/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:49:31,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:49:31,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:49:31,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 11:49:31,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:49:31,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:49:31,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:49:31,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:49:31,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:49:31,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:49:31,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:49:31,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:49:31,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:49:31,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:49:31,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:49:31,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:49:31,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 11:49:31,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:49:31,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:49:31,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:49:31,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 11:49:31,186 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:49:31,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:49:31,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:49:31,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:49:31,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:49:31,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:49:31,188 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:49:31,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:49:31,188 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:49:31,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:49:31,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:49:31,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:49:31,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:49:31,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:49:31,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:49:31,189 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:49:31,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:49:31,190 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:49:31,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:49:31,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:49:31,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:49:31,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:49:31,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:49:31,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:49:31,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:49:31,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:49:31,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:49:31,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:49:31,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:49:31,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:49:31,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:49:31,192 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:49:31,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:49:31,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:49:31,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:49:31,375 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:49:31,376 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:49:31,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-01-28 11:49:32,262 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:49:32,395 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:49:32,395 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-01-28 11:49:32,403 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81dd6d80/e58e400e33ce490789b3306a141c0722/FLAGd2f3c4c6d [2023-01-28 11:49:32,411 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81dd6d80/e58e400e33ce490789b3306a141c0722 [2023-01-28 11:49:32,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:49:32,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:49:32,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:49:32,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:49:32,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:49:32,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4940fd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32, skipping insertion in model container [2023-01-28 11:49:32,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:49:32,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:49:32,541 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-01-28 11:49:32,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:49:32,555 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:49:32,570 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-01-28 11:49:32,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:49:32,578 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:49:32,578 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:49:32,582 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:49:32,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32 WrapperNode [2023-01-28 11:49:32,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:49:32,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:49:32,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:49:32,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:49:32,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,610 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 236 [2023-01-28 11:49:32,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:49:32,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:49:32,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:49:32,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:49:32,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:49:32,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:49:32,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:49:32,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:49:32,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (1/1) ... [2023-01-28 11:49:32,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:49:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:32,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 11:49:32,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:49:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:49:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:49:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:49:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:49:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:49:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:49:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:49:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 11:49:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:49:32,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:49:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:49:32,712 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 11:49:32,818 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:49:32,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:49:33,096 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:49:33,135 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:49:33,135 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 11:49:33,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:49:33 BoogieIcfgContainer [2023-01-28 11:49:33,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:49:33,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:49:33,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:49:33,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:49:33,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:49:32" (1/3) ... [2023-01-28 11:49:33,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa4131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:49:33, skipping insertion in model container [2023-01-28 11:49:33,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:49:32" (2/3) ... [2023-01-28 11:49:33,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa4131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:49:33, skipping insertion in model container [2023-01-28 11:49:33,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:49:33" (3/3) ... [2023-01-28 11:49:33,141 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-01-28 11:49:33,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:49:33,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:49:33,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:49:33,193 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 11:49:33,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 284 transitions, 592 flow [2023-01-28 11:49:33,306 INFO L130 PetriNetUnfolder]: 27/281 cut-off events. [2023-01-28 11:49:33,307 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:49:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 281 events. 27/281 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 209 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 222. Up to 3 conditions per place. [2023-01-28 11:49:33,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 284 transitions, 592 flow [2023-01-28 11:49:33,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 271 transitions, 560 flow [2023-01-28 11:49:33,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:49:33,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 271 transitions, 560 flow [2023-01-28 11:49:33,342 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 271 transitions, 560 flow [2023-01-28 11:49:33,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 271 transitions, 560 flow [2023-01-28 11:49:33,393 INFO L130 PetriNetUnfolder]: 27/271 cut-off events. [2023-01-28 11:49:33,393 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:49:33,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 271 events. 27/271 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 222. Up to 3 conditions per place. [2023-01-28 11:49:33,395 INFO L119 LiptonReduction]: Number of co-enabled transitions 2634 [2023-01-28 11:49:40,345 INFO L134 LiptonReduction]: Checked pairs total: 3780 [2023-01-28 11:49:40,345 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-01-28 11:49:40,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:49:40,371 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=LoopsAndPotentialCycles, 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;@14bf38bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:49:40,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 11:49:40,376 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-01-28 11:49:40,377 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:49:40,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:40,377 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] [2023-01-28 11:49:40,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:40,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -823952724, now seen corresponding path program 1 times [2023-01-28 11:49:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382038792] [2023-01-28 11:49:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:49:40,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:40,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382038792] [2023-01-28 11:49:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382038792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:49:40,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:49:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:49:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824948179] [2023-01-28 11:49:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:49:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:49:40,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:49:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:49:40,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 584 [2023-01-28 11:49:40,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-01-28 11:49:40,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:40,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 584 [2023-01-28 11:49:40,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:40,943 INFO L130 PetriNetUnfolder]: 692/923 cut-off events. [2023-01-28 11:49:40,944 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-01-28 11:49:40,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 923 events. 692/923 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3152 event pairs, 315 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 1616. Up to 907 conditions per place. [2023-01-28 11:49:40,951 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 30 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-01-28 11:49:40,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 152 flow [2023-01-28 11:49:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:49:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:49:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-01-28 11:49:40,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818493150684932 [2023-01-28 11:49:40,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-01-28 11:49:40,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-01-28 11:49:40,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:40,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-01-28 11:49:40,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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) [2023-01-28 11:49:40,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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) [2023-01-28 11:49:40,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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) [2023-01-28 11:49:40,985 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 86 flow. Second operand 3 states and 669 transitions. [2023-01-28 11:49:40,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 152 flow [2023-01-28 11:49:40,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 11:49:40,991 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 86 flow [2023-01-28 11:49:40,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-01-28 11:49:40,997 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-01-28 11:49:40,998 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 86 flow [2023-01-28 11:49:40,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-01-28 11:49:40,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:40,998 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] [2023-01-28 11:49:40,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:49:40,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:41,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1618956068, now seen corresponding path program 1 times [2023-01-28 11:49:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591146480] [2023-01-28 11:49:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:41,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:49:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:41,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591146480] [2023-01-28 11:49:41,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591146480] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:49:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:49:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:49:41,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544903460] [2023-01-28 11:49:41,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:49:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:49:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:49:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:49:41,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 584 [2023-01-28 11:49:41,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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) [2023-01-28 11:49:41,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:41,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 584 [2023-01-28 11:49:41,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:41,275 INFO L130 PetriNetUnfolder]: 692/925 cut-off events. [2023-01-28 11:49:41,275 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:49:41,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 925 events. 692/925 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3119 event pairs, 315 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1857. Up to 906 conditions per place. [2023-01-28 11:49:41,278 INFO L137 encePairwiseOnDemand]: 577/584 looper letters, 28 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-01-28 11:49:41,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 158 flow [2023-01-28 11:49:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:49:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:49:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 884 transitions. [2023-01-28 11:49:41,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784246575342466 [2023-01-28 11:49:41,281 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 884 transitions. [2023-01-28 11:49:41,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 884 transitions. [2023-01-28 11:49:41,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:41,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 884 transitions. [2023-01-28 11:49:41,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-01-28 11:49:41,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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) [2023-01-28 11:49:41,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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) [2023-01-28 11:49:41,286 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 86 flow. Second operand 4 states and 884 transitions. [2023-01-28 11:49:41,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 158 flow [2023-01-28 11:49:41,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 154 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 11:49:41,288 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 110 flow [2023-01-28 11:49:41,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-01-28 11:49:41,289 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 11:49:41,289 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 110 flow [2023-01-28 11:49:41,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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) [2023-01-28 11:49:41,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:41,290 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] [2023-01-28 11:49:41,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 11:49:41,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:41,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1120690575, now seen corresponding path program 1 times [2023-01-28 11:49:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:41,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494511516] [2023-01-28 11:49:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:41,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:49:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494511516] [2023-01-28 11:49:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494511516] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:49:41,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:49:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:49:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583298204] [2023-01-28 11:49:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:49:41,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:49:41,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:49:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:49:41,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 584 [2023-01-28 11:49:41,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2023-01-28 11:49:41,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:41,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 584 [2023-01-28 11:49:41,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:41,682 INFO L130 PetriNetUnfolder]: 1277/1690 cut-off events. [2023-01-28 11:49:41,683 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 11:49:41,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1690 events. 1277/1690 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6505 event pairs, 264 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 3407. Up to 1016 conditions per place. [2023-01-28 11:49:41,688 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 51 selfloop transitions, 4 changer transitions 1/59 dead transitions. [2023-01-28 11:49:41,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 59 transitions, 271 flow [2023-01-28 11:49:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:49:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:49:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-01-28 11:49:41,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469178082191781 [2023-01-28 11:49:41,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-01-28 11:49:41,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-01-28 11:49:41,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:41,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-01-28 11:49:41,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2023-01-28 11:49:41,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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) [2023-01-28 11:49:41,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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) [2023-01-28 11:49:41,695 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 110 flow. Second operand 3 states and 783 transitions. [2023-01-28 11:49:41,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 59 transitions, 271 flow [2023-01-28 11:49:41,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:49:41,697 INFO L231 Difference]: Finished difference. Result has 38 places, 40 transitions, 135 flow [2023-01-28 11:49:41,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2023-01-28 11:49:41,698 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-01-28 11:49:41,700 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 135 flow [2023-01-28 11:49:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2023-01-28 11:49:41,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:41,701 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] [2023-01-28 11:49:41,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 11:49:41,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:41,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1651521349, now seen corresponding path program 1 times [2023-01-28 11:49:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:41,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987215783] [2023-01-28 11:49:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:41,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987215783] [2023-01-28 11:49:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987215783] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804143176] [2023-01-28 11:49:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:41,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:41,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:41,809 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) [2023-01-28 11:49:41,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 11:49:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:41,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 11:49:41,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:49:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:42,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:49:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:42,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804143176] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:49:42,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:49:42,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 11:49:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123757407] [2023-01-28 11:49:42,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:49:42,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 11:49:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 11:49:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 11:49:42,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 584 [2023-01-28 11:49:42,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 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) [2023-01-28 11:49:42,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:42,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 584 [2023-01-28 11:49:42,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:42,434 INFO L130 PetriNetUnfolder]: 1914/2647 cut-off events. [2023-01-28 11:49:42,434 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-01-28 11:49:42,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5875 conditions, 2647 events. 1914/2647 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11676 event pairs, 666 based on Foata normal form. 0/1807 useless extension candidates. Maximal degree in co-relation 3542. Up to 1262 conditions per place. [2023-01-28 11:49:42,449 INFO L137 encePairwiseOnDemand]: 573/584 looper letters, 87 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2023-01-28 11:49:42,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 106 transitions, 548 flow [2023-01-28 11:49:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 11:49:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 11:49:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1761 transitions. [2023-01-28 11:49:42,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769263698630137 [2023-01-28 11:49:42,454 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1761 transitions. [2023-01-28 11:49:42,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1761 transitions. [2023-01-28 11:49:42,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:42,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1761 transitions. [2023-01-28 11:49:42,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 220.125) internal successors, (1761), 8 states have internal predecessors, (1761), 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) [2023-01-28 11:49:42,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 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) [2023-01-28 11:49:42,465 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 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) [2023-01-28 11:49:42,465 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 135 flow. Second operand 8 states and 1761 transitions. [2023-01-28 11:49:42,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 106 transitions, 548 flow [2023-01-28 11:49:42,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 106 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:49:42,469 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 250 flow [2023-01-28 11:49:42,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=250, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-01-28 11:49:42,469 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-01-28 11:49:42,469 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 250 flow [2023-01-28 11:49:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 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) [2023-01-28 11:49:42,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:42,471 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] [2023-01-28 11:49:42,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 11:49:42,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:42,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:42,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1450108102, now seen corresponding path program 1 times [2023-01-28 11:49:42,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:42,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76076628] [2023-01-28 11:49:42,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:42,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:42,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76076628] [2023-01-28 11:49:42,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76076628] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882235078] [2023-01-28 11:49:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:42,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:42,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:42,866 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) [2023-01-28 11:49:42,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 11:49:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:42,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 11:49:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:49:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:43,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:49:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882235078] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:49:43,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:49:43,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 11:49:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925374082] [2023-01-28 11:49:43,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:49:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 11:49:43,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 11:49:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 11:49:43,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 584 [2023-01-28 11:49:43,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 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) [2023-01-28 11:49:43,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:43,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 584 [2023-01-28 11:49:43,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:43,320 INFO L130 PetriNetUnfolder]: 1361/1892 cut-off events. [2023-01-28 11:49:43,320 INFO L131 PetriNetUnfolder]: For 315/337 co-relation queries the response was YES. [2023-01-28 11:49:43,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1892 events. 1361/1892 cut-off events. For 315/337 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7843 event pairs, 473 based on Foata normal form. 22/1379 useless extension candidates. Maximal degree in co-relation 4091. Up to 1170 conditions per place. [2023-01-28 11:49:43,328 INFO L137 encePairwiseOnDemand]: 574/584 looper letters, 43 selfloop transitions, 10 changer transitions 34/89 dead transitions. [2023-01-28 11:49:43,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 533 flow [2023-01-28 11:49:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 11:49:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 11:49:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1723 transitions. [2023-01-28 11:49:43,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687928082191781 [2023-01-28 11:49:43,332 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1723 transitions. [2023-01-28 11:49:43,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1723 transitions. [2023-01-28 11:49:43,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:43,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1723 transitions. [2023-01-28 11:49:43,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 215.375) internal successors, (1723), 8 states have internal predecessors, (1723), 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) [2023-01-28 11:49:43,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 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) [2023-01-28 11:49:43,341 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 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) [2023-01-28 11:49:43,341 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 250 flow. Second operand 8 states and 1723 transitions. [2023-01-28 11:49:43,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 533 flow [2023-01-28 11:49:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 512 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 11:49:43,344 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 202 flow [2023-01-28 11:49:43,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-01-28 11:49:43,345 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 11:49:43,345 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 202 flow [2023-01-28 11:49:43,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 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) [2023-01-28 11:49:43,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:43,346 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-28 11:49:43,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 11:49:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:43,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:43,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash 552953634, now seen corresponding path program 2 times [2023-01-28 11:49:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746295816] [2023-01-28 11:49:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 11:49:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746295816] [2023-01-28 11:49:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746295816] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134696606] [2023-01-28 11:49:43,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:49:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:43,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:43,726 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) [2023-01-28 11:49:43,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 11:49:43,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:49:43,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:49:43,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 11:49:43,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:49:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 11:49:43,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:49:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 11:49:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134696606] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:44,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:49:44,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 11:49:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991706593] [2023-01-28 11:49:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:49:44,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:49:44,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:49:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 11:49:44,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 584 [2023-01-28 11:49:44,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 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) [2023-01-28 11:49:44,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:44,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 584 [2023-01-28 11:49:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:44,236 INFO L130 PetriNetUnfolder]: 1547/2085 cut-off events. [2023-01-28 11:49:44,236 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2023-01-28 11:49:44,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 2085 events. 1547/2085 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8216 event pairs, 465 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 5511. Up to 1568 conditions per place. [2023-01-28 11:49:44,245 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 55 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-01-28 11:49:44,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 385 flow [2023-01-28 11:49:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:49:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:49:44,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1305 transitions. [2023-01-28 11:49:44,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724315068493151 [2023-01-28 11:49:44,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1305 transitions. [2023-01-28 11:49:44,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1305 transitions. [2023-01-28 11:49:44,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:44,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1305 transitions. [2023-01-28 11:49:44,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2023-01-28 11:49:44,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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) [2023-01-28 11:49:44,255 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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) [2023-01-28 11:49:44,255 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 202 flow. Second operand 6 states and 1305 transitions. [2023-01-28 11:49:44,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 385 flow [2023-01-28 11:49:44,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 349 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-28 11:49:44,264 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 191 flow [2023-01-28 11:49:44,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-01-28 11:49:44,265 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-01-28 11:49:44,266 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 191 flow [2023-01-28 11:49:44,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 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) [2023-01-28 11:49:44,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:44,266 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-28 11:49:44,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 11:49:44,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:44,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:44,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1297932992, now seen corresponding path program 1 times [2023-01-28 11:49:44,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:44,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641207984] [2023-01-28 11:49:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 11:49:44,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641207984] [2023-01-28 11:49:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641207984] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490929189] [2023-01-28 11:49:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:44,578 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) [2023-01-28 11:49:44,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 11:49:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:44,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 11:49:44,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:49:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 11:49:44,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:49:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 11:49:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490929189] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:49:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 11:49:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514781004] [2023-01-28 11:49:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:49:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:49:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:49:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 11:49:44,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 584 [2023-01-28 11:49:44,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2023-01-28 11:49:44,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:44,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 584 [2023-01-28 11:49:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:44,910 INFO L130 PetriNetUnfolder]: 1146/1548 cut-off events. [2023-01-28 11:49:44,910 INFO L131 PetriNetUnfolder]: For 488/601 co-relation queries the response was YES. [2023-01-28 11:49:44,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4033 conditions, 1548 events. 1146/1548 cut-off events. For 488/601 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5768 event pairs, 281 based on Foata normal form. 163/1370 useless extension candidates. Maximal degree in co-relation 3997. Up to 1015 conditions per place. [2023-01-28 11:49:44,917 INFO L137 encePairwiseOnDemand]: 578/584 looper letters, 49 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-01-28 11:49:44,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 346 flow [2023-01-28 11:49:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:49:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:49:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1277 transitions. [2023-01-28 11:49:44,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3644406392694064 [2023-01-28 11:49:44,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1277 transitions. [2023-01-28 11:49:44,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1277 transitions. [2023-01-28 11:49:44,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:44,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1277 transitions. [2023-01-28 11:49:44,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.83333333333334) internal successors, (1277), 6 states have internal predecessors, (1277), 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) [2023-01-28 11:49:44,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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) [2023-01-28 11:49:44,946 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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) [2023-01-28 11:49:44,946 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 191 flow. Second operand 6 states and 1277 transitions. [2023-01-28 11:49:44,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 346 flow [2023-01-28 11:49:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 331 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 11:49:44,950 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 208 flow [2023-01-28 11:49:44,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-01-28 11:49:44,950 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-01-28 11:49:44,950 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 208 flow [2023-01-28 11:49:44,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2023-01-28 11:49:44,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:44,951 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1] [2023-01-28 11:49:44,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 11:49:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:45,157 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:45,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2052497291, now seen corresponding path program 1 times [2023-01-28 11:49:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:45,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44221222] [2023-01-28 11:49:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:45,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 11:49:45,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:45,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44221222] [2023-01-28 11:49:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44221222] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677375682] [2023-01-28 11:49:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:45,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:45,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:45,259 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) [2023-01-28 11:49:45,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 11:49:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:45,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 11:49:45,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:49:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 11:49:45,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:49:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 11:49:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677375682] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:49:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 11:49:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763953006] [2023-01-28 11:49:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:49:45,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:49:45,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:49:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:49:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 11:49:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 584 [2023-01-28 11:49:45,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 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) [2023-01-28 11:49:45,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:49:45,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 584 [2023-01-28 11:49:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:49:45,605 INFO L130 PetriNetUnfolder]: 991/1364 cut-off events. [2023-01-28 11:49:45,606 INFO L131 PetriNetUnfolder]: For 764/968 co-relation queries the response was YES. [2023-01-28 11:49:45,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 1364 events. 991/1364 cut-off events. For 764/968 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4732 event pairs, 318 based on Foata normal form. 272/1348 useless extension candidates. Maximal degree in co-relation 3565. Up to 721 conditions per place. [2023-01-28 11:49:45,611 INFO L137 encePairwiseOnDemand]: 577/584 looper letters, 54 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2023-01-28 11:49:45,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 402 flow [2023-01-28 11:49:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:49:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:49:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1298 transitions. [2023-01-28 11:49:45,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704337899543379 [2023-01-28 11:49:45,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1298 transitions. [2023-01-28 11:49:45,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1298 transitions. [2023-01-28 11:49:45,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:49:45,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1298 transitions. [2023-01-28 11:49:45,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 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) [2023-01-28 11:49:45,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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) [2023-01-28 11:49:45,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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) [2023-01-28 11:49:45,621 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 208 flow. Second operand 6 states and 1298 transitions. [2023-01-28 11:49:45,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 402 flow [2023-01-28 11:49:45,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 390 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 11:49:45,624 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 236 flow [2023-01-28 11:49:45,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-01-28 11:49:45,626 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 11:49:45,626 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 236 flow [2023-01-28 11:49:45,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 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) [2023-01-28 11:49:45,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:49:45,631 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2023-01-28 11:49:45,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 11:49:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:45,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:49:45,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:49:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash 995945267, now seen corresponding path program 1 times [2023-01-28 11:49:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:49:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101615990] [2023-01-28 11:49:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:45,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:49:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:49:47,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:49:47,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101615990] [2023-01-28 11:49:47,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101615990] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:49:47,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245999233] [2023-01-28 11:49:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:49:47,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:49:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:49:47,955 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) [2023-01-28 11:49:47,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 11:49:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:49:48,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 74 conjunts are in the unsatisfiable core [2023-01-28 11:49:48,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:49:48,142 INFO L350 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 [2023-01-28 11:49:48,221 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 11:49:48,221 INFO L350 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 [2023-01-28 11:49:48,333 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:48,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-01-28 11:49:48,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:49:48,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 11:49:48,839 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2023-01-28 11:49:48,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2023-01-28 11:49:49,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:49:49,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:49:49,060 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2023-01-28 11:49:49,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 98 treesize of output 113 [2023-01-28 11:49:50,780 INFO L321 Elim1Store]: treesize reduction 96, result has 75.6 percent of original size [2023-01-28 11:49:50,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 262 treesize of output 442 [2023-01-28 11:49:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 11:49:56,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:49:56,396 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~maxa~0 |c_thread1Thread1of1ForFork0_#t~mem2|) (let ((.cse0 (+ c_~maxa~0 c_~maxb~0)) (.cse3 (+ c_~C~0.offset 4)) (.cse1 (+ (* c_thread1Thread1of1ForFork0_~i~0 4) c_~B~0.offset))) (and (or (<= c_~maxc~0 .cse0) (forall ((v_ArrVal_505 (Array Int Int))) (<= c_~maxb~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse1)))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse2 c_~C~0.base) .cse3) .cse0) (<= c_~maxb~0 (select (select .cse2 c_~B~0.base) .cse1))))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse5 (select (select .cse4 c_~B~0.base) .cse1))) (or (<= (select (select .cse4 c_~C~0.base) .cse3) (+ .cse5 c_~maxa~0)) (< .cse5 c_~maxb~0))))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse1))) (or (<= c_~maxc~0 (+ .cse6 c_~maxa~0)) (< .cse6 c_~maxb~0))))))) is different from false [2023-01-28 11:49:56,743 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ c_~maxa~0 c_~maxb~0)) (.cse5 (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset 4)) (select (select |c_#memory_int| c_~B~0.base) (+ 4 c_~B~0.offset)))) (.cse4 (select |c_#memory_int| c_~C~0.base)) (.cse3 (+ (* c_thread1Thread1of1ForFork0_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_503 Int)) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse1 (+ ~C~0.offset 4))) (let ((.cse0 (store (store |c_#memory_int| c_~C~0.base (store .cse4 .cse1 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse0 c_~C~0.base) .cse1) .cse2) (<= c_~maxb~0 (select (select .cse0 c_~B~0.base) .cse3)))))) (< .cse5 v_ArrVal_503))) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int)) (v_ArrVal_503 Int)) (or (< .cse5 v_ArrVal_503) (<= c_~maxb~0 (select (select (store (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3)))) (<= c_~maxc~0 .cse2)) (forall ((v_ArrVal_503 Int)) (or (< .cse5 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse7 (+ ~C~0.offset 4))) (let ((.cse6 (store (store |c_#memory_int| c_~C~0.base (store .cse4 .cse7 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse8 (select (select .cse6 c_~B~0.base) .cse3))) (or (<= (select (select .cse6 c_~C~0.base) .cse7) (+ .cse8 c_~maxa~0)) (< .cse8 c_~maxb~0)))))))) (forall ((v_ArrVal_503 Int)) (or (< .cse5 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse9 (select (select (store (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3))) (or (< .cse9 c_~maxb~0) (<= c_~maxc~0 (+ .cse9 c_~maxa~0))))))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork0_#t~mem2|)) is different from false [2023-01-28 11:49:56,845 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ c_~maxa~0 c_~maxb~0)) (.cse5 (+ 4 c_~B~0.offset)) (.cse6 (+ c_~A~0.offset 4)) (.cse3 (+ (* c_thread1Thread1of1ForFork0_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse1 (+ ~C~0.offset 4))) (let ((.cse0 (store (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) .cse1 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse0 c_~C~0.base) .cse1) .cse2) (<= c_~maxb~0 (select (select .cse0 c_~B~0.base) .cse3)))))) (< (+ (select (select .cse4 c_~B~0.base) .cse5) (select (select .cse4 c_~A~0.base) .cse6)) v_ArrVal_503)))) (or (<= c_~maxc~0 .cse2) (forall ((v_ArrVal_502 (Array Int Int)) (~C~0.offset Int) (v_ArrVal_505 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse7 c_~B~0.base) .cse5) (select (select .cse7 c_~A~0.base) .cse6)) v_ArrVal_503) (<= c_~maxb~0 (select (select (store (store .cse7 c_~C~0.base (store (select .cse7 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3)))))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse8 c_~B~0.base) .cse5) (select (select .cse8 c_~A~0.base) .cse6)) v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse11 (+ ~C~0.offset 4))) (let ((.cse10 (store (store .cse8 c_~C~0.base (store (select .cse8 c_~C~0.base) .cse11 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse9 (select (select .cse10 c_~B~0.base) .cse3))) (or (< .cse9 c_~maxb~0) (<= (select (select .cse10 c_~C~0.base) .cse11) (+ .cse9 c_~maxa~0)))))))))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse12 c_~B~0.base) .cse5) (select (select .cse12 c_~A~0.base) .cse6)) v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse13 (select (select (store (store .cse12 c_~C~0.base (store (select .cse12 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3))) (or (< .cse13 c_~maxb~0) (<= c_~maxc~0 (+ .cse13 c_~maxa~0)))))))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork0_#t~mem2|)) is different from false [2023-01-28 11:49:56,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:56,945 INFO L350 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 6159 treesize of output 6027 [2023-01-28 11:49:57,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2753 treesize of output 2657 [2023-01-28 11:49:57,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:57,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2741 treesize of output 2708 [2023-01-28 11:49:57,230 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:57,231 INFO L350 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 2677 treesize of output 2484 [2023-01-28 11:49:57,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2469 treesize of output 2421 [2023-01-28 11:49:57,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:57,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2545 treesize of output 2488 [2023-01-28 11:49:57,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:57,408 INFO L350 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 2457 treesize of output 2416 [2023-01-28 11:49:57,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:57,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2441 treesize of output 2432 [2023-01-28 11:49:57,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:49:57,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2441 treesize of output 2432 Received shutdown request... [2023-01-28 12:03:08,258 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 12:03:08,260 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 12:03:08,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 12:03:08,265 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:03:08,277 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:03:08,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:08,460 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. [2023-01-28 12:03:08,462 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 12:03:08,462 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 12:03:08,462 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 12:03:08,462 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:08,464 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:03:08,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:03:08,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:03:08 BasicIcfg [2023-01-28 12:03:08,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:03:08,466 INFO L158 Benchmark]: Toolchain (without parser) took 816052.77ms. Allocated memory was 327.2MB in the beginning and 1.2GB in the end (delta: 861.9MB). Free memory was 275.0MB in the beginning and 1.0GB in the end (delta: -765.4MB). Peak memory consumption was 706.1MB. Max. memory is 16.0GB. [2023-01-28 12:03:08,467 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:03:08,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.09ms. Allocated memory is still 327.2MB. Free memory was 274.8MB in the beginning and 262.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:03:08,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.21ms. Allocated memory is still 327.2MB. Free memory was 262.7MB in the beginning and 260.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:03:08,467 INFO L158 Benchmark]: Boogie Preprocessor took 41.44ms. Allocated memory is still 327.2MB. Free memory was 260.4MB in the beginning and 303.7MB in the end (delta: -43.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. [2023-01-28 12:03:08,467 INFO L158 Benchmark]: RCFGBuilder took 484.01ms. Allocated memory is still 327.2MB. Free memory was 303.7MB in the beginning and 271.8MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-28 12:03:08,467 INFO L158 Benchmark]: TraceAbstraction took 815328.26ms. Allocated memory was 327.2MB in the beginning and 1.2GB in the end (delta: 861.9MB). Free memory was 271.2MB in the beginning and 1.0GB in the end (delta: -769.2MB). Peak memory consumption was 699.7MB. Max. memory is 16.0GB. [2023-01-28 12:03:08,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 168.09ms. Allocated memory is still 327.2MB. Free memory was 274.8MB in the beginning and 262.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.21ms. Allocated memory is still 327.2MB. Free memory was 262.7MB in the beginning and 260.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.44ms. Allocated memory is still 327.2MB. Free memory was 260.4MB in the beginning and 303.7MB in the end (delta: -43.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. * RCFGBuilder took 484.01ms. Allocated memory is still 327.2MB. Free memory was 303.7MB in the beginning and 271.8MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 815328.26ms. Allocated memory was 327.2MB in the beginning and 1.2GB in the end (delta: 861.9MB). Free memory was 271.2MB in the beginning and 1.0GB in the end (delta: -769.2MB). Peak memory consumption was 699.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.0s, 254 PlacesBefore, 36 PlacesAfterwards, 271 TransitionsBefore, 34 TransitionsAfterwards, 2634 CoEnabledTransitionPairs, 7 FixpointIterations, 182 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 51 TrivialYvCompositions, 10 ConcurrentYvCompositions, 19 ChoiceCompositions, 300 TotalNumberOfCompositions, 3780 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2690, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1436, independent: 1408, independent conditional: 0, independent unconditional: 1408, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2690, independent: 1184, independent conditional: 0, independent unconditional: 1184, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 1436, unknown conditional: 0, unknown unconditional: 1436] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 303 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 815.2s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 388 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 388 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 5 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 261 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=4, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 496 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1801 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 103/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown