/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/weaver/popl20-more-dec-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:31:48,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:31:48,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:31:48,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 04:31:48,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:31:48,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:31:48,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:31:48,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:31:48,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:31:48,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:31:48,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:31:48,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:31:48,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:31:48,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:31:48,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:31:48,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:31:48,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:31:48,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:31:48,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:31:48,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:31:48,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:31:48,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:31:48,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:31:48,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:31:48,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:31:48,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:31:48,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:31:48,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:31:48,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:31:48,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:31:48,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:31:48,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:31:48,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:31:48,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 04:31:48,240 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:31:48,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:31:48,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:31:48,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:31:48,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:31:48,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:31:48,242 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:31:48,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:31:48,242 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:31:48,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:31:48,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:31:48,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:31:48,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:31:48,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:31:48,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:31:48,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:31:48,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:31:48,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:31:48,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:31:48,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:31:48,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:31:48,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:31:48,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:31:48,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:31:48,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:31:48,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:31:48,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:31:48,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:31:48,470 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:31:48,470 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:31:48,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-01-28 04:31:49,447 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:31:49,596 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:31:49,597 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-01-28 04:31:49,601 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3955770/2e25fae97acc4800888186c05ee113a0/FLAGe5580817b [2023-01-28 04:31:49,611 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3955770/2e25fae97acc4800888186c05ee113a0 [2023-01-28 04:31:49,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:31:49,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:31:49,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:31:49,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:31:49,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:31:49,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7476efb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49, skipping insertion in model container [2023-01-28 04:31:49,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:31:49,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:31:49,776 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2023-01-28 04:31:49,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:31:49,798 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:31:49,825 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2023-01-28 04:31:49,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:31:49,837 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:31:49,838 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:31:49,842 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:31:49,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49 WrapperNode [2023-01-28 04:31:49,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:31:49,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:31:49,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:31:49,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:31:49,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,890 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 196 [2023-01-28 04:31:49,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:31:49,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:31:49,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:31:49,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:31:49,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:31:49,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:31:49,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:31:49,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:31:49,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (1/1) ... [2023-01-28 04:31:49,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:31:49,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:49,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 04:31:49,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:31:49,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:31:49,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:31:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:31:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:31:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:31:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:31:49,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:31:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:31:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:31:50,000 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 04:31:50,126 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:31:50,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:31:50,370 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:31:50,445 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:31:50,448 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:31:50,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:31:50 BoogieIcfgContainer [2023-01-28 04:31:50,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:31:50,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:31:50,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:31:50,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:31:50,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:31:49" (1/3) ... [2023-01-28 04:31:50,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7192a79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:31:50, skipping insertion in model container [2023-01-28 04:31:50,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:31:49" (2/3) ... [2023-01-28 04:31:50,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7192a79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:31:50, skipping insertion in model container [2023-01-28 04:31:50,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:31:50" (3/3) ... [2023-01-28 04:31:50,471 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-01-28 04:31:50,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:31:50,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:31:50,484 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:31:50,542 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 04:31:50,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 372 flow [2023-01-28 04:31:50,654 INFO L130 PetriNetUnfolder]: 15/176 cut-off events. [2023-01-28 04:31:50,655 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 04:31:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 15/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-01-28 04:31:50,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 372 flow [2023-01-28 04:31:50,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 348 flow [2023-01-28 04:31:50,669 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:31:50,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 168 transitions, 348 flow [2023-01-28 04:31:50,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 168 transitions, 348 flow [2023-01-28 04:31:50,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 168 transitions, 348 flow [2023-01-28 04:31:50,726 INFO L130 PetriNetUnfolder]: 15/168 cut-off events. [2023-01-28 04:31:50,726 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 04:31:50,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 168 events. 15/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-01-28 04:31:50,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 690 [2023-01-28 04:31:54,981 INFO L134 LiptonReduction]: Checked pairs total: 1199 [2023-01-28 04:31:54,981 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-01-28 04:31:54,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:31:54,999 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;@16f27dfc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:31:54,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 04:31:55,003 INFO L130 PetriNetUnfolder]: 5/22 cut-off events. [2023-01-28 04:31:55,003 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 04:31:55,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:55,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:55,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:55,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1033780346, now seen corresponding path program 1 times [2023-01-28 04:31:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:55,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668764727] [2023-01-28 04:31:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:55,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668764727] [2023-01-28 04:31:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668764727] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:55,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:55,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:31:55,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851893569] [2023-01-28 04:31:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:31:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:31:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:31:55,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 352 [2023-01-28 04:31:55,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:55,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 352 [2023-01-28 04:31:55,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:55,586 INFO L130 PetriNetUnfolder]: 91/155 cut-off events. [2023-01-28 04:31:55,586 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 04:31:55,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 155 events. 91/155 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 392 event pairs, 57 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 270. Up to 155 conditions per place. [2023-01-28 04:31:55,589 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-28 04:31:55,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 108 flow [2023-01-28 04:31:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:31:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:31:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-01-28 04:31:55,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39299242424242425 [2023-01-28 04:31:55,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-01-28 04:31:55,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-01-28 04:31:55,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:55,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-01-28 04:31:55,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,618 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 58 flow. Second operand 3 states and 415 transitions. [2023-01-28 04:31:55,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 108 flow [2023-01-28 04:31:55,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 04:31:55,621 INFO L231 Difference]: Finished difference. Result has 24 places, 24 transitions, 62 flow [2023-01-28 04:31:55,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=24} [2023-01-28 04:31:55,626 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2023-01-28 04:31:55,626 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 24 transitions, 62 flow [2023-01-28 04:31:55,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:55,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:55,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:31:55,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:55,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash -164115016, now seen corresponding path program 1 times [2023-01-28 04:31:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:55,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245047714] [2023-01-28 04:31:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:55,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245047714] [2023-01-28 04:31:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245047714] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799057148] [2023-01-28 04:31:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:55,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:55,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:55,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:31:55,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 04:31:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:55,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:31:55,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:55,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799057148] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:56,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:31:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-01-28 04:31:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489326518] [2023-01-28 04:31:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:56,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:31:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:31:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:31:56,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 04:31:56,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 24 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:56,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 04:31:56,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:56,111 INFO L130 PetriNetUnfolder]: 157/261 cut-off events. [2023-01-28 04:31:56,111 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 04:31:56,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 261 events. 157/261 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 789 event pairs, 39 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 526. Up to 97 conditions per place. [2023-01-28 04:31:56,113 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-01-28 04:31:56,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 43 transitions, 188 flow [2023-01-28 04:31:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:31:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:31:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 806 transitions. [2023-01-28 04:31:56,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3816287878787879 [2023-01-28 04:31:56,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 806 transitions. [2023-01-28 04:31:56,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 806 transitions. [2023-01-28 04:31:56,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:56,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 806 transitions. [2023-01-28 04:31:56,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,120 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,120 INFO L175 Difference]: Start difference. First operand has 24 places, 24 transitions, 62 flow. Second operand 6 states and 806 transitions. [2023-01-28 04:31:56,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 43 transitions, 188 flow [2023-01-28 04:31:56,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 184 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:56,121 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2023-01-28 04:31:56,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-01-28 04:31:56,121 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-01-28 04:31:56,122 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2023-01-28 04:31:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:56,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:56,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 04:31:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:56,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:56,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1388554985, now seen corresponding path program 1 times [2023-01-28 04:31:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:56,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688684531] [2023-01-28 04:31:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:56,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:56,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688684531] [2023-01-28 04:31:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688684531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:56,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:56,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:31:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197116479] [2023-01-28 04:31:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:56,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:31:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:31:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:31:56,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 352 [2023-01-28 04:31:56,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:56,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 352 [2023-01-28 04:31:56,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:56,541 INFO L130 PetriNetUnfolder]: 294/476 cut-off events. [2023-01-28 04:31:56,542 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-01-28 04:31:56,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 476 events. 294/476 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1767 event pairs, 55 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 1126. Up to 250 conditions per place. [2023-01-28 04:31:56,545 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 46 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-01-28 04:31:56,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 336 flow [2023-01-28 04:31:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:31:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:31:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 769 transitions. [2023-01-28 04:31:56,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369318181818182 [2023-01-28 04:31:56,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 769 transitions. [2023-01-28 04:31:56,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 769 transitions. [2023-01-28 04:31:56,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:56,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 769 transitions. [2023-01-28 04:31:56,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,551 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 5 states and 769 transitions. [2023-01-28 04:31:56,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 336 flow [2023-01-28 04:31:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 04:31:56,555 INFO L231 Difference]: Finished difference. Result has 35 places, 41 transitions, 234 flow [2023-01-28 04:31:56,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=35, PETRI_TRANSITIONS=41} [2023-01-28 04:31:56,556 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-01-28 04:31:56,556 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 41 transitions, 234 flow [2023-01-28 04:31:56,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:56,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:56,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 04:31:56,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:56,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1352553143, now seen corresponding path program 2 times [2023-01-28 04:31:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396243133] [2023-01-28 04:31:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:56,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396243133] [2023-01-28 04:31:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396243133] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 04:31:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575458026] [2023-01-28 04:31:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:56,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:31:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:31:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:31:56,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 352 [2023-01-28 04:31:56,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:56,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 352 [2023-01-28 04:31:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:56,761 INFO L130 PetriNetUnfolder]: 477/766 cut-off events. [2023-01-28 04:31:56,761 INFO L131 PetriNetUnfolder]: For 1197/1219 co-relation queries the response was YES. [2023-01-28 04:31:56,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 766 events. 477/766 cut-off events. For 1197/1219 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3156 event pairs, 137 based on Foata normal form. 16/766 useless extension candidates. Maximal degree in co-relation 2675. Up to 433 conditions per place. [2023-01-28 04:31:56,765 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 62 selfloop transitions, 4 changer transitions 2/70 dead transitions. [2023-01-28 04:31:56,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 70 transitions, 562 flow [2023-01-28 04:31:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:31:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:31:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-01-28 04:31:56,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2023-01-28 04:31:56,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-01-28 04:31:56,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-01-28 04:31:56,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:56,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-01-28 04:31:56,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,770 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 234 flow. Second operand 3 states and 504 transitions. [2023-01-28 04:31:56,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 70 transitions, 562 flow [2023-01-28 04:31:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 70 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 04:31:56,775 INFO L231 Difference]: Finished difference. Result has 38 places, 44 transitions, 271 flow [2023-01-28 04:31:56,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=38, PETRI_TRANSITIONS=44} [2023-01-28 04:31:56,777 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-01-28 04:31:56,777 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 271 flow [2023-01-28 04:31:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:56,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:56,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:56,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 04:31:56,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:56,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -84645957, now seen corresponding path program 1 times [2023-01-28 04:31:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077294568] [2023-01-28 04:31:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:56,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:56,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077294568] [2023-01-28 04:31:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077294568] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437620705] [2023-01-28 04:31:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:56,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:56,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:56,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:31:56,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 04:31:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:31:57,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:57,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:31:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437620705] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:31:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2023-01-28 04:31:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125300523] [2023-01-28 04:31:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:31:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:31:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:31:57,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-01-28 04:31:57,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:57,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-01-28 04:31:57,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:57,186 INFO L130 PetriNetUnfolder]: 421/703 cut-off events. [2023-01-28 04:31:57,186 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2023-01-28 04:31:57,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2535 conditions, 703 events. 421/703 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2734 event pairs, 94 based on Foata normal form. 22/724 useless extension candidates. Maximal degree in co-relation 2506. Up to 587 conditions per place. [2023-01-28 04:31:57,191 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 51 selfloop transitions, 2 changer transitions 5/58 dead transitions. [2023-01-28 04:31:57,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 448 flow [2023-01-28 04:31:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:31:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:31:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-01-28 04:31:57,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2023-01-28 04:31:57,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-01-28 04:31:57,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-01-28 04:31:57,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:57,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-01-28 04:31:57,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,198 INFO L175 Difference]: Start difference. First operand has 38 places, 44 transitions, 271 flow. Second operand 3 states and 498 transitions. [2023-01-28 04:31:57,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 448 flow [2023-01-28 04:31:57,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:57,203 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 273 flow [2023-01-28 04:31:57,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-01-28 04:31:57,205 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-01-28 04:31:57,208 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 273 flow [2023-01-28 04:31:57,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:57,209 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] [2023-01-28 04:31:57,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 04:31:57,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:57,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:57,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 286694240, now seen corresponding path program 1 times [2023-01-28 04:31:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886354292] [2023-01-28 04:31:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886354292] [2023-01-28 04:31:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886354292] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:31:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163468039] [2023-01-28 04:31:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:31:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:31:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:31:57,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 352 [2023-01-28 04:31:57,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:57,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 352 [2023-01-28 04:31:57,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:57,596 INFO L130 PetriNetUnfolder]: 448/776 cut-off events. [2023-01-28 04:31:57,596 INFO L131 PetriNetUnfolder]: For 1574/1606 co-relation queries the response was YES. [2023-01-28 04:31:57,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2933 conditions, 776 events. 448/776 cut-off events. For 1574/1606 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3252 event pairs, 242 based on Foata normal form. 42/807 useless extension candidates. Maximal degree in co-relation 2509. Up to 660 conditions per place. [2023-01-28 04:31:57,600 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 41 selfloop transitions, 2 changer transitions 20/65 dead transitions. [2023-01-28 04:31:57,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 505 flow [2023-01-28 04:31:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:31:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:31:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 714 transitions. [2023-01-28 04:31:57,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056818181818182 [2023-01-28 04:31:57,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 714 transitions. [2023-01-28 04:31:57,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 714 transitions. [2023-01-28 04:31:57,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:57,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 714 transitions. [2023-01-28 04:31:57,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,608 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,608 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 273 flow. Second operand 5 states and 714 transitions. [2023-01-28 04:31:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 505 flow [2023-01-28 04:31:57,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 65 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:31:57,612 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 287 flow [2023-01-28 04:31:57,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-01-28 04:31:57,614 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 21 predicate places. [2023-01-28 04:31:57,614 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 287 flow [2023-01-28 04:31:57,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:31:57,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:57,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:57,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 04:31:57,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:31:57,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:57,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1802696178, now seen corresponding path program 1 times [2023-01-28 04:31:57,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:57,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036914025] [2023-01-28 04:31:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:58,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036914025] [2023-01-28 04:31:58,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036914025] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703011839] [2023-01-28 04:31:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:58,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:58,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:31:58,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 04:31:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:58,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 04:31:58,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:58,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:31:58,965 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 18 treesize of output 20 [2023-01-28 04:31:59,235 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-01-28 04:31:59,236 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 42 treesize of output 10 [2023-01-28 04:31:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:59,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:59,579 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~end~0) (let ((.cse1 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse3 (+ c_~A~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (let ((.cse0 (select .cse2 ~queue~0.base))) (or (< (select .cse0 (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1)) (not (= (select .cse0 .cse1) (select (select .cse2 c_~A~0.base) .cse3))))))) (or (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (not (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (= (select (select .cse4 ~queue~0.base) .cse1) (select (select .cse4 c_~A~0.base) .cse3))))) (not (= (mod c_~ok~0 256) 0))))) (<= (+ c_~end~0 1) c_~start~0) (< c_~start~0 0) (< c_~last~0 |c_thread1Thread1of1ForFork1_#t~mem1#1|)) is different from false [2023-01-28 04:31:59,649 INFO L321 Elim1Store]: treesize reduction 11, result has 87.1 percent of original size [2023-01-28 04:31:59,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 251 [2023-01-28 04:31:59,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:59,689 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 174 treesize of output 185 [2023-01-28 04:31:59,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:59,704 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 144 treesize of output 137 [2023-01-28 04:32:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:00,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703011839] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:00,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:00,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-28 04:32:00,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515731540] [2023-01-28 04:32:00,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:00,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:32:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:00,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:32:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=696, Unknown=1, NotChecked=56, Total=930 [2023-01-28 04:32:00,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 352 [2023-01-28 04:32:00,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 287 flow. Second operand has 31 states, 31 states have (on average 86.12903225806451) internal successors, (2670), 31 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:00,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:00,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 352 [2023-01-28 04:32:00,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:01,613 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ (* c_~start~0 4) c_~queue~0.offset)) (.cse2 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse7 (+ c_~A~0.offset (* c_~i~0 4))) (.cse10 (< c_~last~0 |c_thread1Thread1of1ForFork1_#t~mem1#1|)) (.cse0 (<= c_~n~0 c_~end~0)) (.cse8 (<= (+ c_~end~0 1) c_~start~0)) (.cse5 (+ c_~v_old~0 1)) (.cse6 (not (= (mod c_~ok~0 256) 0))) (.cse11 (= c_~start~0 c_~end~0)) (.cse9 (< c_~start~0 0))) (and (or .cse0 (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) .cse7))) (and (forall ((~queue~0.base Int)) (let ((.cse1 (select |c_#memory_int| ~queue~0.base))) (or (not (= (select .cse1 .cse2) .cse3)) (< (select .cse1 .cse4) .cse5)))) (or (forall ((~queue~0.base Int)) (not (= (select (select |c_#memory_int| ~queue~0.base) .cse2) .cse3))) .cse6))) .cse8 .cse9 .cse10) (or .cse0 .cse8 .cse9 (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (and (< |c_#StackHeapBarrier| (+ |c_ULTIMATE.start_main_~#t2~0#1.base| 1)) .cse6 .cse11)) (= c_~ok~0 1) (or .cse0 .cse8 (and .cse6 (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse11) .cse9) (or .cse0 (and (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (let ((.cse12 (select .cse13 ~queue~0.base))) (or (< (select .cse12 .cse4) .cse5) (not (= (select .cse12 .cse2) (select (select .cse13 c_~A~0.base) .cse7))))))) (or (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (not (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (= (select (select .cse14 ~queue~0.base) .cse2) (select (select .cse14 c_~A~0.base) .cse7))))) .cse6)) .cse8 .cse9 .cse10) (or .cse0 .cse8 (and (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~A~0.base)) (< c_~last~0 .cse5) .cse6 .cse11) .cse9))) is different from false [2023-01-28 04:32:04,554 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~start~0 4) c_~queue~0.offset)) (.cse6 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse8 (+ c_~A~0.offset (* c_~i~0 4))) (.cse10 (< c_~last~0 |c_thread1Thread1of1ForFork1_#t~mem1#1|)) (.cse4 (<= c_~n~0 c_~end~0)) (.cse9 (<= (+ c_~end~0 1) c_~start~0)) (.cse1 (+ c_~v_old~0 1)) (.cse2 (not (= (mod c_~ok~0 256) 0))) (.cse11 (= c_~start~0 c_~end~0)) (.cse3 (< c_~start~0 0))) (and (or (and (< (select (select |c_#memory_int| c_~queue~0.base) .cse0) .cse1) .cse2) .cse3 (<= c_~end~0 c_~start~0) (<= c_~n~0 c_~start~0)) (or .cse4 (let ((.cse7 (select (select |c_#memory_int| c_~A~0.base) .cse8))) (and (forall ((~queue~0.base Int)) (let ((.cse5 (select |c_#memory_int| ~queue~0.base))) (or (not (= (select .cse5 .cse6) .cse7)) (< (select .cse5 .cse0) .cse1)))) (or (forall ((~queue~0.base Int)) (not (= (select (select |c_#memory_int| ~queue~0.base) .cse6) .cse7))) .cse2))) .cse9 .cse3 .cse10) (= c_~new~0 c_~v_old~0) (or .cse4 .cse9 .cse3 (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (and (< |c_#StackHeapBarrier| (+ |c_ULTIMATE.start_main_~#t2~0#1.base| 1)) .cse2 .cse11)) (= c_~ok~0 1) (or .cse4 .cse9 (and .cse2 (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse11) .cse3) (or .cse4 (and (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (let ((.cse12 (select .cse13 ~queue~0.base))) (or (< (select .cse12 .cse0) .cse1) (not (= (select .cse12 .cse6) (select (select .cse13 c_~A~0.base) .cse8))))))) (or (forall ((v_ArrVal_173 (Array Int Int)) (~queue~0.base Int)) (not (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_173))) (= (select (select .cse14 ~queue~0.base) .cse6) (select (select .cse14 c_~A~0.base) .cse8))))) .cse2)) .cse9 .cse3 .cse10) (or .cse4 .cse9 (and (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~A~0.base)) (< c_~last~0 .cse1) .cse2 .cse11) .cse3))) is different from false [2023-01-28 04:32:07,298 INFO L130 PetriNetUnfolder]: 2935/4953 cut-off events. [2023-01-28 04:32:07,299 INFO L131 PetriNetUnfolder]: For 8246/8246 co-relation queries the response was YES. [2023-01-28 04:32:07,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18685 conditions, 4953 events. 2935/4953 cut-off events. For 8246/8246 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 30338 event pairs, 178 based on Foata normal form. 62/5011 useless extension candidates. Maximal degree in co-relation 18660. Up to 1611 conditions per place. [2023-01-28 04:32:07,326 INFO L137 encePairwiseOnDemand]: 334/352 looper letters, 368 selfloop transitions, 278 changer transitions 126/772 dead transitions. [2023-01-28 04:32:07,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 772 transitions, 6088 flow [2023-01-28 04:32:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-01-28 04:32:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-01-28 04:32:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 6512 transitions. [2023-01-28 04:32:07,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2605633802816901 [2023-01-28 04:32:07,353 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 6512 transitions. [2023-01-28 04:32:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 6512 transitions. [2023-01-28 04:32:07,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:07,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 6512 transitions. [2023-01-28 04:32:07,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 91.71830985915493) internal successors, (6512), 71 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:07,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 352.0) internal successors, (25344), 72 states have internal predecessors, (25344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:07,391 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 352.0) internal successors, (25344), 72 states have internal predecessors, (25344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:07,391 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 287 flow. Second operand 71 states and 6512 transitions. [2023-01-28 04:32:07,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 772 transitions, 6088 flow [2023-01-28 04:32:07,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 772 transitions, 6050 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 04:32:07,414 INFO L231 Difference]: Finished difference. Result has 166 places, 343 transitions, 3769 flow [2023-01-28 04:32:07,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=3769, PETRI_PLACES=166, PETRI_TRANSITIONS=343} [2023-01-28 04:32:07,414 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 141 predicate places. [2023-01-28 04:32:07,414 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 343 transitions, 3769 flow [2023-01-28 04:32:07,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.12903225806451) internal successors, (2670), 31 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:07,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:07,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:07,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 04:32:07,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:07,621 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:07,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1490303590, now seen corresponding path program 2 times [2023-01-28 04:32:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:07,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342736883] [2023-01-28 04:32:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:08,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342736883] [2023-01-28 04:32:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342736883] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801669241] [2023-01-28 04:32:08,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:32:08,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:08,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:08,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:08,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 04:32:08,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:32:08,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:08,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 04:32:08,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:08,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:32:08,770 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 04:32:08,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-01-28 04:32:08,777 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 27 treesize of output 15 [2023-01-28 04:32:08,864 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 23 treesize of output 7 [2023-01-28 04:32:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:08,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:09,010 WARN L839 $PredicateComparison]: unable to prove that (and (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_212 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_212) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1)))) is different from false [2023-01-28 04:32:09,098 INFO L321 Elim1Store]: treesize reduction 19, result has 59.6 percent of original size [2023-01-28 04:32:09,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2023-01-28 04:32:09,107 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 33 treesize of output 27 [2023-01-28 04:32:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:09,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801669241] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:09,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:09,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 04:32:09,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487269165] [2023-01-28 04:32:09,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:09,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:32:09,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:32:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=664, Unknown=1, NotChecked=54, Total=870 [2023-01-28 04:32:09,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 352 [2023-01-28 04:32:09,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 343 transitions, 3769 flow. Second operand has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:09,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:09,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 352 [2023-01-28 04:32:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:19,505 INFO L130 PetriNetUnfolder]: 5741/9595 cut-off events. [2023-01-28 04:32:19,505 INFO L131 PetriNetUnfolder]: For 231639/231639 co-relation queries the response was YES. [2023-01-28 04:32:19,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78973 conditions, 9595 events. 5741/9595 cut-off events. For 231639/231639 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 64122 event pairs, 338 based on Foata normal form. 40/9635 useless extension candidates. Maximal degree in co-relation 78873. Up to 3291 conditions per place. [2023-01-28 04:32:19,732 INFO L137 encePairwiseOnDemand]: 335/352 looper letters, 548 selfloop transitions, 477 changer transitions 103/1128 dead transitions. [2023-01-28 04:32:19,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1128 transitions, 16105 flow [2023-01-28 04:32:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 04:32:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 04:32:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3375 transitions. [2023-01-28 04:32:19,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2739448051948052 [2023-01-28 04:32:19,740 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3375 transitions. [2023-01-28 04:32:19,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3375 transitions. [2023-01-28 04:32:19,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:19,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3375 transitions. [2023-01-28 04:32:19,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 96.42857142857143) internal successors, (3375), 35 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:19,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 352.0) internal successors, (12672), 36 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:19,770 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 352.0) internal successors, (12672), 36 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:19,770 INFO L175 Difference]: Start difference. First operand has 166 places, 343 transitions, 3769 flow. Second operand 35 states and 3375 transitions. [2023-01-28 04:32:19,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1128 transitions, 16105 flow [2023-01-28 04:32:20,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1128 transitions, 15095 flow, removed 503 selfloop flow, removed 12 redundant places. [2023-01-28 04:32:20,464 INFO L231 Difference]: Finished difference. Result has 200 places, 741 transitions, 10075 flow [2023-01-28 04:32:20,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10075, PETRI_PLACES=200, PETRI_TRANSITIONS=741} [2023-01-28 04:32:20,464 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 175 predicate places. [2023-01-28 04:32:20,465 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 741 transitions, 10075 flow [2023-01-28 04:32:20,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:20,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:20,466 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] [2023-01-28 04:32:20,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 04:32:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:20,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:20,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2047725600, now seen corresponding path program 3 times [2023-01-28 04:32:20,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:20,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569853970] [2023-01-28 04:32:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569853970] [2023-01-28 04:32:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569853970] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508648394] [2023-01-28 04:32:21,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:32:21,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:21,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:21,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 04:32:21,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:32:21,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:21,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 04:32:21,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:21,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:32:21,809 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 04:32:21,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-01-28 04:32:21,820 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 27 treesize of output 15 [2023-01-28 04:32:21,885 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 23 treesize of output 7 [2023-01-28 04:32:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:21,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:22,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:32:22,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 135 [2023-01-28 04:32:22,167 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 42 treesize of output 36 [2023-01-28 04:32:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:32:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508648394] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:22,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:22,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 28 [2023-01-28 04:32:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438296985] [2023-01-28 04:32:22,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:22,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:32:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:32:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=709, Unknown=1, NotChecked=0, Total=870 [2023-01-28 04:32:22,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 352 [2023-01-28 04:32:22,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 741 transitions, 10075 flow. Second operand has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:22,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:22,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 352 [2023-01-28 04:32:22,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:25,669 INFO L130 PetriNetUnfolder]: 6937/11537 cut-off events. [2023-01-28 04:32:25,669 INFO L131 PetriNetUnfolder]: For 293902/293902 co-relation queries the response was YES. [2023-01-28 04:32:25,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104718 conditions, 11537 events. 6937/11537 cut-off events. For 293902/293902 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 79306 event pairs, 314 based on Foata normal form. 2/11539 useless extension candidates. Maximal degree in co-relation 104608. Up to 3943 conditions per place. [2023-01-28 04:32:25,961 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 727 selfloop transitions, 399 changer transitions 23/1149 dead transitions. [2023-01-28 04:32:25,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 1149 transitions, 18743 flow [2023-01-28 04:32:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 04:32:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 04:32:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1911 transitions. [2023-01-28 04:32:25,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2714488636363636 [2023-01-28 04:32:25,965 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1911 transitions. [2023-01-28 04:32:25,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1911 transitions. [2023-01-28 04:32:25,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:25,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1911 transitions. [2023-01-28 04:32:25,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:25,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:25,972 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:25,972 INFO L175 Difference]: Start difference. First operand has 200 places, 741 transitions, 10075 flow. Second operand 20 states and 1911 transitions. [2023-01-28 04:32:25,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 1149 transitions, 18743 flow [2023-01-28 04:32:27,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1149 transitions, 18022 flow, removed 351 selfloop flow, removed 9 redundant places. [2023-01-28 04:32:27,509 INFO L231 Difference]: Finished difference. Result has 210 places, 869 transitions, 12858 flow [2023-01-28 04:32:27,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=9687, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=12858, PETRI_PLACES=210, PETRI_TRANSITIONS=869} [2023-01-28 04:32:27,510 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 185 predicate places. [2023-01-28 04:32:27,510 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 869 transitions, 12858 flow [2023-01-28 04:32:27,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 90.2) internal successors, (2706), 30 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:27,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:27,510 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] [2023-01-28 04:32:27,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 04:32:27,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:27,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:27,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash 845325723, now seen corresponding path program 1 times [2023-01-28 04:32:27,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:27,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358947507] [2023-01-28 04:32:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358947507] [2023-01-28 04:32:27,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358947507] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697029088] [2023-01-28 04:32:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:27,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:27,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 04:32:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:27,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:32:27,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:27,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697029088] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:28,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-01-28 04:32:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732276563] [2023-01-28 04:32:28,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:28,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:32:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:32:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:32:28,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 04:32:28,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 869 transitions, 12858 flow. Second operand has 15 states, 15 states have (on average 130.53333333333333) internal successors, (1958), 15 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:28,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:28,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 04:32:28,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:31,208 INFO L130 PetriNetUnfolder]: 6863/11723 cut-off events. [2023-01-28 04:32:31,208 INFO L131 PetriNetUnfolder]: For 314616/314616 co-relation queries the response was YES. [2023-01-28 04:32:31,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105240 conditions, 11723 events. 6863/11723 cut-off events. For 314616/314616 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 84326 event pairs, 916 based on Foata normal form. 271/11994 useless extension candidates. Maximal degree in co-relation 105130. Up to 5940 conditions per place. [2023-01-28 04:32:31,391 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 1226 selfloop transitions, 76 changer transitions 22/1324 dead transitions. [2023-01-28 04:32:31,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1324 transitions, 22049 flow [2023-01-28 04:32:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:32:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:32:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2023-01-28 04:32:31,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832070707070707 [2023-01-28 04:32:31,393 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2023-01-28 04:32:31,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2023-01-28 04:32:31,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:31,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2023-01-28 04:32:31,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:31,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:31,397 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:31,397 INFO L175 Difference]: Start difference. First operand has 210 places, 869 transitions, 12858 flow. Second operand 9 states and 1214 transitions. [2023-01-28 04:32:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1324 transitions, 22049 flow [2023-01-28 04:32:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1324 transitions, 21916 flow, removed 47 selfloop flow, removed 5 redundant places. [2023-01-28 04:32:32,667 INFO L231 Difference]: Finished difference. Result has 215 places, 852 transitions, 12608 flow [2023-01-28 04:32:32,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=12098, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12608, PETRI_PLACES=215, PETRI_TRANSITIONS=852} [2023-01-28 04:32:32,668 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 190 predicate places. [2023-01-28 04:32:32,668 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 852 transitions, 12608 flow [2023-01-28 04:32:32,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 130.53333333333333) internal successors, (1958), 15 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:32,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:32,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:32,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 04:32:32,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:32,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:32,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 43072444, now seen corresponding path program 4 times [2023-01-28 04:32:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:32,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750390673] [2023-01-28 04:32:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:32:32,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750390673] [2023-01-28 04:32:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750390673] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756464464] [2023-01-28 04:32:32,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:32:32,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:32,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:32,961 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) [2023-01-28 04:32:32,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 04:32:33,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:32:33,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:33,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:32:33,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:32:33,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:32:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756464464] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:33,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-28 04:32:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071396216] [2023-01-28 04:32:33,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:33,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 04:32:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 04:32:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 04:32:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 352 [2023-01-28 04:32:33,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 852 transitions, 12608 flow. Second operand has 9 states, 9 states have (on average 146.55555555555554) internal successors, (1319), 9 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:33,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:33,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 352 [2023-01-28 04:32:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:36,434 INFO L130 PetriNetUnfolder]: 7689/13087 cut-off events. [2023-01-28 04:32:36,434 INFO L131 PetriNetUnfolder]: For 342200/342200 co-relation queries the response was YES. [2023-01-28 04:32:36,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120141 conditions, 13087 events. 7689/13087 cut-off events. For 342200/342200 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 94489 event pairs, 711 based on Foata normal form. 78/13165 useless extension candidates. Maximal degree in co-relation 115422. Up to 4579 conditions per place. [2023-01-28 04:32:36,570 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 594 selfloop transitions, 679 changer transitions 0/1273 dead transitions. [2023-01-28 04:32:36,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1273 transitions, 21229 flow [2023-01-28 04:32:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:32:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:32:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1207 transitions. [2023-01-28 04:32:36,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4286221590909091 [2023-01-28 04:32:36,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1207 transitions. [2023-01-28 04:32:36,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1207 transitions. [2023-01-28 04:32:36,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:36,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1207 transitions. [2023-01-28 04:32:36,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.875) internal successors, (1207), 8 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:36,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:36,577 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:36,577 INFO L175 Difference]: Start difference. First operand has 215 places, 852 transitions, 12608 flow. Second operand 8 states and 1207 transitions. [2023-01-28 04:32:36,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1273 transitions, 21229 flow [2023-01-28 04:32:38,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1273 transitions, 21172 flow, removed 25 selfloop flow, removed 2 redundant places. [2023-01-28 04:32:38,022 INFO L231 Difference]: Finished difference. Result has 226 places, 1156 transitions, 20531 flow [2023-01-28 04:32:38,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=12565, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20531, PETRI_PLACES=226, PETRI_TRANSITIONS=1156} [2023-01-28 04:32:38,023 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 201 predicate places. [2023-01-28 04:32:38,023 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 1156 transitions, 20531 flow [2023-01-28 04:32:38,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.55555555555554) internal successors, (1319), 9 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:38,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:38,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:38,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 04:32:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:38,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:38,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1392447874, now seen corresponding path program 5 times [2023-01-28 04:32:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562603104] [2023-01-28 04:32:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:38,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562603104] [2023-01-28 04:32:38,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562603104] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801565624] [2023-01-28 04:32:38,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:32:38,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:38,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:38,358 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) [2023-01-28 04:32:38,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 04:32:38,434 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:32:38,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:38,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:32:38,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:38,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:38,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801565624] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:38,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:38,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2023-01-28 04:32:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120160404] [2023-01-28 04:32:38,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:38,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:32:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:32:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:32:38,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 352 [2023-01-28 04:32:38,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 1156 transitions, 20531 flow. Second operand has 10 states, 10 states have (on average 148.1) internal successors, (1481), 10 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:38,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:38,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 352 [2023-01-28 04:32:38,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:43,221 INFO L130 PetriNetUnfolder]: 8400/14665 cut-off events. [2023-01-28 04:32:43,221 INFO L131 PetriNetUnfolder]: For 499609/499609 co-relation queries the response was YES. [2023-01-28 04:32:43,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151085 conditions, 14665 events. 8400/14665 cut-off events. For 499609/499609 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 108683 event pairs, 769 based on Foata normal form. 584/15249 useless extension candidates. Maximal degree in co-relation 145525. Up to 4949 conditions per place. [2023-01-28 04:32:43,373 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 952 selfloop transitions, 271 changer transitions 263/1486 dead transitions. [2023-01-28 04:32:43,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1486 transitions, 30041 flow [2023-01-28 04:32:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:32:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:32:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1079 transitions. [2023-01-28 04:32:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790584415584416 [2023-01-28 04:32:43,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1079 transitions. [2023-01-28 04:32:43,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1079 transitions. [2023-01-28 04:32:43,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:43,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1079 transitions. [2023-01-28 04:32:43,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.14285714285714) internal successors, (1079), 7 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:43,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:43,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:43,377 INFO L175 Difference]: Start difference. First operand has 226 places, 1156 transitions, 20531 flow. Second operand 7 states and 1079 transitions. [2023-01-28 04:32:43,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1486 transitions, 30041 flow [2023-01-28 04:32:46,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 1486 transitions, 28578 flow, removed 702 selfloop flow, removed 9 redundant places. [2023-01-28 04:32:46,271 INFO L231 Difference]: Finished difference. Result has 219 places, 895 transitions, 16566 flow [2023-01-28 04:32:46,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=15081, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16566, PETRI_PLACES=219, PETRI_TRANSITIONS=895} [2023-01-28 04:32:46,272 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 194 predicate places. [2023-01-28 04:32:46,272 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 895 transitions, 16566 flow [2023-01-28 04:32:46,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 148.1) internal successors, (1481), 10 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:46,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:46,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:46,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 04:32:46,477 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,SelfDestructingSolverStorable11 [2023-01-28 04:32:46,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:46,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 233657423, now seen corresponding path program 2 times [2023-01-28 04:32:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:46,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121986908] [2023-01-28 04:32:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:46,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:32:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121986908] [2023-01-28 04:32:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121986908] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:32:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:32:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:32:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39672157] [2023-01-28 04:32:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:32:46,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:32:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:32:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:32:46,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 352 [2023-01-28 04:32:46,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 895 transitions, 16566 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:46,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:46,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 352 [2023-01-28 04:32:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:50,389 INFO L130 PetriNetUnfolder]: 7064/12351 cut-off events. [2023-01-28 04:32:50,389 INFO L131 PetriNetUnfolder]: For 358964/358964 co-relation queries the response was YES. [2023-01-28 04:32:50,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126792 conditions, 12351 events. 7064/12351 cut-off events. For 358964/358964 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 89532 event pairs, 338 based on Foata normal form. 32/12383 useless extension candidates. Maximal degree in co-relation 123528. Up to 8239 conditions per place. [2023-01-28 04:32:50,625 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 1029 selfloop transitions, 39 changer transitions 18/1086 dead transitions. [2023-01-28 04:32:50,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1086 transitions, 22138 flow [2023-01-28 04:32:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:32:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:32:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 781 transitions. [2023-01-28 04:32:50,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-01-28 04:32:50,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 781 transitions. [2023-01-28 04:32:50,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 781 transitions. [2023-01-28 04:32:50,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:50,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 781 transitions. [2023-01-28 04:32:50,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:50,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:50,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:50,629 INFO L175 Difference]: Start difference. First operand has 219 places, 895 transitions, 16566 flow. Second operand 5 states and 781 transitions. [2023-01-28 04:32:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1086 transitions, 22138 flow [2023-01-28 04:32:52,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1086 transitions, 21743 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-01-28 04:32:52,351 INFO L231 Difference]: Finished difference. Result has 223 places, 903 transitions, 16477 flow [2023-01-28 04:32:52,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=16163, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=16477, PETRI_PLACES=223, PETRI_TRANSITIONS=903} [2023-01-28 04:32:52,353 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 198 predicate places. [2023-01-28 04:32:52,353 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 903 transitions, 16477 flow [2023-01-28 04:32:52,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:32:52,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:52,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 04:32:52,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:32:52,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash -402810445, now seen corresponding path program 3 times [2023-01-28 04:32:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:52,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576371280] [2023-01-28 04:32:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:52,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:32:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:52,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576371280] [2023-01-28 04:32:52,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576371280] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:52,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683332661] [2023-01-28 04:32:52,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:32:52,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:52,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:53,005 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) [2023-01-28 04:32:53,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 04:32:53,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 04:32:53,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:53,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 50 conjunts are in the unsatisfiable core [2023-01-28 04:32:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:32:53,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 04:32:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:32:53,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 04:32:53,545 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:32:53,546 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:32:53,546 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 30 treesize of output 10 [2023-01-28 04:32:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:32:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:53,846 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (let ((.cse1 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse2 (+ c_~A~0.offset (* c_~i~0 4)))) (and (or (not (= (mod c_~ok~0 256) 0)) (forall ((~queue~0.base Int) (v_ArrVal_434 (Array Int Int))) (not (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_434))) (= (select (select .cse0 ~queue~0.base) .cse1) (select (select .cse0 c_~A~0.base) .cse2)))))) (forall ((~queue~0.base Int) (v_ArrVal_434 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_434))) (let ((.cse3 (select .cse4 ~queue~0.base))) (or (< (select .cse3 (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1)) (not (= (select .cse3 .cse1) (select (select .cse4 c_~A~0.base) .cse2)))))))))) is different from false [2023-01-28 04:32:54,045 INFO L321 Elim1Store]: treesize reduction 11, result has 92.0 percent of original size [2023-01-28 04:32:54,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1886 treesize of output 1736 [2023-01-28 04:32:54,353 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:32:54,354 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 792 treesize of output 731 [2023-01-28 04:32:54,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:32:54,418 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 690 treesize of output 623 [2023-01-28 04:32:54,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:32:54,451 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 582 treesize of output 503 [2023-01-28 04:33:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-01-28 04:33:02,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683332661] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:02,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 27 [2023-01-28 04:33:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445508516] [2023-01-28 04:33:02,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:02,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:33:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:33:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=624, Unknown=1, NotChecked=52, Total=812 [2023-01-28 04:33:02,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 352 [2023-01-28 04:33:02,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 903 transitions, 16477 flow. Second operand has 29 states, 29 states have (on average 82.41379310344827) internal successors, (2390), 29 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:02,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:02,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 352 [2023-01-28 04:33:02,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:13,390 INFO L130 PetriNetUnfolder]: 10479/18549 cut-off events. [2023-01-28 04:33:13,390 INFO L131 PetriNetUnfolder]: For 531356/531356 co-relation queries the response was YES. [2023-01-28 04:33:13,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190313 conditions, 18549 events. 10479/18549 cut-off events. For 531356/531356 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 145038 event pairs, 629 based on Foata normal form. 13/18562 useless extension candidates. Maximal degree in co-relation 186178. Up to 5583 conditions per place. [2023-01-28 04:33:13,816 INFO L137 encePairwiseOnDemand]: 334/352 looper letters, 852 selfloop transitions, 944 changer transitions 149/1945 dead transitions. [2023-01-28 04:33:13,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1945 transitions, 39746 flow [2023-01-28 04:33:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-28 04:33:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-28 04:33:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5846 transitions. [2023-01-28 04:33:13,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2442346256684492 [2023-01-28 04:33:13,828 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5846 transitions. [2023-01-28 04:33:13,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5846 transitions. [2023-01-28 04:33:13,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:13,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5846 transitions. [2023-01-28 04:33:13,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 85.97058823529412) internal successors, (5846), 68 states have internal predecessors, (5846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:13,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 352.0) internal successors, (24288), 69 states have internal predecessors, (24288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:13,864 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 352.0) internal successors, (24288), 69 states have internal predecessors, (24288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:13,864 INFO L175 Difference]: Start difference. First operand has 223 places, 903 transitions, 16477 flow. Second operand 68 states and 5846 transitions. [2023-01-28 04:33:13,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1945 transitions, 39746 flow [2023-01-28 04:33:18,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1945 transitions, 39708 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-01-28 04:33:18,259 INFO L231 Difference]: Finished difference. Result has 319 places, 1507 transitions, 31901 flow [2023-01-28 04:33:18,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=16467, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=31901, PETRI_PLACES=319, PETRI_TRANSITIONS=1507} [2023-01-28 04:33:18,271 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 294 predicate places. [2023-01-28 04:33:18,271 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1507 transitions, 31901 flow [2023-01-28 04:33:18,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 82.41379310344827) internal successors, (2390), 29 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:18,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:18,272 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:18,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:18,476 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,SelfDestructingSolverStorable13 [2023-01-28 04:33:18,477 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:33:18,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1960233746, now seen corresponding path program 6 times [2023-01-28 04:33:18,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062276872] [2023-01-28 04:33:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:33:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062276872] [2023-01-28 04:33:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062276872] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902758313] [2023-01-28 04:33:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:33:19,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:19,786 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) [2023-01-28 04:33:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 04:33:19,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:33:19,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:19,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 04:33:19,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:20,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:33:20,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 04:33:20,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:33:20,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 04:33:20,333 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-01-28 04:33:20,333 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 34 treesize of output 10 [2023-01-28 04:33:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:33:20,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:24,805 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_~end~0 4)) (.cse2 (+ c_~A~0.offset (* c_~i~0 4)))) (and (or (forall ((~queue~0.base Int) (~queue~0.offset Int) (v_ArrVal_486 (Array Int Int))) (not (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_486))) (= (select (select .cse0 ~queue~0.base) (+ .cse1 ~queue~0.offset)) (select (select .cse0 c_~A~0.base) .cse2))))) (not (= (mod c_~ok~0 256) 0))) (forall ((~queue~0.base Int) (~queue~0.offset Int) (v_ArrVal_486 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_486))) (let ((.cse3 (select .cse4 ~queue~0.base))) (or (not (= (select .cse3 (+ .cse1 ~queue~0.offset)) (select (select .cse4 c_~A~0.base) .cse2))) (< (select .cse3 (+ (* c_~start~0 4) ~queue~0.offset)) (+ c_~v_old~0 1)))))))) is different from false [2023-01-28 04:33:24,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:33:24,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1454 treesize of output 1390 [2023-01-28 04:33:25,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:33:25,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 792 treesize of output 771 [2023-01-28 04:33:25,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:33:25,061 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 690 treesize of output 623 [2023-01-28 04:33:25,117 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:33:25,117 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 582 treesize of output 503 [2023-01-28 04:34:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 1 not checked. [2023-01-28 04:34:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902758313] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:34:08,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:34:08,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 32 [2023-01-28 04:34:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009485305] [2023-01-28 04:34:08,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:34:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:34:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:34:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:34:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=875, Unknown=2, NotChecked=62, Total=1122 [2023-01-28 04:34:08,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 352 [2023-01-28 04:34:08,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1507 transitions, 31901 flow. Second operand has 34 states, 34 states have (on average 92.11764705882354) internal successors, (3132), 34 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:08,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:34:08,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 352 [2023-01-28 04:34:08,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:34:18,144 INFO L130 PetriNetUnfolder]: 12874/22209 cut-off events. [2023-01-28 04:34:18,144 INFO L131 PetriNetUnfolder]: For 810979/810979 co-relation queries the response was YES. [2023-01-28 04:34:18,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253335 conditions, 22209 events. 12874/22209 cut-off events. For 810979/810979 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 171808 event pairs, 1039 based on Foata normal form. 14/22223 useless extension candidates. Maximal degree in co-relation 252905. Up to 7997 conditions per place. [2023-01-28 04:34:18,498 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 1174 selfloop transitions, 769 changer transitions 63/2006 dead transitions. [2023-01-28 04:34:18,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 2006 transitions, 46276 flow [2023-01-28 04:34:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:34:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:34:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2022 transitions. [2023-01-28 04:34:18,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.273538961038961 [2023-01-28 04:34:18,501 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2022 transitions. [2023-01-28 04:34:18,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2022 transitions. [2023-01-28 04:34:18,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:34:18,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2022 transitions. [2023-01-28 04:34:18,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.28571428571429) internal successors, (2022), 21 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:18,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 352.0) internal successors, (7744), 22 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:18,506 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 352.0) internal successors, (7744), 22 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:18,506 INFO L175 Difference]: Start difference. First operand has 319 places, 1507 transitions, 31901 flow. Second operand 21 states and 2022 transitions. [2023-01-28 04:34:18,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 2006 transitions, 46276 flow [2023-01-28 04:34:25,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 2006 transitions, 43948 flow, removed 556 selfloop flow, removed 26 redundant places. [2023-01-28 04:34:25,325 INFO L231 Difference]: Finished difference. Result has 299 places, 1784 transitions, 38835 flow [2023-01-28 04:34:25,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=30121, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=38835, PETRI_PLACES=299, PETRI_TRANSITIONS=1784} [2023-01-28 04:34:25,326 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 274 predicate places. [2023-01-28 04:34:25,327 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 1784 transitions, 38835 flow [2023-01-28 04:34:25,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 92.11764705882354) internal successors, (3132), 34 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:25,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:34:25,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:34:25,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 04:34:25,531 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,SelfDestructingSolverStorable14 [2023-01-28 04:34:25,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:34:25,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:34:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -60053703, now seen corresponding path program 4 times [2023-01-28 04:34:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:34:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901776350] [2023-01-28 04:34:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:34:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:34:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:34:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 04:34:25,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:34:25,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901776350] [2023-01-28 04:34:25,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901776350] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:34:25,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:34:25,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:34:25,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673749040] [2023-01-28 04:34:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:34:25,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:34:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:34:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:34:25,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:34:25,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 352 [2023-01-28 04:34:25,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1784 transitions, 38835 flow. Second operand has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:25,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:34:25,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 352 [2023-01-28 04:34:25,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:34:34,281 INFO L130 PetriNetUnfolder]: 10944/18731 cut-off events. [2023-01-28 04:34:34,282 INFO L131 PetriNetUnfolder]: For 683099/683099 co-relation queries the response was YES. [2023-01-28 04:34:34,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216429 conditions, 18731 events. 10944/18731 cut-off events. For 683099/683099 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 138369 event pairs, 1129 based on Foata normal form. 48/18779 useless extension candidates. Maximal degree in co-relation 216281. Up to 17866 conditions per place. [2023-01-28 04:34:34,588 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 1468 selfloop transitions, 89 changer transitions 1/1558 dead transitions. [2023-01-28 04:34:34,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1558 transitions, 37033 flow [2023-01-28 04:34:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:34:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:34:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 747 transitions. [2023-01-28 04:34:34,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3536931818181818 [2023-01-28 04:34:34,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 747 transitions. [2023-01-28 04:34:34,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 747 transitions. [2023-01-28 04:34:34,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:34:34,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 747 transitions. [2023-01-28 04:34:34,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:34,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:34,592 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:34,592 INFO L175 Difference]: Start difference. First operand has 299 places, 1784 transitions, 38835 flow. Second operand 6 states and 747 transitions. [2023-01-28 04:34:34,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1558 transitions, 37033 flow [2023-01-28 04:34:38,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1558 transitions, 36657 flow, removed 89 selfloop flow, removed 14 redundant places. [2023-01-28 04:34:39,014 INFO L231 Difference]: Finished difference. Result has 285 places, 1528 transitions, 33227 flow [2023-01-28 04:34:39,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=32790, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=33227, PETRI_PLACES=285, PETRI_TRANSITIONS=1528} [2023-01-28 04:34:39,015 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 260 predicate places. [2023-01-28 04:34:39,015 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1528 transitions, 33227 flow [2023-01-28 04:34:39,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:39,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:34:39,015 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, 1] [2023-01-28 04:34:39,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 04:34:39,016 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:34:39,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:34:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1315736204, now seen corresponding path program 7 times [2023-01-28 04:34:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:34:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027002564] [2023-01-28 04:34:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:34:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:34:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:34:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:34:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:34:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027002564] [2023-01-28 04:34:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027002564] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:34:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944805690] [2023-01-28 04:34:39,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:34:39,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:34:39,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:34:39,113 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) [2023-01-28 04:34:39,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 04:34:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:34:39,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:34:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:34:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:34:39,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:34:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:34:39,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944805690] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:34:39,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:34:39,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 04:34:39,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871098736] [2023-01-28 04:34:39,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:34:39,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:34:39,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:34:39,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:34:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:34:39,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 352 [2023-01-28 04:34:39,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1528 transitions, 33227 flow. Second operand has 12 states, 12 states have (on average 135.66666666666666) internal successors, (1628), 12 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:39,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:34:39,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 352 [2023-01-28 04:34:39,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:34:45,124 INFO L130 PetriNetUnfolder]: 7619/13216 cut-off events. [2023-01-28 04:34:45,125 INFO L131 PetriNetUnfolder]: For 467676/467676 co-relation queries the response was YES. [2023-01-28 04:34:45,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149761 conditions, 13216 events. 7619/13216 cut-off events. For 467676/467676 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 93546 event pairs, 2619 based on Foata normal form. 165/13381 useless extension candidates. Maximal degree in co-relation 149651. Up to 11798 conditions per place. [2023-01-28 04:34:45,372 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 837 selfloop transitions, 3 changer transitions 372/1212 dead transitions. [2023-01-28 04:34:45,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1212 transitions, 29175 flow [2023-01-28 04:34:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:34:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:34:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2023-01-28 04:34:45,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-01-28 04:34:45,374 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2023-01-28 04:34:45,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2023-01-28 04:34:45,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:34:45,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2023-01-28 04:34:45,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:45,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:45,377 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:45,377 INFO L175 Difference]: Start difference. First operand has 285 places, 1528 transitions, 33227 flow. Second operand 6 states and 836 transitions. [2023-01-28 04:34:45,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1212 transitions, 29175 flow [2023-01-28 04:34:47,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1212 transitions, 28623 flow, removed 142 selfloop flow, removed 4 redundant places. [2023-01-28 04:34:47,625 INFO L231 Difference]: Finished difference. Result has 280 places, 840 transitions, 18272 flow [2023-01-28 04:34:47,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=25621, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=18272, PETRI_PLACES=280, PETRI_TRANSITIONS=840} [2023-01-28 04:34:47,626 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 255 predicate places. [2023-01-28 04:34:47,626 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 840 transitions, 18272 flow [2023-01-28 04:34:47,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.66666666666666) internal successors, (1628), 12 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:34:47,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:34:47,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:34:47,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 04:34:47,830 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 [2023-01-28 04:34:47,831 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 04:34:47,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:34:47,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1795058258, now seen corresponding path program 8 times [2023-01-28 04:34:47,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:34:47,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107160950] [2023-01-28 04:34:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:34:47,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:34:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:34:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:34:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:34:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107160950] [2023-01-28 04:34:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107160950] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:34:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944660626] [2023-01-28 04:34:48,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:34:48,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:34:48,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:34:48,765 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) [2023-01-28 04:34:48,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 04:34:48,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:34:48,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:34:48,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 66 conjunts are in the unsatisfiable core [2023-01-28 04:34:48,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:34:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:48,884 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-01-28 04:34:48,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-01-28 04:34:48,960 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 [2023-01-28 04:34:49,003 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:34:49,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-28 04:34:49,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:34:49,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:34:49,083 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 6 treesize of output 5 [2023-01-28 04:34:49,121 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 6 treesize of output 5 [2023-01-28 04:34:49,862 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2023-01-28 04:34:49,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 68 [2023-01-28 04:34:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:34:49,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:34:52,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:52,401 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 250 treesize of output 166 [2023-01-28 04:34:52,620 INFO L321 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2023-01-28 04:34:52,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 111047 treesize of output 102857 [2023-01-28 04:34:53,256 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:53,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:53,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 3411 treesize of output 2717 [2023-01-28 04:34:53,397 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:53,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:53,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 2512 treesize of output 2252 [2023-01-28 04:34:53,571 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:53,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:53,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 2092 treesize of output 2049 Received shutdown request... [2023-01-28 04:45:55,826 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 04:45:55,827 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 04:45:55,845 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 04:45:55,868 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 04:45:55,868 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 04:45:56,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 04:45:56,032 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 58ms.. [2023-01-28 04:45:56,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 04:45:56,034 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 04:45:56,034 INFO L445 BasicCegarLoop]: Path program histogram: [8, 4, 2, 1, 1, 1, 1] [2023-01-28 04:45:56,036 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:45:56,036 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:45:56,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:45:56 BasicIcfg [2023-01-28 04:45:56,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:45:56,039 INFO L158 Benchmark]: Toolchain (without parser) took 846425.44ms. Allocated memory was 377.5MB in the beginning and 6.7GB in the end (delta: 6.3GB). Free memory was 316.2MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-01-28 04:45:56,039 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 377.5MB. Free memory is still 327.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:45:56,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.02ms. Allocated memory is still 377.5MB. Free memory was 315.9MB in the beginning and 304.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:45:56,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.78ms. Allocated memory is still 377.5MB. Free memory was 304.2MB in the beginning and 302.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:45:56,039 INFO L158 Benchmark]: Boogie Preprocessor took 33.41ms. Allocated memory is still 377.5MB. Free memory was 302.1MB in the beginning and 300.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:45:56,039 INFO L158 Benchmark]: RCFGBuilder took 537.29ms. Allocated memory was 377.5MB in the beginning and 541.1MB in the end (delta: 163.6MB). Free memory was 300.3MB in the beginning and 490.2MB in the end (delta: -189.9MB). Peak memory consumption was 14.2MB. Max. memory is 16.0GB. [2023-01-28 04:45:56,040 INFO L158 Benchmark]: TraceAbstraction took 845574.82ms. Allocated memory was 541.1MB in the beginning and 6.7GB in the end (delta: 6.1GB). Free memory was 489.1MB in the beginning and 2.0GB in the end (delta: -1.5GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-01-28 04:45:56,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 377.5MB. Free memory is still 327.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 229.02ms. Allocated memory is still 377.5MB. Free memory was 315.9MB in the beginning and 304.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.78ms. Allocated memory is still 377.5MB. Free memory was 304.2MB in the beginning and 302.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.41ms. Allocated memory is still 377.5MB. Free memory was 302.1MB in the beginning and 300.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 537.29ms. Allocated memory was 377.5MB in the beginning and 541.1MB in the end (delta: 163.6MB). Free memory was 300.3MB in the beginning and 490.2MB in the end (delta: -189.9MB). Peak memory consumption was 14.2MB. Max. memory is 16.0GB. * TraceAbstraction took 845574.82ms. Allocated memory was 541.1MB in the beginning and 6.7GB in the end (delta: 6.1GB). Free memory was 489.1MB in the beginning and 2.0GB in the end (delta: -1.5GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 160 PlacesBefore, 25 PlacesAfterwards, 168 TransitionsBefore, 23 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 7 FixpointIterations, 111 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 5 ConcurrentYvCompositions, 10 ChoiceCompositions, 174 TotalNumberOfCompositions, 1199 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 924, independent: 858, independent conditional: 0, independent unconditional: 858, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 386, independent: 376, independent conditional: 0, independent unconditional: 376, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 924, independent: 482, independent conditional: 0, independent unconditional: 482, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 386, unknown conditional: 0, unknown unconditional: 386] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 58ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 58ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 58ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 188 locations, 3 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: 845.5s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 100.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 2578 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2578 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1731 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 368 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7498 IncrementalHoareTripleChecker+Invalid, 9620 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 368 mSolverCounterUnsat, 5 mSDtfsCounter, 7498 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 779 GetRequests, 363 SyntacticMatches, 16 SemanticMatches, 400 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 6420 ImplicationChecksByTransitivity, 26.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38835occurred in iteration=15, InterpolantAutomatonStates: 281, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 68.1s InterpolantComputationTime, 626 NumberOfCodeBlocks, 626 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 821 ConstructedInterpolants, 43 QuantifiedInterpolants, 9853 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2809 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 157/256 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