/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:33:29,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:33:29,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:33:29,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-27 19:33:29,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:33:29,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:33:29,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:33:29,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:33:29,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:33:29,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:33:29,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:33:29,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:33:29,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:33:29,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:33:29,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:33:29,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:33:29,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:33:29,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:33:29,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:33:29,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:33:29,378 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 [2023-01-27 19:33:29,405 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:33:29,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:33:29,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:33:29,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:33:29,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:33:29,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:33:29,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:33:29,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:33:29,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:33:29,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:33:29,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:33:29,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:33:29,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:33:29,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:33:29,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:33:29,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:33:29,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:33:29,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:33:29,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:33:29,762 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:33:29,777 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:33:29,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-01-27 19:33:31,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:33:32,014 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:33:32,014 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-01-27 19:33:32,050 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445ac2e5e/b0907c0d97834636abf60c9b832821ef/FLAGb9b678f34 [2023-01-27 19:33:32,080 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445ac2e5e/b0907c0d97834636abf60c9b832821ef [2023-01-27 19:33:32,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:33:32,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:33:32,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:33:32,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:33:32,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:33:32,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:33:32" (1/1) ... [2023-01-27 19:33:32,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3114d5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:32, skipping insertion in model container [2023-01-27 19:33:32,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:33:32" (1/1) ... [2023-01-27 19:33:32,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:33:32,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:33:32,796 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-01-27 19:33:32,803 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,803 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,803 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,804 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:33:32,864 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:33:32,924 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-01-27 19:33:32,937 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,937 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,938 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,938 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:33:32,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:33:33,032 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:33:33,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33 WrapperNode [2023-01-27 19:33:33,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:33:33,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:33:33,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:33:33,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:33:33,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,156 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 228 [2023-01-27 19:33:33,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:33:33,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:33:33,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:33:33,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:33:33,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:33:33,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:33:33,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:33:33,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:33:33,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (1/1) ... [2023-01-27 19:33:33,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:33:33,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:33:33,346 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) [2023-01-27 19:33:33,397 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 [2023-01-27 19:33:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:33:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 19:33:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:33:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-27 19:33:33,461 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:33:33,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:33:33,462 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:33:33,755 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:33:33,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:33:34,407 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:33:34,413 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:33:34,413 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-27 19:33:34,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:33:34 BoogieIcfgContainer [2023-01-27 19:33:34,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:33:34,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:33:34,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:33:34,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:33:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:33:32" (1/3) ... [2023-01-27 19:33:34,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e95a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:33:34, skipping insertion in model container [2023-01-27 19:33:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:33:33" (2/3) ... [2023-01-27 19:33:34,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e95a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:33:34, skipping insertion in model container [2023-01-27 19:33:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:33:34" (3/3) ... [2023-01-27 19:33:34,448 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-01-27 19:33:34,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:33:34,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:33:34,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:33:34,663 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-27 19:33:34,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 237 transitions, 482 flow [2023-01-27 19:33:34,820 INFO L130 PetriNetUnfolder]: 29/253 cut-off events. [2023-01-27 19:33:34,820 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-01-27 19:33:34,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 253 events. 29/253 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 514 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-01-27 19:33:34,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 237 transitions, 482 flow [2023-01-27 19:33:34,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 232 transitions, 469 flow [2023-01-27 19:33:34,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:33:34,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 232 transitions, 469 flow [2023-01-27 19:33:34,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 232 transitions, 469 flow [2023-01-27 19:33:34,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 232 transitions, 469 flow [2023-01-27 19:33:34,907 INFO L130 PetriNetUnfolder]: 28/248 cut-off events. [2023-01-27 19:33:34,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:33:34,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 248 events. 28/248 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 471 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-01-27 19:33:34,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-01-27 19:34:04,513 WARN L222 SmtUtils]: Spent 12.44s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:34:12,941 WARN L222 SmtUtils]: Spent 8.42s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:34:23,239 WARN L222 SmtUtils]: Spent 10.30s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:34:30,923 WARN L222 SmtUtils]: Spent 7.68s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:34:31,294 INFO L134 LiptonReduction]: Checked pairs total: 3403 [2023-01-27 19:34:31,294 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-01-27 19:34:31,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:34:31,307 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;@641cdc59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:34:31,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 19:34:31,312 INFO L130 PetriNetUnfolder]: 4/19 cut-off events. [2023-01-27 19:34:31,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:34:31,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:31,313 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-27 19:34:31,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:31,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:31,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1537475574, now seen corresponding path program 1 times [2023-01-27 19:34:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173968577] [2023-01-27 19:34:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:34:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173968577] [2023-01-27 19:34:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173968577] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:34:32,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:34:32,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:34:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216632493] [2023-01-27 19:34:32,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:34:32,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:34:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:32,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:34:32,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:34:32,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 478 [2023-01-27 19:34:32,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2023-01-27 19:34:32,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:32,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 478 [2023-01-27 19:34:32,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:32,628 INFO L130 PetriNetUnfolder]: 48/112 cut-off events. [2023-01-27 19:34:32,628 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:34:32,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 112 events. 48/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 8/92 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-01-27 19:34:32,633 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-27 19:34:32,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-01-27 19:34:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:34:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:34:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2023-01-27 19:34:32,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45188284518828453 [2023-01-27 19:34:32,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2023-01-27 19:34:32,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2023-01-27 19:34:32,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:32,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2023-01-27 19:34:32,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2023-01-27 19:34:32,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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) [2023-01-27 19:34:32,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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) [2023-01-27 19:34:32,768 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 648 transitions. [2023-01-27 19:34:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-01-27 19:34:32,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:34:32,794 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-01-27 19:34:32,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-27 19:34:32,799 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-01-27 19:34:32,799 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-01-27 19:34:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2023-01-27 19:34:32,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:32,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:34:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:34:32,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:32,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1411218360, now seen corresponding path program 1 times [2023-01-27 19:34:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476754435] [2023-01-27 19:34:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:34:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:32,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476754435] [2023-01-27 19:34:32,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476754435] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:34:32,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:34:32,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:34:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248775867] [2023-01-27 19:34:32,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:34:32,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:34:32,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:32,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:34:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:34:32,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 478 [2023-01-27 19:34:32,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-01-27 19:34:32,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:32,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 478 [2023-01-27 19:34:32,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:33,227 INFO L130 PetriNetUnfolder]: 48/114 cut-off events. [2023-01-27 19:34:33,227 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:34:33,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 114 events. 48/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 276 event pairs, 33 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 210. Up to 100 conditions per place. [2023-01-27 19:34:33,227 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-01-27 19:34:33,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-01-27 19:34:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:34:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:34:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-01-27 19:34:33,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497907949790795 [2023-01-27 19:34:33,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-01-27 19:34:33,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-01-27 19:34:33,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:33,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-01-27 19:34:33,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2023-01-27 19:34:33,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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) [2023-01-27 19:34:33,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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) [2023-01-27 19:34:33,234 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 645 transitions. [2023-01-27 19:34:33,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-01-27 19:34:33,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:34:33,235 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-01-27 19:34:33,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-01-27 19:34:33,236 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-01-27 19:34:33,236 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-01-27 19:34:33,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-01-27 19:34:33,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:33,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:34:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:34:33,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:33,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 653315410, now seen corresponding path program 1 times [2023-01-27 19:34:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259434117] [2023-01-27 19:34:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:33,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:34:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451435187] [2023-01-27 19:34:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:33,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:33,349 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) [2023-01-27 19:34:33,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:34:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:34:33,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:34:33,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:34:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:33,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:34:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:33,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259434117] [2023-01-27 19:34:33,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:34:33,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451435187] [2023-01-27 19:34:33,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451435187] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:34:33,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:34:33,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-27 19:34:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142249017] [2023-01-27 19:34:33,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:34:33,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:34:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:34:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:34:33,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 478 [2023-01-27 19:34:33,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 208.83333333333334) internal successors, (1253), 6 states have internal predecessors, (1253), 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) [2023-01-27 19:34:33,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:33,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 478 [2023-01-27 19:34:33,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:33,958 INFO L130 PetriNetUnfolder]: 48/120 cut-off events. [2023-01-27 19:34:33,958 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 19:34:33,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 120 events. 48/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 217. Up to 100 conditions per place. [2023-01-27 19:34:33,961 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-01-27 19:34:33,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-01-27 19:34:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:34:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:34:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1271 transitions. [2023-01-27 19:34:33,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431659693165969 [2023-01-27 19:34:33,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1271 transitions. [2023-01-27 19:34:33,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1271 transitions. [2023-01-27 19:34:33,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:33,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1271 transitions. [2023-01-27 19:34:33,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.83333333333334) internal successors, (1271), 6 states have internal predecessors, (1271), 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) [2023-01-27 19:34:33,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-01-27 19:34:33,980 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-01-27 19:34:33,981 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 1271 transitions. [2023-01-27 19:34:33,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-01-27 19:34:33,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:34:33,986 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-01-27 19:34:33,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-27 19:34:33,987 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-01-27 19:34:33,987 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-01-27 19:34:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.83333333333334) internal successors, (1253), 6 states have internal predecessors, (1253), 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) [2023-01-27 19:34:33,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:33,988 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:34:33,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:34:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:34,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:34,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 389157432, now seen corresponding path program 2 times [2023-01-27 19:34:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137208134] [2023-01-27 19:34:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:34,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:34:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205734383] [2023-01-27 19:34:34,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:34:34,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:34,316 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) [2023-01-27 19:34:34,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:34:34,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:34:34,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:34:34,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 19:34:34,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:34:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:34,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:34:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:34:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137208134] [2023-01-27 19:34:35,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:34:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205734383] [2023-01-27 19:34:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205734383] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:34:35,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:34:35,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-27 19:34:35,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791923358] [2023-01-27 19:34:35,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:34:35,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 19:34:35,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:35,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 19:34:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-27 19:34:35,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 478 [2023-01-27 19:34:35,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 208.41666666666666) internal successors, (2501), 12 states have internal predecessors, (2501), 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) [2023-01-27 19:34:35,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:35,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 478 [2023-01-27 19:34:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:35,938 INFO L130 PetriNetUnfolder]: 48/132 cut-off events. [2023-01-27 19:34:35,939 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-27 19:34:35,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 132 events. 48/132 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 33 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 213. Up to 100 conditions per place. [2023-01-27 19:34:35,941 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-01-27 19:34:35,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-01-27 19:34:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 19:34:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 19:34:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2522 transitions. [2023-01-27 19:34:35,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396792189679219 [2023-01-27 19:34:35,950 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2522 transitions. [2023-01-27 19:34:35,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2522 transitions. [2023-01-27 19:34:35,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:35,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2522 transitions. [2023-01-27 19:34:35,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 210.16666666666666) internal successors, (2522), 12 states have internal predecessors, (2522), 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) [2023-01-27 19:34:35,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 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) [2023-01-27 19:34:35,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 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) [2023-01-27 19:34:35,981 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 2522 transitions. [2023-01-27 19:34:35,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-01-27 19:34:35,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 19:34:35,986 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-01-27 19:34:35,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-01-27 19:34:35,987 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-01-27 19:34:35,987 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-01-27 19:34:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.41666666666666) internal successors, (2501), 12 states have internal predecessors, (2501), 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) [2023-01-27 19:34:35,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:35,993 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:34:36,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:34:36,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 19:34:36,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:36,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2092588024, now seen corresponding path program 3 times [2023-01-27 19:34:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:36,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608115676] [2023-01-27 19:34:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:36,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:36,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:34:36,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147445604] [2023-01-27 19:34:36,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:34:36,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:36,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:36,469 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) [2023-01-27 19:34:36,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:34:36,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 19:34:36,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:34:36,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:34:36,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:34:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:34:37,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:34:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:34:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608115676] [2023-01-27 19:34:37,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:34:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147445604] [2023-01-27 19:34:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147445604] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:34:37,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:34:37,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-27 19:34:37,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678504197] [2023-01-27 19:34:37,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:34:37,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:34:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:34:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:34:37,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 478 [2023-01-27 19:34:37,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 206.16666666666666) internal successors, (1237), 6 states have internal predecessors, (1237), 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) [2023-01-27 19:34:37,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:37,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 478 [2023-01-27 19:34:37,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:37,545 INFO L130 PetriNetUnfolder]: 50/159 cut-off events. [2023-01-27 19:34:37,546 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2023-01-27 19:34:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 159 events. 50/159 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-01-27 19:34:37,546 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-01-27 19:34:37,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-01-27 19:34:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:34:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:34:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1259 transitions. [2023-01-27 19:34:37,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4389818688981869 [2023-01-27 19:34:37,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1259 transitions. [2023-01-27 19:34:37,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1259 transitions. [2023-01-27 19:34:37,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:37,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1259 transitions. [2023-01-27 19:34:37,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 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) [2023-01-27 19:34:37,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-01-27 19:34:37,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-01-27 19:34:37,555 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 1259 transitions. [2023-01-27 19:34:37,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-01-27 19:34:37,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-27 19:34:37,561 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-01-27 19:34:37,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-01-27 19:34:37,563 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-01-27 19:34:37,563 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-01-27 19:34:37,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.16666666666666) internal successors, (1237), 6 states have internal predecessors, (1237), 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) [2023-01-27 19:34:37,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:37,564 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:34:37,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:34:37,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:37,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:37,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash 336379330, now seen corresponding path program 4 times [2023-01-27 19:34:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:37,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359648206] [2023-01-27 19:34:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:38,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:34:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102552814] [2023-01-27 19:34:38,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:34:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:38,346 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) [2023-01-27 19:34:38,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:34:41,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:34:41,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:34:41,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 9497 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 19:34:41,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:34:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:34:41,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:34:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:34:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:34:41,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359648206] [2023-01-27 19:34:41,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:34:41,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102552814] [2023-01-27 19:34:41,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102552814] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:34:41,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:34:41,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-27 19:34:41,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673437855] [2023-01-27 19:34:41,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:34:41,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 19:34:41,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:34:41,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 19:34:41,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-27 19:34:41,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 478 [2023-01-27 19:34:41,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 208.33333333333334) internal successors, (5000), 24 states have internal predecessors, (5000), 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) [2023-01-27 19:34:41,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:34:41,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 478 [2023-01-27 19:34:41,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:34:44,056 INFO L130 PetriNetUnfolder]: 50/207 cut-off events. [2023-01-27 19:34:44,056 INFO L131 PetriNetUnfolder]: For 3489/3489 co-relation queries the response was YES. [2023-01-27 19:34:44,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 207 events. 50/207 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 48/230 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-01-27 19:34:44,057 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-01-27 19:34:44,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-01-27 19:34:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 19:34:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 19:34:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5024 transitions. [2023-01-27 19:34:44,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43793584379358436 [2023-01-27 19:34:44,080 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5024 transitions. [2023-01-27 19:34:44,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5024 transitions. [2023-01-27 19:34:44,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:34:44,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5024 transitions. [2023-01-27 19:34:44,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 209.33333333333334) internal successors, (5024), 24 states have internal predecessors, (5024), 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) [2023-01-27 19:34:44,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 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) [2023-01-27 19:34:44,135 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 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) [2023-01-27 19:34:44,135 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 5024 transitions. [2023-01-27 19:34:44,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-01-27 19:34:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:34:44,150 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-01-27 19:34:44,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-01-27 19:34:44,158 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-01-27 19:34:44,158 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-01-27 19:34:44,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 208.33333333333334) internal successors, (5000), 24 states have internal predecessors, (5000), 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) [2023-01-27 19:34:44,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:34:44,168 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:34:44,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:34:44,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:44,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:34:44,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:34:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1732545986, now seen corresponding path program 5 times [2023-01-27 19:34:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:34:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875253814] [2023-01-27 19:34:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:34:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:34:45,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:34:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338782675] [2023-01-27 19:34:45,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:34:45,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:34:45,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:34:45,648 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) [2023-01-27 19:34:45,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process