/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:41:33,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:41:33,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:41:33,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:41:33,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:41:33,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:41:33,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:41:33,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:41:33,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:41:33,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:41:33,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:41:33,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:41:33,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:41:33,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:41:33,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:41:33,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:41:33,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:41:33,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:41:33,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:41:33,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:41:33,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:41:33,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:41:33,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:41:33,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:41:33,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:41:33,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:41:33,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:41:33,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:41:33,661 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 23:41:33,686 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:41:33,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:41:33,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:41:33,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:41:33,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:41:33,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:41:33,688 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:41:33,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:41:33,688 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:41:33,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:41:33,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:41:33,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:41:33,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:41:33,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:41:33,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:41:33,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:41:33,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:41:33,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:41:33,875 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:41:33,876 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:41:33,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-01-27 23:41:34,825 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:41:35,027 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:41:35,028 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-01-27 23:41:35,044 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfffa24d/535b41d43e0749da8bb35b8f8460007a/FLAG06770e44d [2023-01-27 23:41:35,058 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfffa24d/535b41d43e0749da8bb35b8f8460007a [2023-01-27 23:41:35,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:41:35,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:41:35,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:41:35,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:41:35,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:41:35,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568243c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35, skipping insertion in model container [2023-01-27 23:41:35,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:41:35,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:41:35,356 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-01-27 23:41:35,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:41:35,381 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:41:35,417 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-01-27 23:41:35,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:41:35,456 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:41:35,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35 WrapperNode [2023-01-27 23:41:35,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:41:35,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:41:35,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:41:35,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:41:35,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,489 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 153 [2023-01-27 23:41:35,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:41:35,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:41:35,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:41:35,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:41:35,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:41:35,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:41:35,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:41:35,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:41:35,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (1/1) ... [2023-01-27 23:41:35,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:41:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:35,558 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 23:41:35,581 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 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:41:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:41:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:41:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:41:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:41:35,587 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 23:41:35,739 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:41:35,740 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:41:35,940 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:41:35,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:41:35,945 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:41:35,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:41:35 BoogieIcfgContainer [2023-01-27 23:41:35,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:41:35,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:41:35,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:41:35,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:41:35,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:41:35" (1/3) ... [2023-01-27 23:41:35,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467a96a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:41:35, skipping insertion in model container [2023-01-27 23:41:35,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:41:35" (2/3) ... [2023-01-27 23:41:35,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467a96a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:41:35, skipping insertion in model container [2023-01-27 23:41:35,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:41:35" (3/3) ... [2023-01-27 23:41:35,972 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-01-27 23:41:35,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:41:35,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:41:35,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:41:36,050 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:41:36,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 155 transitions, 326 flow [2023-01-27 23:41:36,117 INFO L130 PetriNetUnfolder]: 10/153 cut-off events. [2023-01-27 23:41:36,117 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:41:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 153 events. 10/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-27 23:41:36,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 155 transitions, 326 flow [2023-01-27 23:41:36,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 144 transitions, 297 flow [2023-01-27 23:41:36,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:41:36,135 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 144 transitions, 297 flow [2023-01-27 23:41:36,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 144 transitions, 297 flow [2023-01-27 23:41:36,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 144 transitions, 297 flow [2023-01-27 23:41:36,157 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-01-27 23:41:36,157 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:41:36,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 144 events. 10/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-27 23:41:36,161 INFO L119 LiptonReduction]: Number of co-enabled transitions 6492 [2023-01-27 23:41:38,953 INFO L134 LiptonReduction]: Checked pairs total: 8991 [2023-01-27 23:41:38,953 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-01-27 23:41:38,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:41:38,975 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;@a9d4a72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:41:38,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 23:41:38,983 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-01-27 23:41:38,983 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:41:38,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:38,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 23:41:38,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:38,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1268975004, now seen corresponding path program 1 times [2023-01-27 23:41:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130586551] [2023-01-27 23:41:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:39,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:39,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130586551] [2023-01-27 23:41:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130586551] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:39,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:39,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:41:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521497010] [2023-01-27 23:41:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:39,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:41:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:41:39,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:41:39,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 290 [2023-01-27 23:41:39,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 23:41:39,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:39,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 290 [2023-01-27 23:41:39,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:39,436 INFO L130 PetriNetUnfolder]: 661/1082 cut-off events. [2023-01-27 23:41:39,436 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-01-27 23:41:39,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1082 events. 661/1082 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4006 event pairs, 283 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 2034. Up to 687 conditions per place. [2023-01-27 23:41:39,444 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-01-27 23:41:39,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 227 flow [2023-01-27 23:41:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:41:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:41:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-01-27 23:41:39,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2023-01-27 23:41:39,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-01-27 23:41:39,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-01-27 23:41:39,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:39,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-01-27 23:41:39,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 23:41:39,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:39,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:39,481 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 448 transitions. [2023-01-27 23:41:39,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 227 flow [2023-01-27 23:41:39,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:41:39,485 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-01-27 23:41:39,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-01-27 23:41:39,489 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-27 23:41:39,489 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-01-27 23:41:39,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 23:41:39,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:39,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:39,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:41:39,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:39,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash -575844582, now seen corresponding path program 1 times [2023-01-27 23:41:39,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:39,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269037376] [2023-01-27 23:41:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:39,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269037376] [2023-01-27 23:41:39,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269037376] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:39,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:39,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:41:39,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795970843] [2023-01-27 23:41:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:39,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:41:39,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:41:39,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:41:39,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-01-27 23:41:39,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 23:41:39,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:39,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-01-27 23:41:39,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:39,699 INFO L130 PetriNetUnfolder]: 625/1064 cut-off events. [2023-01-27 23:41:39,699 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-01-27 23:41:39,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 1064 events. 625/1064 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4657 event pairs, 314 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2008. Up to 926 conditions per place. [2023-01-27 23:41:39,703 INFO L137 encePairwiseOnDemand]: 287/290 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-01-27 23:41:39,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 222 flow [2023-01-27 23:41:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:41:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:41:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-01-27 23:41:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2023-01-27 23:41:39,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-01-27 23:41:39,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-01-27 23:41:39,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:39,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-01-27 23:41:39,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 23:41:39,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:39,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:39,707 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 462 transitions. [2023-01-27 23:41:39,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 222 flow [2023-01-27 23:41:39,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:41:39,709 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-01-27 23:41:39,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-01-27 23:41:39,709 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-01-27 23:41:39,710 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-01-27 23:41:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 23:41:39,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:39,710 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:41:39,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:39,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -884871179, now seen corresponding path program 1 times [2023-01-27 23:41:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719961517] [2023-01-27 23:41:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719961517] [2023-01-27 23:41:39,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719961517] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:39,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110798070] [2023-01-27 23:41:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:39,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:39,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:39,827 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 23:41:39,871 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 23:41:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:39,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:41:39,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:41:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:39,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:41:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:40,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110798070] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:41:40,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:41:40,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-01-27 23:41:40,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732597262] [2023-01-27 23:41:40,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:41:40,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:41:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:41:40,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:41:40,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 290 [2023-01-27 23:41:40,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 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 23:41:40,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:40,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 290 [2023-01-27 23:41:40,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:40,445 INFO L130 PetriNetUnfolder]: 1619/2654 cut-off events. [2023-01-27 23:41:40,445 INFO L131 PetriNetUnfolder]: For 839/839 co-relation queries the response was YES. [2023-01-27 23:41:40,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 2654 events. 1619/2654 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12096 event pairs, 246 based on Foata normal form. 82/2392 useless extension candidates. Maximal degree in co-relation 5686. Up to 795 conditions per place. [2023-01-27 23:41:40,453 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions. [2023-01-27 23:41:40,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow [2023-01-27 23:41:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:41:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:41:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1735 transitions. [2023-01-27 23:41:40,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985632183908046 [2023-01-27 23:41:40,456 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1735 transitions. [2023-01-27 23:41:40,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1735 transitions. [2023-01-27 23:41:40,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:40,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1735 transitions. [2023-01-27 23:41:40,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.58333333333334) internal successors, (1735), 12 states have internal predecessors, (1735), 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 23:41:40,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 290.0) internal successors, (3770), 13 states have internal predecessors, (3770), 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 23:41:40,465 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 290.0) internal successors, (3770), 13 states have internal predecessors, (3770), 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 23:41:40,465 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1735 transitions. [2023-01-27 23:41:40,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow [2023-01-27 23:41:40,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 184 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:41:40,469 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-01-27 23:41:40,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2023-01-27 23:41:40,470 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-01-27 23:41:40,470 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-01-27 23:41:40,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 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 23:41:40,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:40,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:40,477 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 23:41:40,675 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 23:41:40,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:40,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2024911666, now seen corresponding path program 1 times [2023-01-27 23:41:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179420326] [2023-01-27 23:41:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:40,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:40,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179420326] [2023-01-27 23:41:40,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179420326] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:40,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:41:40,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122563622] [2023-01-27 23:41:40,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:40,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:41:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:41:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:41:40,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 290 [2023-01-27 23:41:40,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 23:41:40,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:40,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 290 [2023-01-27 23:41:40,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:40,810 INFO L130 PetriNetUnfolder]: 509/974 cut-off events. [2023-01-27 23:41:40,810 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2023-01-27 23:41:40,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 974 events. 509/974 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4145 event pairs, 98 based on Foata normal form. 0/886 useless extension candidates. Maximal degree in co-relation 2336. Up to 681 conditions per place. [2023-01-27 23:41:40,813 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 45 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-01-27 23:41:40,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 348 flow [2023-01-27 23:41:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:41:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:41:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-01-27 23:41:40,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2023-01-27 23:41:40,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-01-27 23:41:40,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-01-27 23:41:40,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:40,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-01-27 23:41:40,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 23:41:40,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:40,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:40,818 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 440 transitions. [2023-01-27 23:41:40,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 348 flow [2023-01-27 23:41:40,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 327 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-27 23:41:40,821 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-01-27 23:41:40,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-01-27 23:41:40,822 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-01-27 23:41:40,822 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-01-27 23:41:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 23:41:40,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:40,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:40,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:41:40,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:40,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2104323153, now seen corresponding path program 1 times [2023-01-27 23:41:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34598981] [2023-01-27 23:41:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:40,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34598981] [2023-01-27 23:41:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34598981] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:40,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:41:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093213568] [2023-01-27 23:41:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:40,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:41:40,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:41:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:41:40,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 290 [2023-01-27 23:41:40,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 23:41:40,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:40,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 290 [2023-01-27 23:41:40,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:40,946 INFO L130 PetriNetUnfolder]: 624/1145 cut-off events. [2023-01-27 23:41:40,946 INFO L131 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2023-01-27 23:41:40,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1145 events. 624/1145 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4697 event pairs, 391 based on Foata normal form. 24/1169 useless extension candidates. Maximal degree in co-relation 2382. Up to 849 conditions per place. [2023-01-27 23:41:40,950 INFO L137 encePairwiseOnDemand]: 284/290 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-01-27 23:41:40,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow [2023-01-27 23:41:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:41:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:41:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-01-27 23:41:40,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2023-01-27 23:41:40,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-01-27 23:41:40,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-01-27 23:41:40,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:40,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-01-27 23:41:40,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 23:41:40,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:40,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 23:41:40,953 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 444 transitions. [2023-01-27 23:41:40,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow [2023-01-27 23:41:40,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:41:40,956 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-01-27 23:41:40,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-27 23:41:40,956 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-27 23:41:40,956 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-01-27 23:41:40,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 23:41:40,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:40,957 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] [2023-01-27 23:41:40,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:41:40,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:40,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1299614568, now seen corresponding path program 1 times [2023-01-27 23:41:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112002910] [2023-01-27 23:41:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112002910] [2023-01-27 23:41:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112002910] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:41:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752240928] [2023-01-27 23:41:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:41:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:41:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:41:41,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-27 23:41:41,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 15 states, 15 states have (on average 91.4) internal successors, (1371), 15 states have internal predecessors, (1371), 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 23:41:41,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:41,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-27 23:41:41,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:42,387 INFO L130 PetriNetUnfolder]: 930/1729 cut-off events. [2023-01-27 23:41:42,388 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-01-27 23:41:42,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 1729 events. 930/1729 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7889 event pairs, 174 based on Foata normal form. 32/1747 useless extension candidates. Maximal degree in co-relation 2915. Up to 973 conditions per place. [2023-01-27 23:41:42,409 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 111 selfloop transitions, 38 changer transitions 30/179 dead transitions. [2023-01-27 23:41:42,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 179 transitions, 984 flow [2023-01-27 23:41:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 23:41:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 23:41:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2326 transitions. [2023-01-27 23:41:42,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3341954022988506 [2023-01-27 23:41:42,413 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2326 transitions. [2023-01-27 23:41:42,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2326 transitions. [2023-01-27 23:41:42,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:42,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2326 transitions. [2023-01-27 23:41:42,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.91666666666667) internal successors, (2326), 24 states have internal predecessors, (2326), 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 23:41:42,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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 23:41:42,439 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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 23:41:42,439 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 24 states and 2326 transitions. [2023-01-27 23:41:42,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 179 transitions, 984 flow [2023-01-27 23:41:42,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 954 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-27 23:41:42,448 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 542 flow [2023-01-27 23:41:42,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=542, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-01-27 23:41:42,449 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 54 predicate places. [2023-01-27 23:41:42,449 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 542 flow [2023-01-27 23:41:42,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.4) internal successors, (1371), 15 states have internal predecessors, (1371), 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 23:41:42,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:42,450 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] [2023-01-27 23:41:42,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:41:42,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:42,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1750382990, now seen corresponding path program 2 times [2023-01-27 23:41:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:42,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415657908] [2023-01-27 23:41:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:42,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:43,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415657908] [2023-01-27 23:41:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415657908] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:43,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:43,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-27 23:41:43,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64944621] [2023-01-27 23:41:43,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:43,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:41:43,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:41:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-01-27 23:41:43,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-27 23:41:43,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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 23:41:43,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:43,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-27 23:41:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:44,068 INFO L130 PetriNetUnfolder]: 1208/2259 cut-off events. [2023-01-27 23:41:44,068 INFO L131 PetriNetUnfolder]: For 2489/2489 co-relation queries the response was YES. [2023-01-27 23:41:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 2259 events. 1208/2259 cut-off events. For 2489/2489 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10806 event pairs, 374 based on Foata normal form. 16/2261 useless extension candidates. Maximal degree in co-relation 5574. Up to 1405 conditions per place. [2023-01-27 23:41:44,077 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 117 selfloop transitions, 32 changer transitions 23/172 dead transitions. [2023-01-27 23:41:44,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 172 transitions, 1221 flow [2023-01-27 23:41:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:41:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:41:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2023-01-27 23:41:44,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32733990147783254 [2023-01-27 23:41:44,080 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2023-01-27 23:41:44,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2023-01-27 23:41:44,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:44,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2023-01-27 23:41:44,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 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 23:41:44,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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 23:41:44,087 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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 23:41:44,087 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 542 flow. Second operand 14 states and 1329 transitions. [2023-01-27 23:41:44,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 172 transitions, 1221 flow [2023-01-27 23:41:44,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1209 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-27 23:41:44,096 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 756 flow [2023-01-27 23:41:44,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=756, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2023-01-27 23:41:44,096 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 74 predicate places. [2023-01-27 23:41:44,097 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 756 flow [2023-01-27 23:41:44,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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 23:41:44,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:44,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:44,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:41:44,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:44,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash 954194670, now seen corresponding path program 3 times [2023-01-27 23:41:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225916617] [2023-01-27 23:41:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225916617] [2023-01-27 23:41:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225916617] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:41:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:41:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-27 23:41:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276115940] [2023-01-27 23:41:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:44,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:41:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:41:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-01-27 23:41:44,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-27 23:41:44,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 756 flow. Second operand has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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 23:41:44,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:44,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-27 23:41:44,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:45,502 INFO L130 PetriNetUnfolder]: 1356/2543 cut-off events. [2023-01-27 23:41:45,502 INFO L131 PetriNetUnfolder]: For 3554/3554 co-relation queries the response was YES. [2023-01-27 23:41:45,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 2543 events. 1356/2543 cut-off events. For 3554/3554 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12525 event pairs, 371 based on Foata normal form. 16/2545 useless extension candidates. Maximal degree in co-relation 6506. Up to 1368 conditions per place. [2023-01-27 23:41:45,514 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 117 selfloop transitions, 40 changer transitions 24/181 dead transitions. [2023-01-27 23:41:45,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 181 transitions, 1431 flow [2023-01-27 23:41:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:41:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:41:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2023-01-27 23:41:45,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32733990147783254 [2023-01-27 23:41:45,517 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2023-01-27 23:41:45,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2023-01-27 23:41:45,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:45,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2023-01-27 23:41:45,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 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 23:41:45,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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 23:41:45,524 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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 23:41:45,524 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 756 flow. Second operand 14 states and 1329 transitions. [2023-01-27 23:41:45,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 181 transitions, 1431 flow [2023-01-27 23:41:45,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 1403 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 23:41:45,551 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 951 flow [2023-01-27 23:41:45,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=951, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2023-01-27 23:41:45,552 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-01-27 23:41:45,552 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 951 flow [2023-01-27 23:41:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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 23:41:45,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:45,553 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-01-27 23:41:45,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:41:45,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:45,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1380599275, now seen corresponding path program 2 times [2023-01-27 23:41:45,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662836572] [2023-01-27 23:41:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:45,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662836572] [2023-01-27 23:41:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662836572] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160934223] [2023-01-27 23:41:45,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:41:45,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:45,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:45,697 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 23:41:45,725 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 23:41:45,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:41:45,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:41:45,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:41:45,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:41:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:45,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:41:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160934223] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:41:45,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:41:45,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 14 [2023-01-27 23:41:45,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160201950] [2023-01-27 23:41:45,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:41:45,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:41:45,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:41:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:41:45,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 290 [2023-01-27 23:41:45,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 951 flow. Second operand has 15 states, 15 states have (on average 127.4) internal successors, (1911), 15 states have internal predecessors, (1911), 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 23:41:45,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:45,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 290 [2023-01-27 23:41:45,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:46,316 INFO L130 PetriNetUnfolder]: 1580/2955 cut-off events. [2023-01-27 23:41:46,316 INFO L131 PetriNetUnfolder]: For 5876/5876 co-relation queries the response was YES. [2023-01-27 23:41:46,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10280 conditions, 2955 events. 1580/2955 cut-off events. For 5876/5876 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14576 event pairs, 426 based on Foata normal form. 16/2957 useless extension candidates. Maximal degree in co-relation 7325. Up to 1002 conditions per place. [2023-01-27 23:41:46,331 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 198 selfloop transitions, 48 changer transitions 6/252 dead transitions. [2023-01-27 23:41:46,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 252 transitions, 2170 flow [2023-01-27 23:41:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 23:41:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 23:41:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2294 transitions. [2023-01-27 23:41:46,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46531440162271803 [2023-01-27 23:41:46,335 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2294 transitions. [2023-01-27 23:41:46,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2294 transitions. [2023-01-27 23:41:46,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:46,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2294 transitions. [2023-01-27 23:41:46,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 134.94117647058823) internal successors, (2294), 17 states have internal predecessors, (2294), 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 23:41:46,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 290.0) internal successors, (5220), 18 states have internal predecessors, (5220), 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 23:41:46,344 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 290.0) internal successors, (5220), 18 states have internal predecessors, (5220), 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 23:41:46,344 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 951 flow. Second operand 17 states and 2294 transitions. [2023-01-27 23:41:46,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 252 transitions, 2170 flow [2023-01-27 23:41:46,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 252 transitions, 2107 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-01-27 23:41:46,364 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1259 flow [2023-01-27 23:41:46,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1259, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2023-01-27 23:41:46,365 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 107 predicate places. [2023-01-27 23:41:46,365 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1259 flow [2023-01-27 23:41:46,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 127.4) internal successors, (1911), 15 states have internal predecessors, (1911), 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 23:41:46,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:46,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:46,372 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 23:41:46,570 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,SelfDestructingSolverStorable8 [2023-01-27 23:41:46,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:46,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 934646639, now seen corresponding path program 4 times [2023-01-27 23:41:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426237665] [2023-01-27 23:41:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:47,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:47,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426237665] [2023-01-27 23:41:47,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426237665] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:47,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096862753] [2023-01-27 23:41:47,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:41:47,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:47,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:47,082 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 23:41:47,084 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 23:41:47,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:41:47,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:41:47,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-27 23:41:47,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:41:47,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-27 23:41:47,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 45 [2023-01-27 23:41:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:51,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:41:52,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 46 [2023-01-27 23:41:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:41:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096862753] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:52,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:41:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 15] total 43 [2023-01-27 23:41:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146493860] [2023-01-27 23:41:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:41:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:41:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:41:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1751, Unknown=0, NotChecked=0, Total=1892 [2023-01-27 23:41:52,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-27 23:41:52,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1259 flow. Second operand has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 23:41:52,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:52,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-27 23:41:52,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:54,670 INFO L130 PetriNetUnfolder]: 2832/5250 cut-off events. [2023-01-27 23:41:54,670 INFO L131 PetriNetUnfolder]: For 14501/14501 co-relation queries the response was YES. [2023-01-27 23:41:54,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19586 conditions, 5250 events. 2832/5250 cut-off events. For 14501/14501 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 29424 event pairs, 686 based on Foata normal form. 0/5221 useless extension candidates. Maximal degree in co-relation 14314. Up to 1634 conditions per place. [2023-01-27 23:41:54,696 INFO L137 encePairwiseOnDemand]: 274/290 looper letters, 194 selfloop transitions, 140 changer transitions 4/338 dead transitions. [2023-01-27 23:41:54,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 338 transitions, 3324 flow [2023-01-27 23:41:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-27 23:41:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-27 23:41:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2708 transitions. [2023-01-27 23:41:54,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3334975369458128 [2023-01-27 23:41:54,702 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2708 transitions. [2023-01-27 23:41:54,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2708 transitions. [2023-01-27 23:41:54,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:54,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2708 transitions. [2023-01-27 23:41:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 96.71428571428571) internal successors, (2708), 28 states have internal predecessors, (2708), 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 23:41:54,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 290.0) internal successors, (8410), 29 states have internal predecessors, (8410), 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 23:41:54,714 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 290.0) internal successors, (8410), 29 states have internal predecessors, (8410), 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 23:41:54,714 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1259 flow. Second operand 28 states and 2708 transitions. [2023-01-27 23:41:54,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 338 transitions, 3324 flow [2023-01-27 23:41:54,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 338 transitions, 3094 flow, removed 73 selfloop flow, removed 8 redundant places. [2023-01-27 23:41:54,754 INFO L231 Difference]: Finished difference. Result has 167 places, 204 transitions, 2262 flow [2023-01-27 23:41:54,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2262, PETRI_PLACES=167, PETRI_TRANSITIONS=204} [2023-01-27 23:41:54,755 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 133 predicate places. [2023-01-27 23:41:54,755 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 204 transitions, 2262 flow [2023-01-27 23:41:54,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 23:41:54,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:54,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:54,762 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 23:41:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:54,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:41:54,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1979329675, now seen corresponding path program 5 times [2023-01-27 23:41:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:54,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627056414] [2023-01-27 23:41:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627056414] [2023-01-27 23:41:55,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627056414] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919462536] [2023-01-27 23:41:55,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:41:55,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:55,685 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 23:41:55,686 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 23:41:55,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:41:55,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:41:55,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 71 conjunts are in the unsatisfiable core [2023-01-27 23:41:55,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:41:55,784 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 23:41:55,785 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 29 treesize of output 34 [2023-01-27 23:41:56,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-27 23:41:56,408 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 43 treesize of output 38 [2023-01-27 23:41:56,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 45 [2023-01-27 23:42:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:42:01,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:42:01,644 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_315) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-27 23:42:01,651 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_315) |c_~#arr~0.base|) (+ (* 4 |c_t1Thread1of1ForFork0_inc_top_#t~post31#1|) |c_~#arr~0.offset|)) 4294967296)))) is different from false [2023-01-27 23:42:01,655 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_315) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2023-01-27 23:42:01,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:42:01,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-27 23:42:01,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:42:01,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-27 23:42:01,670 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 28 treesize of output 22 [2023-01-27 23:42:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-01-27 23:42:01,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919462536] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:42:01,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:42:01,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 46 [2023-01-27 23:42:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165351444] [2023-01-27 23:42:01,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:42:01,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-01-27 23:42:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:42:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-01-27 23:42:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1815, Unknown=5, NotChecked=264, Total=2256 [2023-01-27 23:42:01,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-27 23:42:01,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 204 transitions, 2262 flow. Second operand has 48 states, 48 states have (on average 87.75) internal successors, (4212), 48 states have internal predecessors, (4212), 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 23:42:01,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:42:01,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-27 23:42:01,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:42:06,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:42:08,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:42:11,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:42:21,373 INFO L130 PetriNetUnfolder]: 7761/14799 cut-off events. [2023-01-27 23:42:21,373 INFO L131 PetriNetUnfolder]: For 52255/52255 co-relation queries the response was YES. [2023-01-27 23:42:21,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58359 conditions, 14799 events. 7761/14799 cut-off events. For 52255/52255 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 106264 event pairs, 1339 based on Foata normal form. 52/14770 useless extension candidates. Maximal degree in co-relation 41005. Up to 3311 conditions per place. [2023-01-27 23:42:21,460 INFO L137 encePairwiseOnDemand]: 266/290 looper letters, 520 selfloop transitions, 606 changer transitions 20/1146 dead transitions. [2023-01-27 23:42:21,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1146 transitions, 12097 flow [2023-01-27 23:42:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-01-27 23:42:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-01-27 23:42:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 8323 transitions. [2023-01-27 23:42:21,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3188888888888889 [2023-01-27 23:42:21,470 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 8323 transitions. [2023-01-27 23:42:21,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 8323 transitions. [2023-01-27 23:42:21,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:42:21,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 8323 transitions. [2023-01-27 23:42:21,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 92.47777777777777) internal successors, (8323), 90 states have internal predecessors, (8323), 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 23:42:21,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 290.0) internal successors, (26390), 91 states have internal predecessors, (26390), 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 23:42:21,501 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 290.0) internal successors, (26390), 91 states have internal predecessors, (26390), 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 23:42:21,501 INFO L175 Difference]: Start difference. First operand has 167 places, 204 transitions, 2262 flow. Second operand 90 states and 8323 transitions. [2023-01-27 23:42:21,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 1146 transitions, 12097 flow [2023-01-27 23:42:21,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1146 transitions, 11334 flow, removed 299 selfloop flow, removed 6 redundant places. [2023-01-27 23:42:21,715 INFO L231 Difference]: Finished difference. Result has 300 places, 769 transitions, 9935 flow [2023-01-27 23:42:21,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=9935, PETRI_PLACES=300, PETRI_TRANSITIONS=769} [2023-01-27 23:42:21,718 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 266 predicate places. [2023-01-27 23:42:21,718 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 769 transitions, 9935 flow [2023-01-27 23:42:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 87.75) internal successors, (4212), 48 states have internal predecessors, (4212), 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 23:42:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:42:21,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:42:21,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 23:42:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:42:21,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:42:21,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:42:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash -388940039, now seen corresponding path program 6 times [2023-01-27 23:42:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:42:21,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981975005] [2023-01-27 23:42:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:42:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:42:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:42:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:42:22,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:42:22,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981975005] [2023-01-27 23:42:22,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981975005] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:42:22,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378346958] [2023-01-27 23:42:22,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 23:42:22,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:42:22,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:42:22,729 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 23:42:22,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:42:22,806 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 23:42:22,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:42:22,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-27 23:42:22,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:42:22,823 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 23:42:22,823 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 29 treesize of output 34 [2023-01-27 23:42:23,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-01-27 23:42:23,091 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 59 treesize of output 54 [2023-01-27 23:42:23,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 110 treesize of output 45 [2023-01-27 23:42:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:42:26,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:42:26,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:42:26,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-27 23:42:26,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:42:26,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-27 23:42:26,435 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 28 treesize of output 22 [2023-01-27 23:42:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:42:26,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378346958] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:42:26,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:42:26,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 44 [2023-01-27 23:42:26,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762869028] [2023-01-27 23:42:26,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:42:26,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-01-27 23:42:26,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:42:26,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-01-27 23:42:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1913, Unknown=7, NotChecked=0, Total=2070 [2023-01-27 23:42:26,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-27 23:42:26,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 769 transitions, 9935 flow. Second operand has 46 states, 46 states have (on average 87.82608695652173) internal successors, (4040), 46 states have internal predecessors, (4040), 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 23:42:26,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:42:26,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-27 23:42:26,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:42:49,445 INFO L130 PetriNetUnfolder]: 9814/18948 cut-off events. [2023-01-27 23:42:49,445 INFO L131 PetriNetUnfolder]: For 1841162/1841162 co-relation queries the response was YES. [2023-01-27 23:42:49,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241144 conditions, 18948 events. 9814/18948 cut-off events. For 1841162/1841162 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 142620 event pairs, 1440 based on Foata normal form. 85/18926 useless extension candidates. Maximal degree in co-relation 231665. Up to 8268 conditions per place. [2023-01-27 23:42:49,845 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 523 selfloop transitions, 880 changer transitions 15/1418 dead transitions. [2023-01-27 23:42:49,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1418 transitions, 25246 flow [2023-01-27 23:42:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-01-27 23:42:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-01-27 23:42:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5544 transitions. [2023-01-27 23:42:49,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31862068965517243 [2023-01-27 23:42:49,851 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5544 transitions. [2023-01-27 23:42:49,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5544 transitions. [2023-01-27 23:42:49,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:42:49,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5544 transitions. [2023-01-27 23:42:49,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 92.4) internal successors, (5544), 60 states have internal predecessors, (5544), 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 23:42:49,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 290.0) internal successors, (17690), 61 states have internal predecessors, (17690), 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 23:42:49,870 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 290.0) internal successors, (17690), 61 states have internal predecessors, (17690), 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 23:42:49,870 INFO L175 Difference]: Start difference. First operand has 300 places, 769 transitions, 9935 flow. Second operand 60 states and 5544 transitions. [2023-01-27 23:42:49,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1418 transitions, 25246 flow [2023-01-27 23:42:51,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1418 transitions, 24582 flow, removed 294 selfloop flow, removed 12 redundant places. [2023-01-27 23:42:51,666 INFO L231 Difference]: Finished difference. Result has 356 places, 1052 transitions, 15295 flow [2023-01-27 23:42:51,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=9355, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=15295, PETRI_PLACES=356, PETRI_TRANSITIONS=1052} [2023-01-27 23:42:51,667 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 322 predicate places. [2023-01-27 23:42:51,667 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1052 transitions, 15295 flow [2023-01-27 23:42:51,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 87.82608695652173) internal successors, (4040), 46 states have internal predecessors, (4040), 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 23:42:51,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:42:51,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:42:51,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:42:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-27 23:42:51,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:42:51,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:42:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash -277182823, now seen corresponding path program 1 times [2023-01-27 23:42:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:42:51,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887213263] [2023-01-27 23:42:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:42:51,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:42:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:42:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:42:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:42:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887213263] [2023-01-27 23:42:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887213263] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:42:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133307105] [2023-01-27 23:42:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:42:51,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:42:51,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:42:51,990 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) [2023-01-27 23:42:51,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:42:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:42:52,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:42:52,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:42:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 23:42:52,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:42:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 23:42:52,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133307105] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:42:52,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:42:52,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-01-27 23:42:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967647397] [2023-01-27 23:42:52,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:42:52,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:42:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:42:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:42:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:42:52,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 290 [2023-01-27 23:42:52,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1052 transitions, 15295 flow. Second operand has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 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 23:42:52,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:42:52,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 290 [2023-01-27 23:42:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:42:59,494 INFO L130 PetriNetUnfolder]: 11020/21354 cut-off events. [2023-01-27 23:42:59,494 INFO L131 PetriNetUnfolder]: For 2072502/2072502 co-relation queries the response was YES. [2023-01-27 23:42:59,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274240 conditions, 21354 events. 11020/21354 cut-off events. For 2072502/2072502 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 166315 event pairs, 2502 based on Foata normal form. 85/21332 useless extension candidates. Maximal degree in co-relation 264696. Up to 9638 conditions per place. [2023-01-27 23:42:59,776 INFO L137 encePairwiseOnDemand]: 280/290 looper letters, 998 selfloop transitions, 428 changer transitions 14/1440 dead transitions. [2023-01-27 23:42:59,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1440 transitions, 24577 flow [2023-01-27 23:42:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 23:42:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 23:42:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2117 transitions. [2023-01-27 23:42:59,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2023-01-27 23:42:59,778 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2117 transitions. [2023-01-27 23:42:59,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2117 transitions. [2023-01-27 23:42:59,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:42:59,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2117 transitions. [2023-01-27 23:42:59,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 132.3125) internal successors, (2117), 16 states have internal predecessors, (2117), 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 23:42:59,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 290.0) internal successors, (4930), 17 states have internal predecessors, (4930), 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 23:42:59,783 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 290.0) internal successors, (4930), 17 states have internal predecessors, (4930), 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 23:42:59,783 INFO L175 Difference]: Start difference. First operand has 356 places, 1052 transitions, 15295 flow. Second operand 16 states and 2117 transitions. [2023-01-27 23:42:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1440 transitions, 24577 flow [2023-01-27 23:43:01,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1440 transitions, 23105 flow, removed 408 selfloop flow, removed 14 redundant places. [2023-01-27 23:43:01,958 INFO L231 Difference]: Finished difference. Result has 365 places, 1152 transitions, 17208 flow [2023-01-27 23:43:01,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=14017, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17208, PETRI_PLACES=365, PETRI_TRANSITIONS=1152} [2023-01-27 23:43:01,960 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 331 predicate places. [2023-01-27 23:43:01,960 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 1152 transitions, 17208 flow [2023-01-27 23:43:01,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 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 23:43:01,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:43:01,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:43:01,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 23:43:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:43:02,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:43:02,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:43:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2131210369, now seen corresponding path program 1 times [2023-01-27 23:43:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:43:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589152951] [2023-01-27 23:43:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:43:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:43:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:43:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:03,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:43:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589152951] [2023-01-27 23:43:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589152951] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:43:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590806806] [2023-01-27 23:43:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:43:03,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:43:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:43:03,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:43:03,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:43:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:43:03,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-27 23:43:03,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:43:03,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-27 23:43:03,824 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 48 treesize of output 34 [2023-01-27 23:43:04,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:43:04,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 45 [2023-01-27 23:43:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:09,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:43:10,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 48 [2023-01-27 23:43:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:11,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590806806] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:43:11,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:43:11,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 20] total 60 [2023-01-27 23:43:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952288605] [2023-01-27 23:43:11,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:43:11,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-01-27 23:43:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:43:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-01-27 23:43:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=3404, Unknown=2, NotChecked=0, Total=3782 [2023-01-27 23:43:11,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-27 23:43:11,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1152 transitions, 17208 flow. Second operand has 62 states, 62 states have (on average 91.74193548387096) internal successors, (5688), 62 states have internal predecessors, (5688), 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 23:43:11,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:43:11,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-27 23:43:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:43:35,632 INFO L130 PetriNetUnfolder]: 14139/27802 cut-off events. [2023-01-27 23:43:35,632 INFO L131 PetriNetUnfolder]: For 2704623/2704623 co-relation queries the response was YES. [2023-01-27 23:43:35,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354922 conditions, 27802 events. 14139/27802 cut-off events. For 2704623/2704623 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 221340 event pairs, 3052 based on Foata normal form. 318/28013 useless extension candidates. Maximal degree in co-relation 345507. Up to 13434 conditions per place. [2023-01-27 23:43:36,006 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 1192 selfloop transitions, 709 changer transitions 105/2006 dead transitions. [2023-01-27 23:43:36,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 2006 transitions, 37789 flow [2023-01-27 23:43:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-01-27 23:43:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-01-27 23:43:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6637 transitions. [2023-01-27 23:43:36,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3316841579210395 [2023-01-27 23:43:36,012 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6637 transitions. [2023-01-27 23:43:36,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6637 transitions. [2023-01-27 23:43:36,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:43:36,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6637 transitions. [2023-01-27 23:43:36,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 96.18840579710145) internal successors, (6637), 69 states have internal predecessors, (6637), 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 23:43:36,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 290.0) internal successors, (20300), 70 states have internal predecessors, (20300), 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 23:43:36,029 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 290.0) internal successors, (20300), 70 states have internal predecessors, (20300), 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 23:43:36,029 INFO L175 Difference]: Start difference. First operand has 365 places, 1152 transitions, 17208 flow. Second operand 69 states and 6637 transitions. [2023-01-27 23:43:36,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 2006 transitions, 37789 flow [2023-01-27 23:43:39,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 2006 transitions, 37253 flow, removed 259 selfloop flow, removed 3 redundant places. [2023-01-27 23:43:39,432 INFO L231 Difference]: Finished difference. Result has 463 places, 1507 transitions, 25413 flow [2023-01-27 23:43:39,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=16982, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=25413, PETRI_PLACES=463, PETRI_TRANSITIONS=1507} [2023-01-27 23:43:39,433 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 429 predicate places. [2023-01-27 23:43:39,433 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 1507 transitions, 25413 flow [2023-01-27 23:43:39,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 91.74193548387096) internal successors, (5688), 62 states have internal predecessors, (5688), 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 23:43:39,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:43:39,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:43:39,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 23:43:39,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:43:39,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:43:39,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:43:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1071599769, now seen corresponding path program 2 times [2023-01-27 23:43:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:43:39,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294847712] [2023-01-27 23:43:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:43:39,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:43:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:43:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:40,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:43:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294847712] [2023-01-27 23:43:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294847712] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:43:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823124549] [2023-01-27 23:43:40,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:43:40,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:43:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:43:40,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:43:40,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:43:40,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:43:40,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:43:40,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 88 conjunts are in the unsatisfiable core [2023-01-27 23:43:40,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:43:40,642 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:43:40,642 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 15 treesize of output 15 [2023-01-27 23:43:40,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:43:40,819 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 21 treesize of output 21 [2023-01-27 23:43:41,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:43:41,064 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 30 treesize of output 25 [2023-01-27 23:43:41,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 56 treesize of output 32 [2023-01-27 23:43:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:41,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:43:43,038 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_552 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_552) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-27 23:43:43,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:43:43,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-27 23:43:43,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:43:43,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-27 23:43:43,055 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 28 treesize of output 22 [2023-01-27 23:43:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:43,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823124549] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:43:43,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:43:43,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 59 [2023-01-27 23:43:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941415911] [2023-01-27 23:43:43,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:43:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-01-27 23:43:43,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:43:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-01-27 23:43:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3326, Unknown=1, NotChecked=116, Total=3660 [2023-01-27 23:43:43,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-27 23:43:43,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 1507 transitions, 25413 flow. Second operand has 61 states, 61 states have (on average 87.70491803278688) internal successors, (5350), 61 states have internal predecessors, (5350), 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 23:43:43,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:43:43,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-27 23:43:43,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:44:22,867 INFO L130 PetriNetUnfolder]: 23071/46102 cut-off events. [2023-01-27 23:44:22,868 INFO L131 PetriNetUnfolder]: For 4674490/4674490 co-relation queries the response was YES. [2023-01-27 23:44:23,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610805 conditions, 46102 events. 23071/46102 cut-off events. For 4674490/4674490 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 394050 event pairs, 2799 based on Foata normal form. 456/46375 useless extension candidates. Maximal degree in co-relation 601037. Up to 19472 conditions per place. [2023-01-27 23:44:23,982 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 838 selfloop transitions, 2439 changer transitions 83/3360 dead transitions. [2023-01-27 23:44:23,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 3360 transitions, 69300 flow [2023-01-27 23:44:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-01-27 23:44:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-01-27 23:44:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 9016 transitions. [2023-01-27 23:44:23,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31724137931034485 [2023-01-27 23:44:23,992 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 9016 transitions. [2023-01-27 23:44:23,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 9016 transitions. [2023-01-27 23:44:24,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:44:24,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 9016 transitions. [2023-01-27 23:44:24,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 92.0) internal successors, (9016), 98 states have internal predecessors, (9016), 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 23:44:24,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 290.0) internal successors, (28710), 99 states have internal predecessors, (28710), 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 23:44:24,027 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 290.0) internal successors, (28710), 99 states have internal predecessors, (28710), 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 23:44:24,027 INFO L175 Difference]: Start difference. First operand has 463 places, 1507 transitions, 25413 flow. Second operand 98 states and 9016 transitions. [2023-01-27 23:44:24,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 3360 transitions, 69300 flow [2023-01-27 23:44:43,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 3360 transitions, 66946 flow, removed 1153 selfloop flow, removed 11 redundant places. [2023-01-27 23:44:43,222 INFO L231 Difference]: Finished difference. Result has 560 places, 2663 transitions, 50812 flow [2023-01-27 23:44:43,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=24411, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=50812, PETRI_PLACES=560, PETRI_TRANSITIONS=2663} [2023-01-27 23:44:43,224 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 526 predicate places. [2023-01-27 23:44:43,224 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 2663 transitions, 50812 flow [2023-01-27 23:44:43,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 87.70491803278688) internal successors, (5350), 61 states have internal predecessors, (5350), 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 23:44:43,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:44:43,225 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:44:43,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 23:44:43,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 23:44:43,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:44:43,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:44:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2086904968, now seen corresponding path program 2 times [2023-01-27 23:44:43,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:44:43,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992777744] [2023-01-27 23:44:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:44:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:44:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:44:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:44:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:44:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992777744] [2023-01-27 23:44:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992777744] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:44:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045337295] [2023-01-27 23:44:43,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:44:43,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:44:43,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:44:43,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:44:43,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 23:44:43,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:44:43,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:44:43,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 23:44:43,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:44:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:44:43,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:44:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:44:43,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045337295] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:44:43,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:44:43,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2023-01-27 23:44:43,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190599847] [2023-01-27 23:44:43,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:44:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 23:44:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:44:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 23:44:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-01-27 23:44:43,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 290 [2023-01-27 23:44:43,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2663 transitions, 50812 flow. Second operand has 19 states, 19 states have (on average 126.3157894736842) internal successors, (2400), 19 states have internal predecessors, (2400), 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 23:44:43,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:44:43,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 290 [2023-01-27 23:44:43,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:45:16,972 INFO L130 PetriNetUnfolder]: 25549/51215 cut-off events. [2023-01-27 23:45:16,972 INFO L131 PetriNetUnfolder]: For 5186118/5186118 co-relation queries the response was YES. [2023-01-27 23:45:17,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687618 conditions, 51215 events. 25549/51215 cut-off events. For 5186118/5186118 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 445105 event pairs, 5809 based on Foata normal form. 185/51278 useless extension candidates. Maximal degree in co-relation 680967. Up to 21499 conditions per place. [2023-01-27 23:45:18,216 INFO L137 encePairwiseOnDemand]: 280/290 looper letters, 1403 selfloop transitions, 2125 changer transitions 16/3544 dead transitions. [2023-01-27 23:45:18,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 3544 transitions, 75695 flow [2023-01-27 23:45:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 23:45:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 23:45:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3140 transitions. [2023-01-27 23:45:18,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511494252873563 [2023-01-27 23:45:18,219 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3140 transitions. [2023-01-27 23:45:18,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3140 transitions. [2023-01-27 23:45:18,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:45:18,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3140 transitions. [2023-01-27 23:45:18,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 130.83333333333334) internal successors, (3140), 24 states have internal predecessors, (3140), 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 23:45:18,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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 23:45:18,226 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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 23:45:18,226 INFO L175 Difference]: Start difference. First operand has 560 places, 2663 transitions, 50812 flow. Second operand 24 states and 3140 transitions. [2023-01-27 23:45:18,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 3544 transitions, 75695 flow [2023-01-27 23:45:39,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 3544 transitions, 71209 flow, removed 2149 selfloop flow, removed 22 redundant places. [2023-01-27 23:45:39,543 INFO L231 Difference]: Finished difference. Result has 566 places, 2931 transitions, 59375 flow [2023-01-27 23:45:39,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=47350, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=59375, PETRI_PLACES=566, PETRI_TRANSITIONS=2931} [2023-01-27 23:45:39,545 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 532 predicate places. [2023-01-27 23:45:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 2931 transitions, 59375 flow [2023-01-27 23:45:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.3157894736842) internal successors, (2400), 19 states have internal predecessors, (2400), 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 23:45:39,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:45:39,545 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2023-01-27 23:45:39,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-27 23:45:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-27 23:45:39,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:45:39,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:45:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash 674057269, now seen corresponding path program 3 times [2023-01-27 23:45:39,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:45:39,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284479732] [2023-01-27 23:45:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:45:39,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:45:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:45:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:45:39,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:45:39,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284479732] [2023-01-27 23:45:39,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284479732] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:45:39,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152416574] [2023-01-27 23:45:39,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:45:39,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:45:39,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:45:39,835 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:45:39,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 23:45:39,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-01-27 23:45:39,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:45:39,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 23:45:39,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:45:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:45:40,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:45:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152416574] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:45:40,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:45:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-01-27 23:45:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401555965] [2023-01-27 23:45:40,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:45:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 23:45:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:45:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 23:45:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-01-27 23:45:40,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-01-27 23:45:40,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 2931 transitions, 59375 flow. Second operand has 8 states, 8 states have (on average 142.5) internal successors, (1140), 8 states have internal predecessors, (1140), 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 23:45:40,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:45:40,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-01-27 23:45:40,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:46:14,419 INFO L130 PetriNetUnfolder]: 24453/49453 cut-off events. [2023-01-27 23:46:14,419 INFO L131 PetriNetUnfolder]: For 4703904/4703941 co-relation queries the response was YES. [2023-01-27 23:46:15,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642398 conditions, 49453 events. 24453/49453 cut-off events. For 4703904/4703941 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 439910 event pairs, 4571 based on Foata normal form. 1450/50868 useless extension candidates. Maximal degree in co-relation 620569. Up to 24291 conditions per place. [2023-01-27 23:46:15,586 INFO L137 encePairwiseOnDemand]: 286/290 looper letters, 1441 selfloop transitions, 13 changer transitions 1820/3577 dead transitions. [2023-01-27 23:46:15,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 3577 transitions, 76979 flow [2023-01-27 23:46:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:46:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:46:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1237 transitions. [2023-01-27 23:46:15,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331896551724138 [2023-01-27 23:46:15,588 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1237 transitions. [2023-01-27 23:46:15,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1237 transitions. [2023-01-27 23:46:15,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:46:15,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1237 transitions. [2023-01-27 23:46:15,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.625) internal successors, (1237), 8 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 23:46:15,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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 23:46:15,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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 23:46:15,591 INFO L175 Difference]: Start difference. First operand has 566 places, 2931 transitions, 59375 flow. Second operand 8 states and 1237 transitions. [2023-01-27 23:46:15,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 3577 transitions, 76979 flow [2023-01-27 23:46:30,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 3577 transitions, 73585 flow, removed 1006 selfloop flow, removed 11 redundant places. [2023-01-27 23:46:30,639 INFO L231 Difference]: Finished difference. Result has 566 places, 1362 transitions, 24020 flow [2023-01-27 23:46:30,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=41819, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24020, PETRI_PLACES=566, PETRI_TRANSITIONS=1362} [2023-01-27 23:46:30,641 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 532 predicate places. [2023-01-27 23:46:30,641 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1362 transitions, 24020 flow [2023-01-27 23:46:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.5) internal successors, (1140), 8 states have internal predecessors, (1140), 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 23:46:30,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:46:30,641 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:46:30,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 23:46:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 23:46:30,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:46:30,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:46:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1429281689, now seen corresponding path program 3 times [2023-01-27 23:46:30,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:46:30,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722289699] [2023-01-27 23:46:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:46:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:46:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:46:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:46:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:46:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722289699] [2023-01-27 23:46:31,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722289699] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:46:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183276648] [2023-01-27 23:46:31,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:46:31,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:46:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:46:31,057 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:46:31,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 23:46:31,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 23:46:31,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:46:31,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 23:46:31,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:46:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 23:46:31,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:46:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-27 23:46:31,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183276648] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:46:31,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:46:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 17 [2023-01-27 23:46:31,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937609871] [2023-01-27 23:46:31,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:46:31,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:46:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:46:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:46:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:46:31,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 290 [2023-01-27 23:46:31,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1362 transitions, 24020 flow. Second operand has 18 states, 18 states have (on average 126.33333333333333) internal successors, (2274), 18 states have internal predecessors, (2274), 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 23:46:31,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:46:31,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 290 [2023-01-27 23:46:31,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:46:43,603 INFO L130 PetriNetUnfolder]: 13067/27104 cut-off events. [2023-01-27 23:46:43,603 INFO L131 PetriNetUnfolder]: For 2756484/2756484 co-relation queries the response was YES. [2023-01-27 23:46:43,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368480 conditions, 27104 events. 13067/27104 cut-off events. For 2756484/2756484 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 226732 event pairs, 2351 based on Foata normal form. 28/27132 useless extension candidates. Maximal degree in co-relation 355048. Up to 12415 conditions per place. [2023-01-27 23:46:44,113 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 828 selfloop transitions, 711 changer transitions 133/1672 dead transitions. [2023-01-27 23:46:44,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 1672 transitions, 32775 flow [2023-01-27 23:46:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 23:46:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 23:46:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2507 transitions. [2023-01-27 23:46:44,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45499092558983667 [2023-01-27 23:46:44,115 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2507 transitions. [2023-01-27 23:46:44,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2507 transitions. [2023-01-27 23:46:44,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:46:44,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2507 transitions. [2023-01-27 23:46:44,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 131.94736842105263) internal successors, (2507), 19 states have internal predecessors, (2507), 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 23:46:44,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 290.0) internal successors, (5800), 20 states have internal predecessors, (5800), 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 23:46:44,120 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 290.0) internal successors, (5800), 20 states have internal predecessors, (5800), 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 23:46:44,120 INFO L175 Difference]: Start difference. First operand has 566 places, 1362 transitions, 24020 flow. Second operand 19 states and 2507 transitions. [2023-01-27 23:46:44,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 1672 transitions, 32775 flow [2023-01-27 23:46:49,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1672 transitions, 29242 flow, removed 631 selfloop flow, removed 39 redundant places. [2023-01-27 23:46:49,478 INFO L231 Difference]: Finished difference. Result has 544 places, 1328 transitions, 21901 flow [2023-01-27 23:46:49,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=20657, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=21901, PETRI_PLACES=544, PETRI_TRANSITIONS=1328} [2023-01-27 23:46:49,480 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 510 predicate places. [2023-01-27 23:46:49,480 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1328 transitions, 21901 flow [2023-01-27 23:46:49,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 126.33333333333333) internal successors, (2274), 18 states have internal predecessors, (2274), 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 23:46:49,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:46:49,480 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:46:49,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-27 23:46:49,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 23:46:49,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:46:49,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:46:49,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1088570660, now seen corresponding path program 3 times [2023-01-27 23:46:49,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:46:49,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296543499] [2023-01-27 23:46:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:46:49,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:46:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:46:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:46:50,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:46:50,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296543499] [2023-01-27 23:46:50,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296543499] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:46:50,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432349474] [2023-01-27 23:46:50,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:46:50,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:46:50,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:46:50,830 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:46:50,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 23:46:51,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 23:46:51,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:46:51,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 93 conjunts are in the unsatisfiable core [2023-01-27 23:46:51,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:46:51,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-27 23:46:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:46:51,676 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 52 treesize of output 38 [2023-01-27 23:46:51,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:46:51,981 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 52 treesize of output 38 [2023-01-27 23:46:52,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 45 [2023-01-27 23:46:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:46:56,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:46:58,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 46 [2023-01-27 23:46:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:46:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432349474] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:46:59,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:46:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 75 [2023-01-27 23:46:59,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525378396] [2023-01-27 23:46:59,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:46:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-01-27 23:46:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:46:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-01-27 23:46:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=5426, Unknown=1, NotChecked=0, Total=5700 [2023-01-27 23:46:59,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-27 23:46:59,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1328 transitions, 21901 flow. Second operand has 76 states, 76 states have (on average 92.01315789473684) internal successors, (6993), 76 states have internal predecessors, (6993), 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 23:46:59,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:46:59,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-27 23:46:59,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:47:54,198 INFO L130 PetriNetUnfolder]: 11344/24846 cut-off events. [2023-01-27 23:47:54,199 INFO L131 PetriNetUnfolder]: For 1519403/1519403 co-relation queries the response was YES. [2023-01-27 23:47:54,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264293 conditions, 24846 events. 11344/24846 cut-off events. For 1519403/1519403 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 213212 event pairs, 1459 based on Foata normal form. 81/24927 useless extension candidates. Maximal degree in co-relation 260742. Up to 10182 conditions per place. [2023-01-27 23:47:54,583 INFO L137 encePairwiseOnDemand]: 274/290 looper letters, 815 selfloop transitions, 1406 changer transitions 628/2849 dead transitions. [2023-01-27 23:47:54,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 2849 transitions, 52746 flow [2023-01-27 23:47:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-01-27 23:47:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2023-01-27 23:47:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 13760 transitions. [2023-01-27 23:47:54,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3272294887039239 [2023-01-27 23:47:54,592 INFO L72 ComplementDD]: Start complementDD. Operand 145 states and 13760 transitions. [2023-01-27 23:47:54,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 13760 transitions. [2023-01-27 23:47:54,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:47:54,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 145 states and 13760 transitions. [2023-01-27 23:47:54,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 146 states, 145 states have (on average 94.89655172413794) internal successors, (13760), 145 states have internal predecessors, (13760), 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 23:47:54,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 146 states, 146 states have (on average 290.0) internal successors, (42340), 146 states have internal predecessors, (42340), 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 23:47:54,627 INFO L81 ComplementDD]: Finished complementDD. Result has 146 states, 146 states have (on average 290.0) internal successors, (42340), 146 states have internal predecessors, (42340), 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 23:47:54,627 INFO L175 Difference]: Start difference. First operand has 544 places, 1328 transitions, 21901 flow. Second operand 145 states and 13760 transitions. [2023-01-27 23:47:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 2849 transitions, 52746 flow [2023-01-27 23:48:00,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 2849 transitions, 50911 flow, removed 146 selfloop flow, removed 19 redundant places. [2023-01-27 23:48:00,555 INFO L231 Difference]: Finished difference. Result has 683 places, 1617 transitions, 27246 flow [2023-01-27 23:48:00,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=20469, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=145, PETRI_FLOW=27246, PETRI_PLACES=683, PETRI_TRANSITIONS=1617} [2023-01-27 23:48:00,556 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 649 predicate places. [2023-01-27 23:48:00,556 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 1617 transitions, 27246 flow [2023-01-27 23:48:00,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 92.01315789473684) internal successors, (6993), 76 states have internal predecessors, (6993), 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 23:48:00,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:48:00,557 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:48:00,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-27 23:48:00,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:48:00,762 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:48:00,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:48:00,762 INFO L85 PathProgramCache]: Analyzing trace with hash -543570794, now seen corresponding path program 4 times [2023-01-27 23:48:00,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:48:00,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251058495] [2023-01-27 23:48:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:48:00,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:48:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:48:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:48:01,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:48:01,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251058495] [2023-01-27 23:48:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251058495] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:48:01,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542176605] [2023-01-27 23:48:01,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:48:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:48:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:48:01,946 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:48:01,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 23:48:02,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:48:02,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:48:02,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 107 conjunts are in the unsatisfiable core [2023-01-27 23:48:02,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:48:02,100 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 23:48:02,100 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 29 treesize of output 34 [2023-01-27 23:48:02,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-27 23:48:02,445 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 43 treesize of output 38 [2023-01-27 23:48:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:48:02,712 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 52 treesize of output 38 [2023-01-27 23:48:03,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:48:03,052 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 52 treesize of output 38 [2023-01-27 23:48:03,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 78 treesize of output 45 [2023-01-27 23:48:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:48:08,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:48:12,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:48:12,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-27 23:48:12,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:48:12,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-27 23:48:12,651 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 28 treesize of output 22 [2023-01-27 23:48:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:48:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542176605] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:48:12,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:48:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 26] total 80 [2023-01-27 23:48:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866378442] [2023-01-27 23:48:12,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:48:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-01-27 23:48:12,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:48:12,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-01-27 23:48:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=6231, Unknown=2, NotChecked=0, Total=6642 [2023-01-27 23:48:12,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-27 23:48:12,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 1617 transitions, 27246 flow. Second operand has 82 states, 82 states have (on average 87.86585365853658) internal successors, (7205), 82 states have internal predecessors, (7205), 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 23:48:12,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:48:12,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-27 23:48:12,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:48:21,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:48:45,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:48:47,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:48:59,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:07,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:10,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:15,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:17,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:19,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:21,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:24,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:27,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:29,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:49:51,636 WARN L222 SmtUtils]: Spent 13.26s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:49:56,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:50:02,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:50:12,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:50:25,798 WARN L222 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 97 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:50:37,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:50:39,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:50:44,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:50:46,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:51:06,857 WARN L222 SmtUtils]: Spent 12.37s on a formula simplification. DAG size of input: 110 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:51:08,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:51:10,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:51:46,661 WARN L222 SmtUtils]: Spent 19.55s on a formula simplification. DAG size of input: 135 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:51:48,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:51:50,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:51:54,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:52:21,266 WARN L222 SmtUtils]: Spent 22.55s on a formula simplification. DAG size of input: 100 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:52:23,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:52:25,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:52:27,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:52:30,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:52:41,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:53:16,852 WARN L222 SmtUtils]: Spent 30.62s on a formula simplification. DAG size of input: 125 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:53:18,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:03,948 WARN L222 SmtUtils]: Spent 29.54s on a formula simplification. DAG size of input: 136 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:54:08,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:23,349 WARN L222 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 97 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:54:50,886 WARN L222 SmtUtils]: Spent 27.01s on a formula simplification. DAG size of input: 127 DAG size of output: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:54:59,065 WARN L222 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 117 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:55:06,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:55:08,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:55:10,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 23:55:12,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:55:14,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:55:16,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:55:20,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:55:29,863 WARN L222 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 123 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-27 23:55:34,078 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 [2023-01-27 23:55:34,078 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:55:34,675 WARN L238 SmtUtils]: Removed 12 from assertion stack [2023-01-27 23:55:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-01-27 23:55:34,676 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 23:55:34,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-27 23:55:34,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-01-27 23:55:34,877 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 148 for 2272ms.. [2023-01-27 23:55:34,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-27 23:55:34,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 23:55:34,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-27 23:55:34,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 23:55:34,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 23:55:34,879 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 1, 1, 1, 1] [2023-01-27 23:55:34,881 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:55:34,881 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:55:34,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:55:34 BasicIcfg [2023-01-27 23:55:34,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:55:34,883 INFO L158 Benchmark]: Toolchain (without parser) took 839822.31ms. Allocated memory was 423.6MB in the beginning and 12.7GB in the end (delta: 12.3GB). Free memory was 377.2MB in the beginning and 9.0GB in the end (delta: -8.6GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-01-27 23:55:34,883 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory was 215.0MB in the beginning and 214.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:55:34,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.74ms. Allocated memory is still 423.6MB. Free memory was 377.2MB in the beginning and 348.0MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-27 23:55:34,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.59ms. Allocated memory is still 423.6MB. Free memory was 348.0MB in the beginning and 345.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:55:34,884 INFO L158 Benchmark]: Boogie Preprocessor took 45.32ms. Allocated memory is still 423.6MB. Free memory was 345.3MB in the beginning and 400.1MB in the end (delta: -54.8MB). Peak memory consumption was 10.0MB. Max. memory is 16.0GB. [2023-01-27 23:55:34,884 INFO L158 Benchmark]: RCFGBuilder took 411.13ms. Allocated memory is still 423.6MB. Free memory was 400.1MB in the beginning and 381.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 23:55:34,884 INFO L158 Benchmark]: TraceAbstraction took 838935.16ms. Allocated memory was 423.6MB in the beginning and 12.7GB in the end (delta: 12.3GB). Free memory was 380.9MB in the beginning and 9.0GB in the end (delta: -8.6GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-01-27 23:55:34,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory was 215.0MB in the beginning and 214.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 393.74ms. Allocated memory is still 423.6MB. Free memory was 377.2MB in the beginning and 348.0MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.59ms. Allocated memory is still 423.6MB. Free memory was 348.0MB in the beginning and 345.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.32ms. Allocated memory is still 423.6MB. Free memory was 345.3MB in the beginning and 400.1MB in the end (delta: -54.8MB). Peak memory consumption was 10.0MB. Max. memory is 16.0GB. * RCFGBuilder took 411.13ms. Allocated memory is still 423.6MB. Free memory was 400.1MB in the beginning and 381.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 838935.16ms. Allocated memory was 423.6MB in the beginning and 12.7GB in the end (delta: 12.3GB). Free memory was 380.9MB in the beginning and 9.0GB in the end (delta: -8.6GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 141 PlacesBefore, 34 PlacesAfterwards, 144 TransitionsBefore, 32 TransitionsAfterwards, 6492 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 5 ChoiceCompositions, 135 TotalNumberOfCompositions, 8991 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6737, independent: 6555, independent conditional: 0, independent unconditional: 6555, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3666, independent: 3614, independent conditional: 0, independent unconditional: 3614, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6737, independent: 2941, independent conditional: 0, independent unconditional: 2941, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 3666, unknown conditional: 0, unknown unconditional: 3666] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 156, Positive conditional cache size: 0, Positive unconditional cache size: 156, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 148 for 2272ms.. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 148 for 2272ms.. - TimeoutResultAtElement [Line: 1023]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 148 for 2272ms.. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 148 for 2272ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 240 locations, 6 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: 838.8s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 777.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 414 mSolverCounterUnknown, 8223 SdHoareTripleChecker+Valid, 135.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8223 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 130.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2245 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 640 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58201 IncrementalHoareTripleChecker+Invalid, 61500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 640 mSolverCounterUnsat, 2 mSDtfsCounter, 58201 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1865 GetRequests, 603 SyntacticMatches, 45 SemanticMatches, 1216 ConstructedPredicates, 4 IntricatePredicates, 7 DeprecatedPredicates, 56241 ImplicationChecksByTransitivity, 461.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59375occurred in iteration=16, InterpolantAutomatonStates: 650, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 53.6s InterpolantComputationTime, 1018 NumberOfCodeBlocks, 1011 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1385 ConstructedInterpolants, 44 QuantifiedInterpolants, 21224 SizeOfPredicates, 243 NumberOfNonLiveVariables, 4072 ConjunctsInSsa, 605 ConjunctsInUnsatCore, 45 InterpolantComputations, 9 PerfectInterpolantSequences, 239/983 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