/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_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:51:37,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:51:37,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:51:37,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:51:37,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:51:37,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:51:37,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:51:37,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:51:37,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:51:37,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:51:37,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:51:37,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:51:37,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:51:37,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:51:37,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:51:37,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:51:37,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:51:37,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:51:37,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:51:37,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:51:37,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:51:37,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:51:37,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:51:37,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:51:37,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:51:37,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:51:37,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:51:37,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:51:37,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:51:37,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 23:51:37,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:51:37,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:51:37,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:51:37,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:51:37,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:51:37,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:51:37,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:51:37,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:51:37,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:51:37,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:51:37,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:51:37,513 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 23:51:37,534 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:51:37,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:51:37,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:51:37,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:51:37,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:51:37,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:51:37,537 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:51:37,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:51:37,537 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:51:37,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:51:37,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:51:37,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:51:37,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:51:37,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:51:37,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:51:37,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:51:37,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:51:37,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:51:37,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:51:37,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:51:37,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:51:37,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:51:37,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:51:37,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:51:37,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:51:37,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:51:37,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:51:37,709 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:51:37,712 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:51:37,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-01-27 23:51:38,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:51:38,874 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:51:38,874 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-01-27 23:51:38,892 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c05a7e94/09a7769b10464f67b50ceb008955fd4a/FLAGe709bf8e8 [2023-01-27 23:51:38,906 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c05a7e94/09a7769b10464f67b50ceb008955fd4a [2023-01-27 23:51:38,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:51:38,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:51:38,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:51:38,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:51:38,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:51:38,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:51:38" (1/1) ... [2023-01-27 23:51:38,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34169899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:38, skipping insertion in model container [2023-01-27 23:51:38,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:51:38" (1/1) ... [2023-01-27 23:51:38,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:51:38,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:51:39,149 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_longer-2.i[41529,41542] [2023-01-27 23:51:39,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:51:39,170 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:51:39,190 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_longer-2.i[41529,41542] [2023-01-27 23:51:39,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:51:39,265 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:51:39,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39 WrapperNode [2023-01-27 23:51:39,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:51:39,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:51:39,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:51:39,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:51:39,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,312 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 149 [2023-01-27 23:51:39,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:51:39,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:51:39,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:51:39,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:51:39,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,351 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:51:39,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:51:39,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:51:39,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:51:39,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (1/1) ... [2023-01-27 23:51:39,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:51:39,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:39,382 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 23:51:39,404 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 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:51:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:51:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:51:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:51:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:51:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:51:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:51:39,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:51:39,420 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 23:51:39,557 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:51:39,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:51:39,735 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:51:39,742 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:51:39,742 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:51:39,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:51:39 BoogieIcfgContainer [2023-01-27 23:51:39,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:51:39,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:51:39,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:51:39,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:51:39,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:51:38" (1/3) ... [2023-01-27 23:51:39,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe3839c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:51:39, skipping insertion in model container [2023-01-27 23:51:39,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:51:39" (2/3) ... [2023-01-27 23:51:39,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe3839c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:51:39, skipping insertion in model container [2023-01-27 23:51:39,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:51:39" (3/3) ... [2023-01-27 23:51:39,751 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-01-27 23:51:39,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:51:39,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:51:39,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:51:39,844 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:51:39,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 151 transitions, 318 flow [2023-01-27 23:51:39,949 INFO L130 PetriNetUnfolder]: 10/149 cut-off events. [2023-01-27 23:51:39,949 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:51:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 10/149 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. 0/137 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-27 23:51:39,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 151 transitions, 318 flow [2023-01-27 23:51:39,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 140 transitions, 289 flow [2023-01-27 23:51:39,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:51:39,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 140 transitions, 289 flow [2023-01-27 23:51:39,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 140 transitions, 289 flow [2023-01-27 23:51:39,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 140 transitions, 289 flow [2023-01-27 23:51:40,025 INFO L130 PetriNetUnfolder]: 10/140 cut-off events. [2023-01-27 23:51:40,026 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:51:40,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 140 events. 10/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 300 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-27 23:51:40,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 6492 [2023-01-27 23:51:42,710 INFO L134 LiptonReduction]: Checked pairs total: 8978 [2023-01-27 23:51:42,710 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-01-27 23:51:42,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:51:42,729 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;@c6255d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:51:42,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 23:51:42,733 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-01-27 23:51:42,733 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:51:42,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:42,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 23:51:42,735 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 23:51:42,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash 920078475, now seen corresponding path program 1 times [2023-01-27 23:51:42,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:42,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456188399] [2023-01-27 23:51:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:42,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:42,970 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 23:51:42,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456188399] [2023-01-27 23:51:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456188399] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:42,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:51:42,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:51:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741369390] [2023-01-27 23:51:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:51:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:51:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:51:43,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2023-01-27 23:51:43,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:51:43,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:43,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2023-01-27 23:51:43,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:43,165 INFO L130 PetriNetUnfolder]: 661/1082 cut-off events. [2023-01-27 23:51:43,165 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-01-27 23:51:43,168 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 4016 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 23:51:43,177 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-01-27 23:51:43,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 227 flow [2023-01-27 23:51:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:51:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:51:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-01-27 23:51:43,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2023-01-27 23:51:43,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-01-27 23:51:43,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-01-27 23:51:43,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:43,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-01-27 23:51:43,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 23:51:43,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:43,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:43,209 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 436 transitions. [2023-01-27 23:51:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 227 flow [2023-01-27 23:51:43,213 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 23:51:43,215 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-01-27 23:51:43,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, 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 23:51:43,219 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-27 23:51:43,219 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-01-27 23:51:43,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:51:43,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:43,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:51:43,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:51:43,220 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 23:51:43,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1451273937, now seen corresponding path program 1 times [2023-01-27 23:51:43,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:43,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289208261] [2023-01-27 23:51:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:43,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:43,304 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 23:51:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:43,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289208261] [2023-01-27 23:51:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289208261] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:51:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:51:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339513010] [2023-01-27 23:51:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:43,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:51:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:51:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:51:43,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 282 [2023-01-27 23:51:43,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 23:51:43,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:43,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 282 [2023-01-27 23:51:43,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:43,432 INFO L130 PetriNetUnfolder]: 593/1022 cut-off events. [2023-01-27 23:51:43,433 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 23:51:43,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 1022 events. 593/1022 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4441 event pairs, 271 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 1916. Up to 877 conditions per place. [2023-01-27 23:51:43,436 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-01-27 23:51:43,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 222 flow [2023-01-27 23:51:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:51:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:51:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-01-27 23:51:43,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2023-01-27 23:51:43,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-01-27 23:51:43,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-01-27 23:51:43,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:43,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-01-27 23:51:43,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 23:51:43,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:43,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:43,441 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 450 transitions. [2023-01-27 23:51:43,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 222 flow [2023-01-27 23:51:43,442 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 23:51:43,442 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-01-27 23:51:43,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, 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 23:51:43,443 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-01-27 23:51:43,443 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-01-27 23:51:43,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 23:51:43,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:43,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:51:43,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:51:43,444 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 23:51:43,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1760034202, now seen corresponding path program 1 times [2023-01-27 23:51:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110345589] [2023-01-27 23:51:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:43,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:43,543 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 23:51:43,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110345589] [2023-01-27 23:51:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110345589] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994059622] [2023-01-27 23:51:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:43,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:43,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:43,546 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 23:51:43,576 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 23:51:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:43,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:51:43,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:51:43,698 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 23:51:43,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:51:43,727 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 23:51:43,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994059622] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:51:43,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:51:43,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-01-27 23:51:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567799121] [2023-01-27 23:51:43,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:51:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:51:43,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:51:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:51:43,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 282 [2023-01-27 23:51:43,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 128.4) internal successors, (1284), 10 states have internal predecessors, (1284), 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 23:51:43,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:43,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 282 [2023-01-27 23:51:43,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:44,088 INFO L130 PetriNetUnfolder]: 1619/2654 cut-off events. [2023-01-27 23:51:44,089 INFO L131 PetriNetUnfolder]: For 839/839 co-relation queries the response was YES. [2023-01-27 23:51:44,091 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 12088 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 23:51:44,100 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions. [2023-01-27 23:51:44,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow [2023-01-27 23:51:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:51:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:51:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1687 transitions. [2023-01-27 23:51:44,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985224586288416 [2023-01-27 23:51:44,103 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1687 transitions. [2023-01-27 23:51:44,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1687 transitions. [2023-01-27 23:51:44,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:44,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1687 transitions. [2023-01-27 23:51:44,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 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 23:51:44,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 282.0) internal successors, (3666), 13 states have internal predecessors, (3666), 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 23:51:44,111 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 282.0) internal successors, (3666), 13 states have internal predecessors, (3666), 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 23:51:44,111 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1687 transitions. [2023-01-27 23:51:44,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow [2023-01-27 23:51:44,117 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 23:51:44,119 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-01-27 23:51:44,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, 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 23:51:44,120 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-01-27 23:51:44,120 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-01-27 23:51:44,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.4) internal successors, (1284), 10 states have internal predecessors, (1284), 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 23:51:44,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:44,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:51:44,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 23:51:44,326 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 23:51:44,327 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 23:51:44,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1018121817, now seen corresponding path program 1 times [2023-01-27 23:51:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495015638] [2023-01-27 23:51:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:44,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:44,388 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 23:51:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495015638] [2023-01-27 23:51:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495015638] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:44,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:51:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:51:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96518692] [2023-01-27 23:51:44,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:44,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:51:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:51:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:51:44,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 282 [2023-01-27 23:51:44,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 23:51:44,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:44,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 282 [2023-01-27 23:51:44,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:44,475 INFO L130 PetriNetUnfolder]: 512/977 cut-off events. [2023-01-27 23:51:44,476 INFO L131 PetriNetUnfolder]: For 557/557 co-relation queries the response was YES. [2023-01-27 23:51:44,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 977 events. 512/977 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4170 event pairs, 98 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 2360. Up to 670 conditions per place. [2023-01-27 23:51:44,484 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 42 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-01-27 23:51:44,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 342 flow [2023-01-27 23:51:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:51:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:51:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-27 23:51:44,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2023-01-27 23:51:44,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-27 23:51:44,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-27 23:51:44,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:44,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-27 23:51:44,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 23:51:44,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:44,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:44,488 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 428 transitions. [2023-01-27 23:51:44,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 342 flow [2023-01-27 23:51:44,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 321 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-27 23:51:44,492 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-01-27 23:51:44,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, 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 23:51:44,492 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-01-27 23:51:44,492 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-01-27 23:51:44,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 23:51:44,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:44,493 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 23:51:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:51:44,493 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 23:51:44,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:44,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1945408692, now seen corresponding path program 1 times [2023-01-27 23:51:44,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:44,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345151620] [2023-01-27 23:51:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:44,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:44,519 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 23:51:44,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345151620] [2023-01-27 23:51:44,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345151620] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:44,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:51:44,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:51:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343324115] [2023-01-27 23:51:44,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:44,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:51:44,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:51:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:51:44,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2023-01-27 23:51:44,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 23:51:44,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:44,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2023-01-27 23:51:44,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:44,615 INFO L130 PetriNetUnfolder]: 624/1145 cut-off events. [2023-01-27 23:51:44,615 INFO L131 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2023-01-27 23:51:44,616 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 4699 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 23:51:44,619 INFO L137 encePairwiseOnDemand]: 276/282 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-01-27 23:51:44,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow [2023-01-27 23:51:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:51:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:51:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-01-27 23:51:44,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-01-27 23:51:44,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-01-27 23:51:44,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-01-27 23:51:44,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:44,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-01-27 23:51:44,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 23:51:44,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:44,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 23:51:44,623 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 432 transitions. [2023-01-27 23:51:44,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow [2023-01-27 23:51:44,625 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 23:51:44,625 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-01-27 23:51:44,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, 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 23:51:44,626 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-27 23:51:44,626 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-01-27 23:51:44,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 23:51:44,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:44,627 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 23:51:44,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:51:44,627 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 23:51:44,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash 498757517, now seen corresponding path program 1 times [2023-01-27 23:51:44,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859603914] [2023-01-27 23:51:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:44,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:45,305 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 23:51:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859603914] [2023-01-27 23:51:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859603914] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:51:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:51:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48916710] [2023-01-27 23:51:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:51:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:51:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:51:45,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:51:45,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 15 states, 15 states have (on average 90.4) internal successors, (1356), 15 states have internal predecessors, (1356), 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 23:51:45,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:45,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:51:45,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:45,968 INFO L130 PetriNetUnfolder]: 922/1693 cut-off events. [2023-01-27 23:51:45,968 INFO L131 PetriNetUnfolder]: For 1064/1064 co-relation queries the response was YES. [2023-01-27 23:51:45,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 1693 events. 922/1693 cut-off events. For 1064/1064 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7829 event pairs, 204 based on Foata normal form. 0/1675 useless extension candidates. Maximal degree in co-relation 2579. Up to 987 conditions per place. [2023-01-27 23:51:45,974 INFO L137 encePairwiseOnDemand]: 266/282 looper letters, 127 selfloop transitions, 28 changer transitions 4/159 dead transitions. [2023-01-27 23:51:45,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 159 transitions, 917 flow [2023-01-27 23:51:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 23:51:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 23:51:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1743 transitions. [2023-01-27 23:51:45,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433806146572104 [2023-01-27 23:51:45,978 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1743 transitions. [2023-01-27 23:51:45,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1743 transitions. [2023-01-27 23:51:45,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:45,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1743 transitions. [2023-01-27 23:51:45,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.83333333333333) internal successors, (1743), 18 states have internal predecessors, (1743), 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 23:51:45,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 282.0) internal successors, (5358), 19 states have internal predecessors, (5358), 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 23:51:45,986 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 282.0) internal successors, (5358), 19 states have internal predecessors, (5358), 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 23:51:45,986 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 18 states and 1743 transitions. [2023-01-27 23:51:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 159 transitions, 917 flow [2023-01-27 23:51:45,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 159 transitions, 879 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-27 23:51:45,991 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 430 flow [2023-01-27 23:51:45,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=430, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2023-01-27 23:51:45,991 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2023-01-27 23:51:45,991 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 430 flow [2023-01-27 23:51:45,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 90.4) internal successors, (1356), 15 states have internal predecessors, (1356), 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 23:51:45,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:45,992 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 23:51:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:51:45,992 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 23:51:45,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2035419291, now seen corresponding path program 2 times [2023-01-27 23:51:45,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:45,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666849110] [2023-01-27 23:51:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:45,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:46,397 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 23:51:46,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:46,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666849110] [2023-01-27 23:51:46,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666849110] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:46,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:51:46,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:51:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871549476] [2023-01-27 23:51:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:51:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:51:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:51:46,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 282 [2023-01-27 23:51:46,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 430 flow. Second operand has 11 states, 11 states have (on average 106.81818181818181) internal successors, (1175), 11 states have internal predecessors, (1175), 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 23:51:46,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:46,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 282 [2023-01-27 23:51:46,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:46,893 INFO L130 PetriNetUnfolder]: 1085/2066 cut-off events. [2023-01-27 23:51:46,893 INFO L131 PetriNetUnfolder]: For 1603/1603 co-relation queries the response was YES. [2023-01-27 23:51:46,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6025 conditions, 2066 events. 1085/2066 cut-off events. For 1603/1603 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10608 event pairs, 295 based on Foata normal form. 0/2039 useless extension candidates. Maximal degree in co-relation 4358. Up to 839 conditions per place. [2023-01-27 23:51:46,901 INFO L137 encePairwiseOnDemand]: 273/282 looper letters, 98 selfloop transitions, 19 changer transitions 13/140 dead transitions. [2023-01-27 23:51:46,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 140 transitions, 942 flow [2023-01-27 23:51:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:51:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:51:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1046 transitions. [2023-01-27 23:51:46,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41213553979511425 [2023-01-27 23:51:46,904 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1046 transitions. [2023-01-27 23:51:46,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1046 transitions. [2023-01-27 23:51:46,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:46,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1046 transitions. [2023-01-27 23:51:46,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 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 23:51:46,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 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 23:51:46,908 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 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 23:51:46,908 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 430 flow. Second operand 9 states and 1046 transitions. [2023-01-27 23:51:46,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 140 transitions, 942 flow [2023-01-27 23:51:46,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 140 transitions, 940 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 23:51:46,915 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 531 flow [2023-01-27 23:51:46,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=531, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2023-01-27 23:51:46,916 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 56 predicate places. [2023-01-27 23:51:46,916 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 531 flow [2023-01-27 23:51:46,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.81818181818181) internal successors, (1175), 11 states have internal predecessors, (1175), 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 23:51:46,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:46,917 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:51:46,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:51:46,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:51:46,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:46,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2064601814, now seen corresponding path program 1 times [2023-01-27 23:51:46,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:46,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432626231] [2023-01-27 23:51:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:46,976 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 23:51:46,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:46,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432626231] [2023-01-27 23:51:46,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432626231] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:46,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510324108] [2023-01-27 23:51:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:46,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:46,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:46,978 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 23:51:46,979 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 23:51:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 23:51:47,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:51:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:51:47,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:51:47,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510324108] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:47,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:51:47,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-01-27 23:51:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128589119] [2023-01-27 23:51:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:47,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:51:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:51:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:51:47,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 282 [2023-01-27 23:51:47,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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 23:51:47,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:47,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 282 [2023-01-27 23:51:47,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:47,307 INFO L130 PetriNetUnfolder]: 1190/2211 cut-off events. [2023-01-27 23:51:47,308 INFO L131 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2023-01-27 23:51:47,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 2211 events. 1190/2211 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10864 event pairs, 490 based on Foata normal form. 34/2225 useless extension candidates. Maximal degree in co-relation 5082. Up to 933 conditions per place. [2023-01-27 23:51:47,317 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 109 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2023-01-27 23:51:47,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 1012 flow [2023-01-27 23:51:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:51:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:51:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-01-27 23:51:47,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2023-01-27 23:51:47,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-01-27 23:51:47,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-01-27 23:51:47,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:47,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-01-27 23:51:47,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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 23:51:47,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 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 23:51:47,322 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 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 23:51:47,322 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 531 flow. Second operand 6 states and 822 transitions. [2023-01-27 23:51:47,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 1012 flow [2023-01-27 23:51:47,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 985 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-27 23:51:47,330 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 640 flow [2023-01-27 23:51:47,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-01-27 23:51:47,331 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 61 predicate places. [2023-01-27 23:51:47,331 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 640 flow [2023-01-27 23:51:47,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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 23:51:47,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:47,332 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-01-27 23:51:47,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 23:51:47,536 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,SelfDestructingSolverStorable7 [2023-01-27 23:51:47,537 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 23:51:47,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1688431302, now seen corresponding path program 2 times [2023-01-27 23:51:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:47,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359340845] [2023-01-27 23:51:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:47,710 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 23:51:47,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:47,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359340845] [2023-01-27 23:51:47,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359340845] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:47,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905934024] [2023-01-27 23:51:47,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:51:47,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:47,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:47,712 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 23:51:47,730 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 23:51:47,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:51:47,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:51:47,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:51:47,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:51:47,868 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 23:51:47,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:51:47,930 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 23:51:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905934024] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:51:47,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:51:47,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-01-27 23:51:47,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563411768] [2023-01-27 23:51:47,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:51:47,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:51:47,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:51:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:51:47,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 282 [2023-01-27 23:51:47,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 640 flow. Second operand has 20 states, 20 states have (on average 123.3) internal successors, (2466), 20 states have internal predecessors, (2466), 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 23:51:47,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:47,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 282 [2023-01-27 23:51:47,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:48,464 INFO L130 PetriNetUnfolder]: 1638/3035 cut-off events. [2023-01-27 23:51:48,464 INFO L131 PetriNetUnfolder]: For 4373/4373 co-relation queries the response was YES. [2023-01-27 23:51:48,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9745 conditions, 3035 events. 1638/3035 cut-off events. For 4373/4373 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 14000 event pairs, 350 based on Foata normal form. 32/3047 useless extension candidates. Maximal degree in co-relation 8269. Up to 936 conditions per place. [2023-01-27 23:51:48,480 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 219 selfloop transitions, 50 changer transitions 6/275 dead transitions. [2023-01-27 23:51:48,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 275 transitions, 2035 flow [2023-01-27 23:51:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 23:51:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 23:51:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2760 transitions. [2023-01-27 23:51:48,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46605876393110435 [2023-01-27 23:51:48,485 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2760 transitions. [2023-01-27 23:51:48,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2760 transitions. [2023-01-27 23:51:48,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:48,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2760 transitions. [2023-01-27 23:51:48,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 131.42857142857142) internal successors, (2760), 21 states have internal predecessors, (2760), 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 23:51:48,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 282.0) internal successors, (6204), 22 states have internal predecessors, (6204), 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 23:51:48,496 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 282.0) internal successors, (6204), 22 states have internal predecessors, (6204), 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 23:51:48,496 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 640 flow. Second operand 21 states and 2760 transitions. [2023-01-27 23:51:48,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 275 transitions, 2035 flow [2023-01-27 23:51:48,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 275 transitions, 2019 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-01-27 23:51:48,511 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 1041 flow [2023-01-27 23:51:48,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1041, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2023-01-27 23:51:48,511 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 91 predicate places. [2023-01-27 23:51:48,511 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 1041 flow [2023-01-27 23:51:48,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 123.3) internal successors, (2466), 20 states have internal predecessors, (2466), 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 23:51:48,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:48,513 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 23:51:48,523 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 23:51:48,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:48,718 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 23:51:48,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash 878136134, now seen corresponding path program 3 times [2023-01-27 23:51:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:48,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090332551] [2023-01-27 23:51:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:48,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:49,327 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 23:51:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090332551] [2023-01-27 23:51:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090332551] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480462071] [2023-01-27 23:51:49,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:51:49,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:49,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:49,329 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 23:51:49,368 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 23:51:49,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 23:51:49,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:51:49,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-27 23:51:49,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:51:49,609 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 19 treesize of output 15 [2023-01-27 23:51:49,966 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 107 treesize of output 43 [2023-01-27 23:51:50,059 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 23:51:50,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:51:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480462071] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:51:50,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:51:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 28 [2023-01-27 23:51:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583142317] [2023-01-27 23:51:50,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:50,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:51:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:51:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2023-01-27 23:51:50,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:51:50,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 1041 flow. Second operand has 15 states, 15 states have (on average 90.86666666666666) internal successors, (1363), 15 states have internal predecessors, (1363), 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 23:51:50,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:50,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:51:50,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:52,398 INFO L130 PetriNetUnfolder]: 2736/5048 cut-off events. [2023-01-27 23:51:52,399 INFO L131 PetriNetUnfolder]: For 11952/11952 co-relation queries the response was YES. [2023-01-27 23:51:52,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18064 conditions, 5048 events. 2736/5048 cut-off events. For 11952/11952 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 26507 event pairs, 627 based on Foata normal form. 0/5023 useless extension candidates. Maximal degree in co-relation 16351. Up to 1610 conditions per place. [2023-01-27 23:51:52,428 INFO L137 encePairwiseOnDemand]: 264/282 looper letters, 162 selfloop transitions, 134 changer transitions 4/300 dead transitions. [2023-01-27 23:51:52,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 300 transitions, 2864 flow [2023-01-27 23:51:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 23:51:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 23:51:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2566 transitions. [2023-01-27 23:51:52,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33701076963488313 [2023-01-27 23:51:52,433 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2566 transitions. [2023-01-27 23:51:52,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2566 transitions. [2023-01-27 23:51:52,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:52,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2566 transitions. [2023-01-27 23:51:52,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 95.03703703703704) internal successors, (2566), 27 states have internal predecessors, (2566), 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 23:51:52,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 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 23:51:52,448 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 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 23:51:52,448 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 1041 flow. Second operand 27 states and 2566 transitions. [2023-01-27 23:51:52,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 300 transitions, 2864 flow [2023-01-27 23:51:52,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 300 transitions, 2609 flow, removed 92 selfloop flow, removed 8 redundant places. [2023-01-27 23:51:52,489 INFO L231 Difference]: Finished difference. Result has 149 places, 194 transitions, 2037 flow [2023-01-27 23:51:52,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2037, PETRI_PLACES=149, PETRI_TRANSITIONS=194} [2023-01-27 23:51:52,490 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 115 predicate places. [2023-01-27 23:51:52,490 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 194 transitions, 2037 flow [2023-01-27 23:51:52,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 90.86666666666666) internal successors, (1363), 15 states have internal predecessors, (1363), 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 23:51:52,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:52,494 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 23:51:52,499 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 23:51:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:52,696 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 23:51:52,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1408716722, now seen corresponding path program 4 times [2023-01-27 23:51:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895022609] [2023-01-27 23:51:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:53,995 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 23:51:53,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:53,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895022609] [2023-01-27 23:51:53,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895022609] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:53,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537822820] [2023-01-27 23:51:53,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:51:53,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:53,996 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 23:51:53,998 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 23:51:54,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:51:54,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:51:54,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 70 conjunts are in the unsatisfiable core [2023-01-27 23:51:54,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:51:54,099 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:51:54,099 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 23:51:54,414 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 15 treesize of output 11 [2023-01-27 23:51:54,603 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 40 treesize of output 36 [2023-01-27 23:51:54,995 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 75 treesize of output 43 [2023-01-27 23:51:55,089 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 23:51:55,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:51:55,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:51:55,713 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 23:51:55,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:51:55,727 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 23:51:55,732 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 23:51:55,954 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 23:51:55,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537822820] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:55,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:51:55,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20, 16] total 50 [2023-01-27 23:51:55,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130534831] [2023-01-27 23:51:55,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:51:55,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:51:55,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:51:55,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:51:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2401, Unknown=25, NotChecked=0, Total=2652 [2023-01-27 23:51:55,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:51:55,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 194 transitions, 2037 flow. Second operand has 16 states, 16 states have (on average 86.75) internal successors, (1388), 16 states have internal predecessors, (1388), 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 23:51:55,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:51:55,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:51:55,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:51:59,360 INFO L130 PetriNetUnfolder]: 3202/5913 cut-off events. [2023-01-27 23:51:59,360 INFO L131 PetriNetUnfolder]: For 14406/14406 co-relation queries the response was YES. [2023-01-27 23:51:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22471 conditions, 5913 events. 3202/5913 cut-off events. For 14406/14406 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 31910 event pairs, 309 based on Foata normal form. 0/5880 useless extension candidates. Maximal degree in co-relation 20281. Up to 1966 conditions per place. [2023-01-27 23:51:59,392 INFO L137 encePairwiseOnDemand]: 259/282 looper letters, 136 selfloop transitions, 197 changer transitions 3/336 dead transitions. [2023-01-27 23:51:59,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 336 transitions, 3452 flow [2023-01-27 23:51:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-27 23:51:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-27 23:51:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2548 transitions. [2023-01-27 23:51:59,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32269503546099293 [2023-01-27 23:51:59,397 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2548 transitions. [2023-01-27 23:51:59,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2548 transitions. [2023-01-27 23:51:59,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:51:59,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2548 transitions. [2023-01-27 23:51:59,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 91.0) internal successors, (2548), 28 states have internal predecessors, (2548), 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 23:51:59,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 282.0) internal successors, (8178), 29 states have internal predecessors, (8178), 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 23:51:59,408 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 282.0) internal successors, (8178), 29 states have internal predecessors, (8178), 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 23:51:59,408 INFO L175 Difference]: Start difference. First operand has 149 places, 194 transitions, 2037 flow. Second operand 28 states and 2548 transitions. [2023-01-27 23:51:59,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 336 transitions, 3452 flow [2023-01-27 23:51:59,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 336 transitions, 3283 flow, removed 42 selfloop flow, removed 11 redundant places. [2023-01-27 23:51:59,479 INFO L231 Difference]: Finished difference. Result has 173 places, 242 transitions, 2933 flow [2023-01-27 23:51:59,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2933, PETRI_PLACES=173, PETRI_TRANSITIONS=242} [2023-01-27 23:51:59,479 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 139 predicate places. [2023-01-27 23:51:59,479 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 242 transitions, 2933 flow [2023-01-27 23:51:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.75) internal successors, (1388), 16 states have internal predecessors, (1388), 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 23:51:59,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:51:59,480 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 23:51:59,487 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 23:51:59,685 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,SelfDestructingSolverStorable10 [2023-01-27 23:51:59,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:51:59,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:51:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1099598735, now seen corresponding path program 2 times [2023-01-27 23:51:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:51:59,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334807308] [2023-01-27 23:51:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:51:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:51:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:51:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:51:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:51:59,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334807308] [2023-01-27 23:51:59,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334807308] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:51:59,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619981080] [2023-01-27 23:51:59,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:51:59,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:51:59,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:51:59,819 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 23:51:59,821 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 23:51:59,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:51:59,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:51:59,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:51:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:51:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:51:59,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:52:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619981080] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:00,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:00,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-01-27 23:52:00,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147388976] [2023-01-27 23:52:00,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:00,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 23:52:00,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 23:52:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-01-27 23:52:00,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 282 [2023-01-27 23:52:00,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 242 transitions, 2933 flow. Second operand has 17 states, 17 states have (on average 122.29411764705883) internal successors, (2079), 17 states have internal predecessors, (2079), 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 23:52:00,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:00,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 282 [2023-01-27 23:52:00,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:01,022 INFO L130 PetriNetUnfolder]: 3392/6280 cut-off events. [2023-01-27 23:52:01,022 INFO L131 PetriNetUnfolder]: For 24441/24441 co-relation queries the response was YES. [2023-01-27 23:52:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30437 conditions, 6280 events. 3392/6280 cut-off events. For 24441/24441 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 34239 event pairs, 802 based on Foata normal form. 32/6285 useless extension candidates. Maximal degree in co-relation 27332. Up to 2585 conditions per place. [2023-01-27 23:52:01,063 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 260 selfloop transitions, 159 changer transitions 6/425 dead transitions. [2023-01-27 23:52:01,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 425 transitions, 5136 flow [2023-01-27 23:52:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 23:52:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 23:52:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2537 transitions. [2023-01-27 23:52:01,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449822695035461 [2023-01-27 23:52:01,066 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2537 transitions. [2023-01-27 23:52:01,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2537 transitions. [2023-01-27 23:52:01,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:01,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2537 transitions. [2023-01-27 23:52:01,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 126.85) internal successors, (2537), 20 states have internal predecessors, (2537), 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 23:52:01,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 282.0) internal successors, (5922), 21 states have internal predecessors, (5922), 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 23:52:01,073 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 282.0) internal successors, (5922), 21 states have internal predecessors, (5922), 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 23:52:01,073 INFO L175 Difference]: Start difference. First operand has 173 places, 242 transitions, 2933 flow. Second operand 20 states and 2537 transitions. [2023-01-27 23:52:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 425 transitions, 5136 flow [2023-01-27 23:52:01,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 425 transitions, 4862 flow, removed 85 selfloop flow, removed 8 redundant places. [2023-01-27 23:52:01,185 INFO L231 Difference]: Finished difference. Result has 189 places, 260 transitions, 3410 flow [2023-01-27 23:52:01,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3410, PETRI_PLACES=189, PETRI_TRANSITIONS=260} [2023-01-27 23:52:01,186 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 155 predicate places. [2023-01-27 23:52:01,186 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 260 transitions, 3410 flow [2023-01-27 23:52:01,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 122.29411764705883) internal successors, (2079), 17 states have internal predecessors, (2079), 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 23:52:01,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:01,186 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 23:52:01,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 23:52:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:01,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:01,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1587861155, now seen corresponding path program 1 times [2023-01-27 23:52:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:01,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014017992] [2023-01-27 23:52:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:02,119 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 23:52:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:02,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014017992] [2023-01-27 23:52:02,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014017992] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:02,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354355440] [2023-01-27 23:52:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:02,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:02,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:02,120 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 23:52:02,121 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 23:52:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:02,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 71 conjunts are in the unsatisfiable core [2023-01-27 23:52:02,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:02,359 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 19 treesize of output 15 [2023-01-27 23:52:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:52:02,630 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 69 treesize of output 41 [2023-01-27 23:52:03,055 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 107 treesize of output 43 [2023-01-27 23:52:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:03,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:04,726 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 23:52:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354355440] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:04,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:04,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-01-27 23:52:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925355095] [2023-01-27 23:52:04,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-01-27 23:52:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-01-27 23:52:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3119, Unknown=0, NotChecked=0, Total=3306 [2023-01-27 23:52:04,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:52:04,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 260 transitions, 3410 flow. Second operand has 58 states, 58 states have (on average 90.86206896551724) internal successors, (5270), 58 states have internal predecessors, (5270), 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 23:52:04,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:04,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:52:04,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:23,240 INFO L130 PetriNetUnfolder]: 6989/12941 cut-off events. [2023-01-27 23:52:23,241 INFO L131 PetriNetUnfolder]: For 53608/53608 co-relation queries the response was YES. [2023-01-27 23:52:23,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65025 conditions, 12941 events. 6989/12941 cut-off events. For 53608/53608 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 83819 event pairs, 1020 based on Foata normal form. 0/12896 useless extension candidates. Maximal degree in co-relation 60718. Up to 5237 conditions per place. [2023-01-27 23:52:23,317 INFO L137 encePairwiseOnDemand]: 264/282 looper letters, 477 selfloop transitions, 436 changer transitions 16/929 dead transitions. [2023-01-27 23:52:23,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 929 transitions, 11626 flow [2023-01-27 23:52:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-01-27 23:52:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-01-27 23:52:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 8324 transitions. [2023-01-27 23:52:23,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3354287556415216 [2023-01-27 23:52:23,327 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 8324 transitions. [2023-01-27 23:52:23,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 8324 transitions. [2023-01-27 23:52:23,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:23,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 8324 transitions. [2023-01-27 23:52:23,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 94.5909090909091) internal successors, (8324), 88 states have internal predecessors, (8324), 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 23:52:23,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 282.0) internal successors, (25098), 89 states have internal predecessors, (25098), 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 23:52:23,364 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 282.0) internal successors, (25098), 89 states have internal predecessors, (25098), 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 23:52:23,364 INFO L175 Difference]: Start difference. First operand has 189 places, 260 transitions, 3410 flow. Second operand 88 states and 8324 transitions. [2023-01-27 23:52:23,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 929 transitions, 11626 flow [2023-01-27 23:52:23,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 929 transitions, 11133 flow, removed 119 selfloop flow, removed 8 redundant places. [2023-01-27 23:52:23,689 INFO L231 Difference]: Finished difference. Result has 273 places, 523 transitions, 7688 flow [2023-01-27 23:52:23,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=7688, PETRI_PLACES=273, PETRI_TRANSITIONS=523} [2023-01-27 23:52:23,689 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 239 predicate places. [2023-01-27 23:52:23,689 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 523 transitions, 7688 flow [2023-01-27 23:52:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 90.86206896551724) internal successors, (5270), 58 states have internal predecessors, (5270), 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 23:52:23,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:23,691 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 23:52:23,698 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 23:52:23,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:23,896 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 23:52:23,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash -765198685, now seen corresponding path program 2 times [2023-01-27 23:52:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:23,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081649204] [2023-01-27 23:52:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:25,384 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 23:52:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:25,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081649204] [2023-01-27 23:52:25,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081649204] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:25,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68009965] [2023-01-27 23:52:25,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:52:25,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:25,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:25,386 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 23:52:25,389 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 23:52:25,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:52:25,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:52:25,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 93 conjunts are in the unsatisfiable core [2023-01-27 23:52:25,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:25,611 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:52:25,611 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 23:52:25,869 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 15 treesize of output 11 [2023-01-27 23:52:25,922 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 40 treesize of output 36 [2023-01-27 23:52:26,285 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-01-27 23:52:26,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 53 treesize of output 48 [2023-01-27 23:52:26,928 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 75 treesize of output 43 [2023-01-27 23:52:26,998 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 23:52:26,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:27,911 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_591 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_591) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-27 23:52:27,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:52:27,917 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 23:52:27,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:52:27,923 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 23:52:27,926 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 23:52:28,174 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 23:52:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68009965] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:28,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:28,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 19] total 60 [2023-01-27 23:52:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634530531] [2023-01-27 23:52:28,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-01-27 23:52:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-01-27 23:52:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3331, Unknown=1, NotChecked=118, Total=3782 [2023-01-27 23:52:28,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:52:28,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 523 transitions, 7688 flow. Second operand has 62 states, 62 states have (on average 86.74193548387096) internal successors, (5378), 62 states have internal predecessors, (5378), 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 23:52:28,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:28,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:52:28,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:03,376 INFO L130 PetriNetUnfolder]: 13439/25233 cut-off events. [2023-01-27 23:54:03,377 INFO L131 PetriNetUnfolder]: For 122192/122192 co-relation queries the response was YES. [2023-01-27 23:54:03,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132630 conditions, 25233 events. 13439/25233 cut-off events. For 122192/122192 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 187143 event pairs, 1201 based on Foata normal form. 266/25445 useless extension candidates. Maximal degree in co-relation 114476. Up to 10143 conditions per place. [2023-01-27 23:54:03,641 INFO L137 encePairwiseOnDemand]: 260/282 looper letters, 616 selfloop transitions, 1254 changer transitions 174/2044 dead transitions. [2023-01-27 23:54:03,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 2044 transitions, 26923 flow [2023-01-27 23:54:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-01-27 23:54:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2023-01-27 23:54:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 17062 transitions. [2023-01-27 23:54:03,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32012458253593007 [2023-01-27 23:54:03,661 INFO L72 ComplementDD]: Start complementDD. Operand 189 states and 17062 transitions. [2023-01-27 23:54:03,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 17062 transitions. [2023-01-27 23:54:03,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:03,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 189 states and 17062 transitions. [2023-01-27 23:54:03,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 190 states, 189 states have (on average 90.27513227513228) internal successors, (17062), 189 states have internal predecessors, (17062), 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 23:54:03,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 190 states, 190 states have (on average 282.0) internal successors, (53580), 190 states have internal predecessors, (53580), 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 23:54:03,725 INFO L81 ComplementDD]: Finished complementDD. Result has 190 states, 190 states have (on average 282.0) internal successors, (53580), 190 states have internal predecessors, (53580), 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 23:54:03,725 INFO L175 Difference]: Start difference. First operand has 273 places, 523 transitions, 7688 flow. Second operand 189 states and 17062 transitions. [2023-01-27 23:54:03,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 2044 transitions, 26923 flow [2023-01-27 23:54:04,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 2044 transitions, 25246 flow, removed 318 selfloop flow, removed 24 redundant places. [2023-01-27 23:54:04,304 INFO L231 Difference]: Finished difference. Result has 468 places, 1342 transitions, 20851 flow [2023-01-27 23:54:04,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=6968, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=189, PETRI_FLOW=20851, PETRI_PLACES=468, PETRI_TRANSITIONS=1342} [2023-01-27 23:54:04,305 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 434 predicate places. [2023-01-27 23:54:04,305 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1342 transitions, 20851 flow [2023-01-27 23:54:04,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 86.74193548387096) internal successors, (5378), 62 states have internal predecessors, (5378), 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 23:54:04,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:04,306 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 23:54:04,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 23:54:04,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-27 23:54:04,506 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 23:54:04,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1473877307, now seen corresponding path program 3 times [2023-01-27 23:54:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255255208] [2023-01-27 23:54:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:05,850 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 23:54:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255255208] [2023-01-27 23:54:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255255208] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:54:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685803028] [2023-01-27 23:54:05,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:54:05,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:54:05,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:54:05,852 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 23:54:05,854 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 23:54:06,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 23:54:06,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:54:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 91 conjunts are in the unsatisfiable core [2023-01-27 23:54:06,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:54:06,090 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 23:54:06,090 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 23:54:06,178 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 23:54:06,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:54:06,424 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 23:54:06,440 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 23:54:06,976 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 23:54:07,038 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 23:54:07,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:54:12,497 INFO L321 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2023-01-27 23:54:12,497 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 2 case distinctions, treesize of input 53 treesize of output 60 [2023-01-27 23:54:12,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:54:12,507 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 67 treesize of output 70 [2023-01-27 23:54:12,512 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 23:54:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:16,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685803028] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:54:16,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:54:16,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 60 [2023-01-27 23:54:16,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137454002] [2023-01-27 23:54:16,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:54:16,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-01-27 23:54:16,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:16,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-01-27 23:54:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=3467, Unknown=41, NotChecked=0, Total=3782 [2023-01-27 23:54:16,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:54:16,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1342 transitions, 20851 flow. Second operand has 62 states, 62 states have (on average 86.61290322580645) internal successors, (5370), 62 states have internal predecessors, (5370), 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 23:54:16,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:16,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:54:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:55:15,935 INFO L130 PetriNetUnfolder]: 21066/39747 cut-off events. [2023-01-27 23:55:15,936 INFO L131 PetriNetUnfolder]: For 1257724/1257724 co-relation queries the response was YES. [2023-01-27 23:55:16,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361364 conditions, 39747 events. 21066/39747 cut-off events. For 1257724/1257724 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 316507 event pairs, 2268 based on Foata normal form. 144/39780 useless extension candidates. Maximal degree in co-relation 332428. Up to 15641 conditions per place. [2023-01-27 23:55:16,488 INFO L137 encePairwiseOnDemand]: 256/282 looper letters, 562 selfloop transitions, 2212 changer transitions 75/2849 dead transitions. [2023-01-27 23:55:16,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 2849 transitions, 50387 flow [2023-01-27 23:55:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-01-27 23:55:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2023-01-27 23:55:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 13399 transitions. [2023-01-27 23:55:16,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3188871436051216 [2023-01-27 23:55:16,498 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 13399 transitions. [2023-01-27 23:55:16,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 13399 transitions. [2023-01-27 23:55:16,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:55:16,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 13399 transitions. [2023-01-27 23:55:16,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 150 states, 149 states have (on average 89.9261744966443) internal successors, (13399), 149 states have internal predecessors, (13399), 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 23:55:16,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 150 states, 150 states have (on average 282.0) internal successors, (42300), 150 states have internal predecessors, (42300), 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 23:55:16,539 INFO L81 ComplementDD]: Finished complementDD. Result has 150 states, 150 states have (on average 282.0) internal successors, (42300), 150 states have internal predecessors, (42300), 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 23:55:16,539 INFO L175 Difference]: Start difference. First operand has 468 places, 1342 transitions, 20851 flow. Second operand 149 states and 13399 transitions. [2023-01-27 23:55:16,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 2849 transitions, 50387 flow [2023-01-27 23:55:20,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 2849 transitions, 47168 flow, removed 740 selfloop flow, removed 18 redundant places. [2023-01-27 23:55:20,082 INFO L231 Difference]: Finished difference. Result has 632 places, 2353 transitions, 39813 flow [2023-01-27 23:55:20,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=19143, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=149, PETRI_FLOW=39813, PETRI_PLACES=632, PETRI_TRANSITIONS=2353} [2023-01-27 23:55:20,084 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 598 predicate places. [2023-01-27 23:55:20,084 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 2353 transitions, 39813 flow [2023-01-27 23:55:20,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 86.61290322580645) internal successors, (5370), 62 states have internal predecessors, (5370), 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 23:55:20,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:55:20,085 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 23:55:20,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 23:55:20,288 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,SelfDestructingSolverStorable14 [2023-01-27 23:55:20,289 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 23:55:20,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:55:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash 302218779, now seen corresponding path program 3 times [2023-01-27 23:55:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:55:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286200595] [2023-01-27 23:55:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:55:20,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:55:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:55:20,574 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 23:55:20,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:55:20,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286200595] [2023-01-27 23:55:20,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286200595] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:55:20,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560879427] [2023-01-27 23:55:20,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:55:20,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:55:20,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:55:20,576 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 23:55:20,578 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 23:55:20,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 23:55:20,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:55:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 23:55:20,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:55:20,853 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 23:55:20,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:55:20,993 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 23:55:20,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560879427] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:55:20,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:55:20,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2023-01-27 23:55:20,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694324338] [2023-01-27 23:55:20,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:55:20,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 23:55:20,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:55:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 23:55:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-01-27 23:55:20,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 282 [2023-01-27 23:55:20,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 2353 transitions, 39813 flow. Second operand has 22 states, 22 states have (on average 122.13636363636364) internal successors, (2687), 22 states have internal predecessors, (2687), 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 23:55:20,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:55:20,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 282 [2023-01-27 23:55:20,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:55:43,314 INFO L130 PetriNetUnfolder]: 25191/47609 cut-off events. [2023-01-27 23:55:43,315 INFO L131 PetriNetUnfolder]: For 2617126/2617126 co-relation queries the response was YES. [2023-01-27 23:55:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516982 conditions, 47609 events. 25191/47609 cut-off events. For 2617126/2617126 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 381276 event pairs, 6550 based on Foata normal form. 72/47581 useless extension candidates. Maximal degree in co-relation 516248. Up to 16982 conditions per place. [2023-01-27 23:55:44,307 INFO L137 encePairwiseOnDemand]: 273/282 looper letters, 2634 selfloop transitions, 1444 changer transitions 13/4091 dead transitions. [2023-01-27 23:55:44,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 4091 transitions, 73733 flow [2023-01-27 23:55:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 23:55:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 23:55:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3458 transitions. [2023-01-27 23:55:44,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416338324139743 [2023-01-27 23:55:44,310 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3458 transitions. [2023-01-27 23:55:44,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3458 transitions. [2023-01-27 23:55:44,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:55:44,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3458 transitions. [2023-01-27 23:55:44,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 128.07407407407408) internal successors, (3458), 27 states have internal predecessors, (3458), 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 23:55:44,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 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 23:55:44,319 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 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 23:55:44,319 INFO L175 Difference]: Start difference. First operand has 632 places, 2353 transitions, 39813 flow. Second operand 27 states and 3458 transitions. [2023-01-27 23:55:44,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 4091 transitions, 73733 flow [2023-01-27 23:55:51,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 4091 transitions, 69475 flow, removed 1013 selfloop flow, removed 20 redundant places. [2023-01-27 23:55:51,310 INFO L231 Difference]: Finished difference. Result has 648 places, 2622 transitions, 46579 flow [2023-01-27 23:55:51,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=36947, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1013, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=46579, PETRI_PLACES=648, PETRI_TRANSITIONS=2622} [2023-01-27 23:55:51,312 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 614 predicate places. [2023-01-27 23:55:51,312 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 2622 transitions, 46579 flow [2023-01-27 23:55:51,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 122.13636363636364) internal successors, (2687), 22 states have internal predecessors, (2687), 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 23:55:51,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:55:51,312 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 23:55:51,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-27 23:55:51,517 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,SelfDestructingSolverStorable15 [2023-01-27 23:55:51,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:55:51,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:55:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1841042545, now seen corresponding path program 4 times [2023-01-27 23:55:51,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:55:51,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611659690] [2023-01-27 23:55:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:55:51,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:55:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:55:53,059 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 23:55:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:55:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611659690] [2023-01-27 23:55:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611659690] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:55:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247111064] [2023-01-27 23:55:53,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:55:53,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:55:53,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:55:53,060 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 23:55:53,061 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 23:55:53,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:55:53,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:55:53,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 101 conjunts are in the unsatisfiable core [2023-01-27 23:55:53,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:55:53,385 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 19 treesize of output 15 [2023-01-27 23:55:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:55:53,758 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 69 treesize of output 41 [2023-01-27 23:55:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:55:54,126 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 69 treesize of output 41 [2023-01-27 23:55:55,055 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 107 treesize of output 43 [2023-01-27 23:55:55,147 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 23:55:55,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:55:57,809 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 23:55:58,062 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 23:55:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247111064] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:55:58,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:55:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 25] total 81 [2023-01-27 23:55:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950161960] [2023-01-27 23:55:58,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:55:58,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-01-27 23:55:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:55:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-01-27 23:55:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=6333, Unknown=0, NotChecked=0, Total=6642 [2023-01-27 23:55:58,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:55:58,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 2622 transitions, 46579 flow. Second operand has 82 states, 82 states have (on average 90.86585365853658) internal successors, (7451), 82 states have internal predecessors, (7451), 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 23:55:58,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:55:58,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:55:58,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:58:51,248 INFO L130 PetriNetUnfolder]: 42110/79590 cut-off events. [2023-01-27 23:58:51,248 INFO L131 PetriNetUnfolder]: For 4503076/4503076 co-relation queries the response was YES. [2023-01-27 23:58:52,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874961 conditions, 79590 events. 42110/79590 cut-off events. For 4503076/4503076 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 693355 event pairs, 5179 based on Foata normal form. 48/79471 useless extension candidates. Maximal degree in co-relation 852027. Up to 28059 conditions per place. [2023-01-27 23:58:53,055 INFO L137 encePairwiseOnDemand]: 263/282 looper letters, 1994 selfloop transitions, 3977 changer transitions 221/6192 dead transitions. [2023-01-27 23:58:53,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1022 places, 6192 transitions, 126434 flow [2023-01-27 23:58:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 375 states. [2023-01-27 23:58:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2023-01-27 23:58:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 35298 transitions. [2023-01-27 23:58:53,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33378723404255317 [2023-01-27 23:58:53,076 INFO L72 ComplementDD]: Start complementDD. Operand 375 states and 35298 transitions. [2023-01-27 23:58:53,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 375 states and 35298 transitions. [2023-01-27 23:58:53,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:58:53,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 375 states and 35298 transitions. [2023-01-27 23:58:53,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 376 states, 375 states have (on average 94.128) internal successors, (35298), 375 states have internal predecessors, (35298), 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 23:58:53,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 376 states, 376 states have (on average 282.0) internal successors, (106032), 376 states have internal predecessors, (106032), 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 23:58:53,187 INFO L81 ComplementDD]: Finished complementDD. Result has 376 states, 376 states have (on average 282.0) internal successors, (106032), 376 states have internal predecessors, (106032), 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 23:58:53,187 INFO L175 Difference]: Start difference. First operand has 648 places, 2622 transitions, 46579 flow. Second operand 375 states and 35298 transitions. [2023-01-27 23:58:53,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1022 places, 6192 transitions, 126434 flow [2023-01-27 23:59:09,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1013 places, 6192 transitions, 124244 flow, removed 352 selfloop flow, removed 9 redundant places. [2023-01-27 23:59:09,704 INFO L231 Difference]: Finished difference. Result has 1040 places, 4435 transitions, 87470 flow [2023-01-27 23:59:09,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=45489, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=375, PETRI_FLOW=87470, PETRI_PLACES=1040, PETRI_TRANSITIONS=4435} [2023-01-27 23:59:09,707 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1006 predicate places. [2023-01-27 23:59:09,707 INFO L495 AbstractCegarLoop]: Abstraction has has 1040 places, 4435 transitions, 87470 flow [2023-01-27 23:59:09,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 90.86585365853658) internal successors, (7451), 82 states have internal predecessors, (7451), 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 23:59:09,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:59:09,708 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 23:59:09,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 23:59:09,913 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,SelfDestructingSolverStorable16 [2023-01-27 23:59:09,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:59:09,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:59:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash -809020241, now seen corresponding path program 5 times [2023-01-27 23:59:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:59:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983253207] [2023-01-27 23:59:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:59:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:59:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:59:11,730 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 23:59:11,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:59:11,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983253207] [2023-01-27 23:59:11,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983253207] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:59:11,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822687596] [2023-01-27 23:59:11,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:59:11,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:59:11,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:59:11,731 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 23:59:11,733 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 23:59:11,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 23:59:11,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:59:11,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 115 conjunts are in the unsatisfiable core [2023-01-27 23:59:11,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:59:11,887 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:59:11,888 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 23:59:12,064 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 23:59:12,121 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 23:59:12,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:59:12,462 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 23:59:12,742 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 26 treesize of output 21 [2023-01-27 23:59:13,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:59:13,568 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 64 treesize of output 32 [2023-01-27 23:59:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:59:13,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:59:35,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:59:35,980 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 30 treesize of output 31 [2023-01-27 23:59:35,989 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:59:35,989 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 51 treesize of output 54 [2023-01-27 23:59:35,993 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 29 treesize of output 22 [2023-01-27 23:59:36,389 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 23:59:36,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822687596] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:59:36,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:59:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 28] total 85 [2023-01-27 23:59:36,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286736010] [2023-01-27 23:59:36,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:59:36,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-01-27 23:59:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:59:36,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-01-27 23:59:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=737, Invalid=6735, Unknown=10, NotChecked=0, Total=7482 [2023-01-27 23:59:36,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:59:36,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1040 places, 4435 transitions, 87470 flow. Second operand has 87 states, 87 states have (on average 86.71264367816092) internal successors, (7544), 87 states have internal predecessors, (7544), 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 23:59:36,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:59:36,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:59:36,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:59:54,926 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] [2023-01-28 00:00:25,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:00:54,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:00:57,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:00:59,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:01:01,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:01:03,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:01:05,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:25,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:27,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:29,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:30,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:32,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:35,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:03:55,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:04:54,625 WARN L222 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 82 DAG size of output: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-28 00:05:08,376 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 00:05:08,376 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 00:05:09,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 00:05:09,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 00:05:10,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 00:05:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 00:05:10,699 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 00:05:10,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-28 00:05:10,701 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 00:05:10,701 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 00:05:10,701 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-28 00:05:10,701 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 00:05:10,701 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 2, 1, 1, 1, 1] [2023-01-28 00:05:10,705 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:05:10,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:05:10,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:05:10 BasicIcfg [2023-01-28 00:05:10,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:05:10,707 INFO L158 Benchmark]: Toolchain (without parser) took 811798.04ms. Allocated memory was 385.9MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 321.2MB in the beginning and 4.8GB in the end (delta: -4.4GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-01-28 00:05:10,707 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 329.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:05:10,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.49ms. Allocated memory was 385.9MB in the beginning and 669.0MB in the end (delta: 283.1MB). Free memory was 321.2MB in the beginning and 629.0MB in the end (delta: -307.8MB). Peak memory consumption was 36.9MB. Max. memory is 16.0GB. [2023-01-28 00:05:10,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.95ms. Allocated memory is still 669.0MB. Free memory was 629.0MB in the beginning and 626.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:05:10,707 INFO L158 Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 669.0MB. Free memory was 626.9MB in the beginning and 624.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:05:10,707 INFO L158 Benchmark]: RCFGBuilder took 390.50ms. Allocated memory is still 669.0MB. Free memory was 624.8MB in the beginning and 603.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:05:10,708 INFO L158 Benchmark]: TraceAbstraction took 810960.04ms. Allocated memory was 669.0MB in the beginning and 7.4GB in the end (delta: 6.8GB). Free memory was 603.8MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-01-28 00:05:10,710 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 385.9MB. Free memory is still 329.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 355.49ms. Allocated memory was 385.9MB in the beginning and 669.0MB in the end (delta: 283.1MB). Free memory was 321.2MB in the beginning and 629.0MB in the end (delta: -307.8MB). Peak memory consumption was 36.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.95ms. Allocated memory is still 669.0MB. Free memory was 629.0MB in the beginning and 626.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.25ms. Allocated memory is still 669.0MB. Free memory was 626.9MB in the beginning and 624.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 390.50ms. Allocated memory is still 669.0MB. Free memory was 624.8MB in the beginning and 603.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 810960.04ms. Allocated memory was 669.0MB in the beginning and 7.4GB in the end (delta: 6.8GB). Free memory was 603.8MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 137 PlacesBefore, 34 PlacesAfterwards, 140 TransitionsBefore, 32 TransitionsAfterwards, 6492 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 131 TotalNumberOfCompositions, 8978 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6450, independent: 6265, independent conditional: 0, independent unconditional: 6265, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3562, independent: 3515, independent conditional: 0, independent unconditional: 3515, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6450, independent: 2750, independent conditional: 0, independent unconditional: 2750, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 3562, unknown conditional: 0, unknown unconditional: 3562] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, 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 executing Executor. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - 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 executing Executor. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 236 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: 810.8s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 744.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 638 mSolverCounterUnknown, 12920 SdHoareTripleChecker+Valid, 93.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12920 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 88.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 955 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54690 IncrementalHoareTripleChecker+Invalid, 57611 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1328 mSolverCounterUnsat, 3 mSDtfsCounter, 54690 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2180 GetRequests, 564 SyntacticMatches, 33 SemanticMatches, 1583 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148112 ImplicationChecksByTransitivity, 510.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87470occurred in iteration=17, InterpolantAutomatonStates: 981, 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, 1.0s SatisfiabilityAnalysisTime, 58.9s InterpolantComputationTime, 903 NumberOfCodeBlocks, 895 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1217 ConstructedInterpolants, 50 QuantifiedInterpolants, 25405 SizeOfPredicates, 256 NumberOfNonLiveVariables, 3581 ConjunctsInSsa, 632 ConjunctsInUnsatCore, 40 InterpolantComputations, 9 PerfectInterpolantSequences, 95/746 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