8MB). Free memory was 109.2MB in the beginning and 109.8MB in the end (delta: -565.0kB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2024-01-31 17:19:16,210 INFO L158 Benchmark]: TraceAbstraction took 680836.14ms. Allocated memory was 199.2MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 108.7MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-01-31 17:19:16,212 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.59ms. Allocated memory is still 138.4MB. Free memory was 78.7MB in the beginning and 61.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.68ms. Allocated memory is still 138.4MB. Free memory was 61.5MB in the beginning and 59.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 115.26ms. Allocated memory is still 138.4MB. Free memory was 59.1MB in the beginning and 109.3MB in the end (delta: -50.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * RCFGBuilder took 806.35ms. Allocated memory was 138.4MB in the beginning and 199.2MB in the end (delta: 60.8MB). Free memory was 109.2MB in the beginning and 109.8MB in the end (delta: -565.0kB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * TraceAbstraction took 680836.14ms. Allocated memory was 199.2MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 108.7MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/weaver/popl20-more-dec-subseq.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-dec-subseq.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:19:18,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:19:18,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-31 17:19:18,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:19:18,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:19:18,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:19:18,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:19:18,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:19:18,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:19:18,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:19:18,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:19:18,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:19:18,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:19:18,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:19:18,730 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:19:18,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:19:18,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:19:18,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:19:18,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:19:18,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:19:18,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:19:18,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:19:18,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:19:18,733 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-31 17:19:18,734 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-31 17:19:18,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:19:18,734 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-31 17:19:18,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:19:18,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:19:18,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:19:18,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:19:18,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:19:18,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:19:18,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:19:18,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:19:18,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:19:18,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:19:18,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:19:18,739 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-31 17:19:18,739 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-31 17:19:18,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:19:18,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:19:18,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:19:18,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:19:18,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:19:18,741 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-31 17:19:18,741 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:19:19,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:19:19,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:19:19,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:19:19,106 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:19:19,107 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:19:19,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2024-01-31 17:19:20,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:19:20,638 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:19:20,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2024-01-31 17:19:20,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfd37514/a545e5134801480ba34bb31949f72e86/FLAGc343f7832 [2024-01-31 17:19:20,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfd37514/a545e5134801480ba34bb31949f72e86 [2024-01-31 17:19:20,665 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:19:20,669 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:19:20,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-dec-subseq.wvr.yml/witness.yml [2024-01-31 17:19:20,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:19:20,863 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:19:20,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:19:20,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:19:20,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:19:20,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:19:20" (1/2) ... [2024-01-31 17:19:20,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683c95cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:19:20, skipping insertion in model container [2024-01-31 17:19:20,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:19:20" (1/2) ... [2024-01-31 17:19:20,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@653553ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:19:20, skipping insertion in model container [2024-01-31 17:19:20,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:20" (2/2) ... [2024-01-31 17:19:20,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683c95cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:20, skipping insertion in model container [2024-01-31 17:19:20,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:20" (2/2) ... [2024-01-31 17:19:20,874 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:19:20,944 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:19:20,946 INFO L98 nessWitnessExtractor]: Location invariant after [L67-L67] (0 <= i) && ((unsigned long )_argptr == 0UL) [2024-01-31 17:19:20,974 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:19:21,178 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-01-31 17:19:21,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:19:21,210 INFO L201 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-01-31 17:19:21,218 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:19:21,243 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-01-31 17:19:21,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:19:21,252 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:19:21,276 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:19:21,295 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-01-31 17:19:21,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:19:21,319 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:19:21,321 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21 WrapperNode [2024-01-31 17:19:21,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:19:21,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:19:21,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:19:21,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:19:21,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,367 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 194 [2024-01-31 17:19:21,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:19:21,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:19:21,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:19:21,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:19:21,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,401 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 8, 2, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 2, 1, 1]. [2024-01-31 17:19:21,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:19:21,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:19:21,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:19:21,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:19:21,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (1/1) ... [2024-01-31 17:19:21,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:19:21,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:19:21,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:19:21,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:19:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:19:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-31 17:19:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-31 17:19:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-31 17:19:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-01-31 17:19:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:19:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-01-31 17:19:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-01-31 17:19:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-01-31 17:19:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-01-31 17:19:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:19:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:19:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:19:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:19:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:19:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:19:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:19:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:19:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:19:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:19:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-31 17:19:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-31 17:19:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-31 17:19:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-01-31 17:19:21,502 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:19:21,666 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:19:21,669 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:19:22,096 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:19:22,097 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:19:22,334 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:19:22,334 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:19:22,334 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:19:22 BoogieIcfgContainer [2024-01-31 17:19:22,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:19:22,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:19:22,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:19:22,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:19:22,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:19:20" (1/4) ... [2024-01-31 17:19:22,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cad0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:19:22, skipping insertion in model container [2024-01-31 17:19:22,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:20" (2/4) ... [2024-01-31 17:19:22,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cad0d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:19:22, skipping insertion in model container [2024-01-31 17:19:22,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:19:21" (3/4) ... [2024-01-31 17:19:22,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cad0d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:19:22, skipping insertion in model container [2024-01-31 17:19:22,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:19:22" (4/4) ... [2024-01-31 17:19:22,341 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2024-01-31 17:19:22,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:19:22,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:19:22,357 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:19:22,412 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:19:22,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 32 transitions, 78 flow [2024-01-31 17:19:22,481 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-01-31 17:19:22,481 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:19:22,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 5/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-01-31 17:19:22,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 32 transitions, 78 flow [2024-01-31 17:19:22,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 29 transitions, 70 flow [2024-01-31 17:19:22,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:19:22,511 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;@7c0bd10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:19:22,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:19:22,529 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:19:22,529 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-01-31 17:19:22,529 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:19:22,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:22,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:22,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:22,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash -552187415, now seen corresponding path program 1 times [2024-01-31 17:19:22,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:22,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331697678] [2024-01-31 17:19:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:22,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:22,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:22,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-01-31 17:19:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:22,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-31 17:19:22,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:19:22,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:19:22,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331697678] [2024-01-31 17:19:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331697678] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:22,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:22,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:19:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768232466] [2024-01-31 17:19:22,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:19:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:19:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:19:22,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:19:22,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:22,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:22,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:19:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:22,953 INFO L124 PetriNetUnfolderBase]: 181/339 cut-off events. [2024-01-31 17:19:22,953 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-31 17:19:22,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 339 events. 181/339 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1384 event pairs, 59 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 578. Up to 149 conditions per place. [2024-01-31 17:19:22,958 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 33 selfloop transitions, 2 changer transitions 2/43 dead transitions. [2024-01-31 17:19:22,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 178 flow [2024-01-31 17:19:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:19:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:19:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-01-31 17:19:22,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-01-31 17:19:22,969 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 70 flow. Second operand 3 states and 62 transitions. [2024-01-31 17:19:22,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 178 flow [2024-01-31 17:19:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:19:22,975 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 74 flow [2024-01-31 17:19:22,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2024-01-31 17:19:22,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2024-01-31 17:19:22,979 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 74 flow [2024-01-31 17:19:22,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:22,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:22,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:22,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-01-31 17:19:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:23,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:23,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash -889919438, now seen corresponding path program 1 times [2024-01-31 17:19:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:23,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089982428] [2024-01-31 17:19:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:23,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:23,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:23,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:23,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-01-31 17:19:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:23,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 17:19:23,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:19:23,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:19:23,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089982428] [2024-01-31 17:19:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089982428] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:23,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:23,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:19:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707751899] [2024-01-31 17:19:23,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:23,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:19:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:19:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:19:23,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:19:23,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:23,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:23,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:19:23,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:23,838 INFO L124 PetriNetUnfolderBase]: 336/570 cut-off events. [2024-01-31 17:19:23,838 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-31 17:19:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 570 events. 336/570 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2049 event pairs, 97 based on Foata normal form. 14/465 useless extension candidates. Maximal degree in co-relation 754. Up to 323 conditions per place. [2024-01-31 17:19:23,843 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 3 changer transitions 22/72 dead transitions. [2024-01-31 17:19:23,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 72 transitions, 302 flow [2024-01-31 17:19:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:19:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:19:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-01-31 17:19:23,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-01-31 17:19:23,845 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 74 flow. Second operand 7 states and 106 transitions. [2024-01-31 17:19:23,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 72 transitions, 302 flow [2024-01-31 17:19:23,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 72 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:19:23,847 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 98 flow [2024-01-31 17:19:23,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-01-31 17:19:23,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-01-31 17:19:23,848 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 98 flow [2024-01-31 17:19:23,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:23,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:23,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:23,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-01-31 17:19:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:24,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:24,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1798103182, now seen corresponding path program 1 times [2024-01-31 17:19:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74147450] [2024-01-31 17:19:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:24,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:24,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:24,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-01-31 17:19:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:24,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:19:24,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:19:24,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:19:24,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:24,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74147450] [2024-01-31 17:19:24,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74147450] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:24,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:24,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:19:24,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928319528] [2024-01-31 17:19:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:24,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:19:24,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:19:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:19:24,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:19:24,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:24,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:24,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:19:24,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:24,466 INFO L124 PetriNetUnfolderBase]: 183/365 cut-off events. [2024-01-31 17:19:24,467 INFO L125 PetriNetUnfolderBase]: For 178/198 co-relation queries the response was YES. [2024-01-31 17:19:24,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 365 events. 183/365 cut-off events. For 178/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1392 event pairs, 130 based on Foata normal form. 4/341 useless extension candidates. Maximal degree in co-relation 661. Up to 289 conditions per place. [2024-01-31 17:19:24,469 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 24 selfloop transitions, 2 changer transitions 11/43 dead transitions. [2024-01-31 17:19:24,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 198 flow [2024-01-31 17:19:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:19:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:19:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-01-31 17:19:24,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-01-31 17:19:24,471 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 98 flow. Second operand 4 states and 68 transitions. [2024-01-31 17:19:24,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 198 flow [2024-01-31 17:19:24,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 188 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 17:19:24,475 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 102 flow [2024-01-31 17:19:24,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-01-31 17:19:24,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-01-31 17:19:24,476 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 102 flow [2024-01-31 17:19:24,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:24,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:24,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:24,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:24,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:24,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:24,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2060159943, now seen corresponding path program 1 times [2024-01-31 17:19:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582764305] [2024-01-31 17:19:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:24,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:24,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:24,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:24,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-01-31 17:19:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:24,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:19:24,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:19:24,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:19:24,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582764305] [2024-01-31 17:19:24,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582764305] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:19:24,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:19:24,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:19:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903825396] [2024-01-31 17:19:24,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:19:24,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:19:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:19:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:19:24,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:19:24,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:24,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:24,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:19:24,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:25,079 INFO L124 PetriNetUnfolderBase]: 221/405 cut-off events. [2024-01-31 17:19:25,080 INFO L125 PetriNetUnfolderBase]: For 100/136 co-relation queries the response was YES. [2024-01-31 17:19:25,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 405 events. 221/405 cut-off events. For 100/136 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1670 event pairs, 35 based on Foata normal form. 2/377 useless extension candidates. Maximal degree in co-relation 966. Up to 296 conditions per place. [2024-01-31 17:19:25,082 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-01-31 17:19:25,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 224 flow [2024-01-31 17:19:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:19:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:19:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-01-31 17:19:25,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-01-31 17:19:25,087 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 102 flow. Second operand 4 states and 69 transitions. [2024-01-31 17:19:25,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 224 flow [2024-01-31 17:19:25,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 216 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 17:19:25,093 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 120 flow [2024-01-31 17:19:25,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-01-31 17:19:25,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-01-31 17:19:25,095 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 120 flow [2024-01-31 17:19:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:25,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:25,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:25,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:25,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:25,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:25,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1449551143, now seen corresponding path program 1 times [2024-01-31 17:19:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:25,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110469288] [2024-01-31 17:19:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:19:25,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:25,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:25,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-01-31 17:19:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:19:25,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:19:25,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:25,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:25,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:25,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110469288] [2024-01-31 17:19:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110469288] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:19:25,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:19:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2024-01-31 17:19:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382622463] [2024-01-31 17:19:25,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:19:25,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:19:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:19:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:19:25,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:19:25,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:25,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:25,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:19:25,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:25,881 INFO L124 PetriNetUnfolderBase]: 597/1008 cut-off events. [2024-01-31 17:19:25,881 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-01-31 17:19:25,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 1008 events. 597/1008 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4244 event pairs, 57 based on Foata normal form. 36/983 useless extension candidates. Maximal degree in co-relation 2441. Up to 298 conditions per place. [2024-01-31 17:19:25,886 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 62 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-01-31 17:19:25,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 413 flow [2024-01-31 17:19:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:19:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:19:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-01-31 17:19:25,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-01-31 17:19:25,887 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 120 flow. Second operand 7 states and 102 transitions. [2024-01-31 17:19:25,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 413 flow [2024-01-31 17:19:25,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 407 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:19:25,890 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 210 flow [2024-01-31 17:19:25,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-01-31 17:19:25,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-01-31 17:19:25,891 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 210 flow [2024-01-31 17:19:25,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:25,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:25,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:25,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:26,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:26,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:26,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2060509935, now seen corresponding path program 2 times [2024-01-31 17:19:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579256718] [2024-01-31 17:19:26,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:19:26,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:26,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:26,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:26,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-01-31 17:19:26,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:19:26,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:19:26,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 17:19:26,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:27,194 INFO L349 Elim1Store]: treesize reduction 80, result has 76.0 percent of original size [2024-01-31 17:19:27,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 286 [2024-01-31 17:19:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:27,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:37,503 WARN L293 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 394 DAG size of output: 346 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-01-31 17:19:37,504 INFO L349 Elim1Store]: treesize reduction 168, result has 90.0 percent of original size [2024-01-31 17:19:37,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 269 treesize of output 1571 [2024-01-31 17:19:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:19:41,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579256718] [2024-01-31 17:19:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579256718] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:19:41,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:19:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-01-31 17:19:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649534843] [2024-01-31 17:19:41,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:19:41,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-31 17:19:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-31 17:19:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=177, Unknown=1, NotChecked=0, Total=240 [2024-01-31 17:19:46,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:19:50,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 17:19:50,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-01-31 17:19:50,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 210 flow. Second operand has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:50,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:50,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-01-31 17:19:50,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:52,869 INFO L124 PetriNetUnfolderBase]: 656/1152 cut-off events. [2024-01-31 17:19:52,870 INFO L125 PetriNetUnfolderBase]: For 972/978 co-relation queries the response was YES. [2024-01-31 17:19:52,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1152 events. 656/1152 cut-off events. For 972/978 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5111 event pairs, 62 based on Foata normal form. 7/1093 useless extension candidates. Maximal degree in co-relation 3354. Up to 333 conditions per place. [2024-01-31 17:19:52,878 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 11 changer transitions 4/125 dead transitions. [2024-01-31 17:19:52,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 125 transitions, 802 flow [2024-01-31 17:19:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:19:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:19:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-01-31 17:19:52,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-01-31 17:19:52,882 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 210 flow. Second operand 9 states and 136 transitions. [2024-01-31 17:19:52,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 125 transitions, 802 flow [2024-01-31 17:19:52,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 125 transitions, 802 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:19:52,889 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 294 flow [2024-01-31 17:19:52,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=294, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-01-31 17:19:52,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-01-31 17:19:52,890 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 294 flow [2024-01-31 17:19:52,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:52,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:52,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:52,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:53,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:53,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1538106158, now seen corresponding path program 3 times [2024-01-31 17:19:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092668086] [2024-01-31 17:19:53,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:19:53,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:53,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:53,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:53,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-01-31 17:19:53,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:19:53,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:19:53,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-31 17:19:53,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:19:53,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:19:54,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:54,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092668086] [2024-01-31 17:19:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092668086] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:19:54,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:19:54,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-01-31 17:19:54,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693526891] [2024-01-31 17:19:54,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:19:54,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:19:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:19:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:19:54,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-01-31 17:19:54,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:54,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:54,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-01-31 17:19:54,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:55,459 INFO L124 PetriNetUnfolderBase]: 990/1863 cut-off events. [2024-01-31 17:19:55,459 INFO L125 PetriNetUnfolderBase]: For 3257/3379 co-relation queries the response was YES. [2024-01-31 17:19:55,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 1863 events. 990/1863 cut-off events. For 3257/3379 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10147 event pairs, 400 based on Foata normal form. 93/1849 useless extension candidates. Maximal degree in co-relation 4715. Up to 915 conditions per place. [2024-01-31 17:19:55,470 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 40 selfloop transitions, 3 changer transitions 77/132 dead transitions. [2024-01-31 17:19:55,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 953 flow [2024-01-31 17:19:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:19:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:19:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-01-31 17:19:55,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-01-31 17:19:55,472 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 294 flow. Second operand 8 states and 144 transitions. [2024-01-31 17:19:55,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 953 flow [2024-01-31 17:19:55,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 945 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 17:19:55,485 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 316 flow [2024-01-31 17:19:55,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=316, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-01-31 17:19:55,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-01-31 17:19:55,486 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 316 flow [2024-01-31 17:19:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:55,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:55,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:55,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:55,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:55,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:55,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1181642863, now seen corresponding path program 4 times [2024-01-31 17:19:55,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:55,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157554360] [2024-01-31 17:19:55,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:19:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:55,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:55,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-01-31 17:19:55,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:19:55,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:19:55,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-31 17:19:55,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:19:56,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:19:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:19:56,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:19:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157554360] [2024-01-31 17:19:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157554360] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:19:56,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:19:56,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-01-31 17:19:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638963900] [2024-01-31 17:19:56,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:19:56,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-31 17:19:56,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:19:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-31 17:19:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-01-31 17:19:56,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:19:56,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 316 flow. Second operand has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:56,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:19:56,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:19:56,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:19:59,310 INFO L124 PetriNetUnfolderBase]: 2314/3979 cut-off events. [2024-01-31 17:19:59,310 INFO L125 PetriNetUnfolderBase]: For 7032/7032 co-relation queries the response was YES. [2024-01-31 17:19:59,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13785 conditions, 3979 events. 2314/3979 cut-off events. For 7032/7032 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21008 event pairs, 432 based on Foata normal form. 110/3907 useless extension candidates. Maximal degree in co-relation 13748. Up to 915 conditions per place. [2024-01-31 17:19:59,338 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 207 selfloop transitions, 25 changer transitions 48/283 dead transitions. [2024-01-31 17:19:59,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 283 transitions, 2050 flow [2024-01-31 17:19:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-31 17:19:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-31 17:19:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-01-31 17:19:59,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-01-31 17:19:59,342 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 316 flow. Second operand 19 states and 288 transitions. [2024-01-31 17:19:59,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 283 transitions, 2050 flow [2024-01-31 17:19:59,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 283 transitions, 1984 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-01-31 17:19:59,382 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 555 flow [2024-01-31 17:19:59,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=555, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-01-31 17:19:59,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-01-31 17:19:59,385 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 555 flow [2024-01-31 17:19:59,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:19:59,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:19:59,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:19:59,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-01-31 17:19:59,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:59,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:19:59,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:19:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1784466025, now seen corresponding path program 5 times [2024-01-31 17:19:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:19:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068017523] [2024-01-31 17:19:59,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:19:59,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:19:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:19:59,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:19:59,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-01-31 17:19:59,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 17:19:59,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:19:59,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:19:59,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:19:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:19:59,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:20:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:20:00,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-31 17:20:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068017523] [2024-01-31 17:20:00,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068017523] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:20:00,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:20:00,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 16 [2024-01-31 17:20:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532334396] [2024-01-31 17:20:00,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-31 17:20:00,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-31 17:20:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-31 17:20:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-31 17:20:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-01-31 17:20:00,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-01-31 17:20:00,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 555 flow. Second operand has 17 states, 17 states have (on average 8.647058823529411) internal successors, (147), 17 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:20:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:20:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-01-31 17:20:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:20:03,434 INFO L124 PetriNetUnfolderBase]: 4800/8311 cut-off events. [2024-01-31 17:20:03,434 INFO L125 PetriNetUnfolderBase]: For 21394/21394 co-relation queries the response was YES. [2024-01-31 17:20:03,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31243 conditions, 8311 events. 4800/8311 cut-off events. For 21394/21394 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 52373 event pairs, 444 based on Foata normal form. 484/8483 useless extension candidates. Maximal degree in co-relation 27122. Up to 2252 conditions per place. [2024-01-31 17:20:03,492 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 61 changer transitions 64/387 dead transitions. [2024-01-31 17:20:03,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 387 transitions, 3438 flow [2024-01-31 17:20:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-31 17:20:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-31 17:20:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 330 transitions. [2024-01-31 17:20:03,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296875 [2024-01-31 17:20:03,494 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 555 flow. Second operand 24 states and 330 transitions. [2024-01-31 17:20:03,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 387 transitions, 3438 flow [2024-01-31 17:20:03,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 387 transitions, 3332 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-01-31 17:20:03,600 INFO L231 Difference]: Finished difference. Result has 116 places, 123 transitions, 1143 flow [2024-01-31 17:20:03,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1143, PETRI_PLACES=116, PETRI_TRANSITIONS=123} [2024-01-31 17:20:03,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-01-31 17:20:03,601 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 123 transitions, 1143 flow [2024-01-31 17:20:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.647058823529411) internal successors, (147), 17 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:20:03,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:20:03,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:20:03,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-01-31 17:20:03,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:20:03,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:20:03,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:20:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash 377022539, now seen corresponding path program 6 times [2024-01-31 17:20:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-31 17:20:03,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890699467] [2024-01-31 17:20:03,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:20:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-31 17:20:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-31 17:20:03,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-31 17:20:03,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-01-31 17:20:04,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-01-31 17:20:04,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:20:04,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 23 conjunts are in the unsatisfiable core [2024-01-31 17:20:04,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:20:08,497 INFO L349 Elim1Store]: treesize reduction 268, result has 79.7 percent of original size [2024-01-31 17:20:08,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 6 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 298 treesize of output 1112 [2024-01-31 17:20:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-31 17:20:12,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:21:31,002 INFO L349 Elim1Store]: treesize reduction 324, result has 78.2 percent of original size [2024-01-31 17:21:31,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 260 treesize of output 1213 Killed by 15