/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-max-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:40:10,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:40:10,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:40:10,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:40:10,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:40:10,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:40:10,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:40:10,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:40:10,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:40:10,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:40:10,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:40:10,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:40:10,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:40:10,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:40:10,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:40:10,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:40:10,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:40:10,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:40:10,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:40:10,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:40:10,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:40:10,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:40:10,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:40:10,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:40:10,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:40:10,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:40:10,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:40:10,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:40:10,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:40:10,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:40:10,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:40:10,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:40:10,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:40:10,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:40:10,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:40:10,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:40:10,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:40:10,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:40:10,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:40:10,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:40:10,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:40:10,993 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 04:40:11,016 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:40:11,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:40:11,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:40:11,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:40:11,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:40:11,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:40:11,018 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:40:11,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:40:11,018 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:40:11,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:40:11,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:40:11,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:40:11,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:40:11,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:40:11,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:40:11,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:40:11,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:40:11,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:40:11,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:40:11,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:40:11,223 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:40:11,223 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:40:11,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2023-01-28 04:40:12,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:40:12,299 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:40:12,299 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2023-01-28 04:40:12,303 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf907a43e/94ff228f6d974c1e97d42e00d62f221c/FLAG4ae990ecb [2023-01-28 04:40:12,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf907a43e/94ff228f6d974c1e97d42e00d62f221c [2023-01-28 04:40:12,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:40:12,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:40:12,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:40:12,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:40:12,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:40:12,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f7ef2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12, skipping insertion in model container [2023-01-28 04:40:12,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:40:12,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:40:12,449 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-max-array.wvr.c[2553,2566] [2023-01-28 04:40:12,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:40:12,462 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:40:12,494 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-max-array.wvr.c[2553,2566] [2023-01-28 04:40:12,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:40:12,502 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:40:12,502 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:40:12,506 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:40:12,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12 WrapperNode [2023-01-28 04:40:12,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:40:12,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:40:12,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:40:12,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:40:12,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,536 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-01-28 04:40:12,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:40:12,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:40:12,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:40:12,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:40:12,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:40:12,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:40:12,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:40:12,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:40:12,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (1/1) ... [2023-01-28 04:40:12,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:40:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:12,590 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 04:40:12,614 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 04:40:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:40:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:40:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:40:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:40:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:40:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:40:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:40:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:40:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:40:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:40:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:40:12,629 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 04:40:12,750 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:40:12,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:40:12,966 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:40:13,006 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:40:13,006 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:40:13,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:40:13 BoogieIcfgContainer [2023-01-28 04:40:13,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:40:13,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:40:13,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:40:13,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:40:13,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:40:12" (1/3) ... [2023-01-28 04:40:13,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eca24e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:40:13, skipping insertion in model container [2023-01-28 04:40:13,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:40:12" (2/3) ... [2023-01-28 04:40:13,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eca24e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:40:13, skipping insertion in model container [2023-01-28 04:40:13,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:40:13" (3/3) ... [2023-01-28 04:40:13,013 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-01-28 04:40:13,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:40:13,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:40:13,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:40:13,092 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:40:13,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 144 transitions, 312 flow [2023-01-28 04:40:13,164 INFO L130 PetriNetUnfolder]: 12/141 cut-off events. [2023-01-28 04:40:13,164 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:40:13,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 12/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 04:40:13,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 144 transitions, 312 flow [2023-01-28 04:40:13,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 131 transitions, 280 flow [2023-01-28 04:40:13,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:40:13,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 131 transitions, 280 flow [2023-01-28 04:40:13,181 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 131 transitions, 280 flow [2023-01-28 04:40:13,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 280 flow [2023-01-28 04:40:13,205 INFO L130 PetriNetUnfolder]: 12/131 cut-off events. [2023-01-28 04:40:13,205 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:40:13,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 12/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 04:40:13,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 04:40:16,929 INFO L134 LiptonReduction]: Checked pairs total: 1615 [2023-01-28 04:40:16,929 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-01-28 04:40:16,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:40:16,949 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;@de852a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:40:16,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:40:16,958 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-28 04:40:16,958 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:40:16,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:16,959 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] [2023-01-28 04:40:16,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:16,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1107178468, now seen corresponding path program 1 times [2023-01-28 04:40:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277400179] [2023-01-28 04:40:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:17,524 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 04:40:17,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277400179] [2023-01-28 04:40:17,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277400179] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:40:17,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:40:17,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:40:17,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720714147] [2023-01-28 04:40:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:40:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:40:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:40:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:40:17,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 273 [2023-01-28 04:40:17,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 04:40:17,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:17,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 273 [2023-01-28 04:40:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:17,798 INFO L130 PetriNetUnfolder]: 679/943 cut-off events. [2023-01-28 04:40:17,798 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 04:40:17,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 943 events. 679/943 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3493 event pairs, 265 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-01-28 04:40:17,804 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 55 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-01-28 04:40:17,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 304 flow [2023-01-28 04:40:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:40:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:40:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 765 transitions. [2023-01-28 04:40:17,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003139717425432 [2023-01-28 04:40:17,820 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 765 transitions. [2023-01-28 04:40:17,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 765 transitions. [2023-01-28 04:40:17,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:17,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 765 transitions. [2023-01-28 04:40:17,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 04:40:17,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 04:40:17,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 04:40:17,835 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 7 states and 765 transitions. [2023-01-28 04:40:17,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 304 flow [2023-01-28 04:40:17,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 65 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 04:40:17,840 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 97 flow [2023-01-28 04:40:17,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-01-28 04:40:17,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-01-28 04:40:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 97 flow [2023-01-28 04:40:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 04:40:17,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:17,844 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 04:40:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:40:17,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:17,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1966737023, now seen corresponding path program 1 times [2023-01-28 04:40:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957242650] [2023-01-28 04:40:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:17,947 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 04:40:17,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957242650] [2023-01-28 04:40:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957242650] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:40:17,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:40:17,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:40:17,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339522451] [2023-01-28 04:40:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:40:17,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:40:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:40:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:40:17,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 273 [2023-01-28 04:40:17,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:40:17,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:17,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 273 [2023-01-28 04:40:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:18,054 INFO L130 PetriNetUnfolder]: 342/475 cut-off events. [2023-01-28 04:40:18,055 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-01-28 04:40:18,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 475 events. 342/475 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1468 event pairs, 133 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1137. Up to 371 conditions per place. [2023-01-28 04:40:18,058 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 30 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-01-28 04:40:18,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 168 flow [2023-01-28 04:40:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:40:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:40:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2023-01-28 04:40:18,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3965201465201465 [2023-01-28 04:40:18,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 433 transitions. [2023-01-28 04:40:18,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 433 transitions. [2023-01-28 04:40:18,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:18,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 433 transitions. [2023-01-28 04:40:18,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 04:40:18,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states 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 04:40:18,063 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states 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 04:40:18,063 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 97 flow. Second operand 4 states and 433 transitions. [2023-01-28 04:40:18,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 168 flow [2023-01-28 04:40:18,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 157 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 04:40:18,066 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 77 flow [2023-01-28 04:40:18,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 04:40:18,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-01-28 04:40:18,067 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 77 flow [2023-01-28 04:40:18,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:40:18,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:18,067 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 04:40:18,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:40:18,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:18,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -805618038, now seen corresponding path program 1 times [2023-01-28 04:40:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390076529] [2023-01-28 04:40:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:18,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390076529] [2023-01-28 04:40:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390076529] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846291838] [2023-01-28 04:40:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:18,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:18,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:18,159 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 04:40:18,176 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 04:40:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:18,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:40:18,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:18,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:18,326 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 04:40:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846291838] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:18,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:40:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 04:40:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539237263] [2023-01-28 04:40:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:40:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:40:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:40:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 04:40:18,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-01-28 04:40:18,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 04:40:18,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:18,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-01-28 04:40:18,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:18,408 INFO L130 PetriNetUnfolder]: 311/453 cut-off events. [2023-01-28 04:40:18,409 INFO L131 PetriNetUnfolder]: For 117/143 co-relation queries the response was YES. [2023-01-28 04:40:18,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 453 events. 311/453 cut-off events. For 117/143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1443 event pairs, 73 based on Foata normal form. 26/371 useless extension candidates. Maximal degree in co-relation 1011. Up to 349 conditions per place. [2023-01-28 04:40:18,411 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 31 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-01-28 04:40:18,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 177 flow [2023-01-28 04:40:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:40:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:40:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-01-28 04:40:18,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40586080586080586 [2023-01-28 04:40:18,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-01-28 04:40:18,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-01-28 04:40:18,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:18,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-01-28 04:40:18,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 04:40:18,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 04:40:18,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 04:40:18,417 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 77 flow. Second operand 5 states and 554 transitions. [2023-01-28 04:40:18,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 177 flow [2023-01-28 04:40:18,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 04:40:18,419 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 88 flow [2023-01-28 04:40:18,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-01-28 04:40:18,419 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 04:40:18,419 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 88 flow [2023-01-28 04:40:18,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 04:40:18,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:18,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:18,430 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 04:40:18,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:18,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:18,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1619003621, now seen corresponding path program 1 times [2023-01-28 04:40:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:18,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059492025] [2023-01-28 04:40:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:19,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059492025] [2023-01-28 04:40:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059492025] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61509716] [2023-01-28 04:40:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:19,197 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 04:40:19,199 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 04:40:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:19,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:40:19,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:19,615 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:40:19,616 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 59 [2023-01-28 04:40:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:19,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:19,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:19,842 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 85 treesize of output 45 [2023-01-28 04:40:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:20,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61509716] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:20,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-01-28 04:40:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151699880] [2023-01-28 04:40:20,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:20,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:40:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:40:20,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:40:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 273 [2023-01-28 04:40:20,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 88 flow. Second operand has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 04:40:20,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:20,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 273 [2023-01-28 04:40:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:20,666 INFO L130 PetriNetUnfolder]: 679/981 cut-off events. [2023-01-28 04:40:20,666 INFO L131 PetriNetUnfolder]: For 321/321 co-relation queries the response was YES. [2023-01-28 04:40:20,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 981 events. 679/981 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3670 event pairs, 84 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 2286. Up to 677 conditions per place. [2023-01-28 04:40:20,671 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 73 selfloop transitions, 35 changer transitions 4/113 dead transitions. [2023-01-28 04:40:20,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 113 transitions, 564 flow [2023-01-28 04:40:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:40:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:40:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1175 transitions. [2023-01-28 04:40:20,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3310791772330234 [2023-01-28 04:40:20,674 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1175 transitions. [2023-01-28 04:40:20,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1175 transitions. [2023-01-28 04:40:20,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:20,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1175 transitions. [2023-01-28 04:40:20,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.38461538461539) internal successors, (1175), 13 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:20,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states 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 04:40:20,680 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states 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 04:40:20,680 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 88 flow. Second operand 13 states and 1175 transitions. [2023-01-28 04:40:20,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 113 transitions, 564 flow [2023-01-28 04:40:20,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 113 transitions, 536 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-28 04:40:20,683 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 304 flow [2023-01-28 04:40:20,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=304, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2023-01-28 04:40:20,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-01-28 04:40:20,683 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 304 flow [2023-01-28 04:40:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 04:40:20,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:20,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:20,693 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 04:40:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 04:40:20,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:20,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1587343155, now seen corresponding path program 2 times [2023-01-28 04:40:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530977148] [2023-01-28 04:40:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530977148] [2023-01-28 04:40:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530977148] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571657297] [2023-01-28 04:40:21,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:40:21,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:21,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:21,339 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 04:40:21,340 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 04:40:21,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:21,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:21,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:40:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:21,644 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:21,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:21,646 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 64 treesize of output 37 [2023-01-28 04:40:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:21,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:21,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:21,803 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 85 treesize of output 45 [2023-01-28 04:40:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571657297] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:21,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-01-28 04:40:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794531192] [2023-01-28 04:40:21,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:21,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 04:40:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:21,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 04:40:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-01-28 04:40:21,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 273 [2023-01-28 04:40:21,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 304 flow. Second operand has 25 states, 25 states have (on average 81.52) internal successors, (2038), 25 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states 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 04:40:21,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:21,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 273 [2023-01-28 04:40:21,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:22,784 INFO L130 PetriNetUnfolder]: 1001/1468 cut-off events. [2023-01-28 04:40:22,784 INFO L131 PetriNetUnfolder]: For 1349/1349 co-relation queries the response was YES. [2023-01-28 04:40:22,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4806 conditions, 1468 events. 1001/1468 cut-off events. For 1349/1349 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5408 event pairs, 136 based on Foata normal form. 2/1464 useless extension candidates. Maximal degree in co-relation 4542. Up to 1033 conditions per place. [2023-01-28 04:40:22,792 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 105 selfloop transitions, 54 changer transitions 7/166 dead transitions. [2023-01-28 04:40:22,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 166 transitions, 1007 flow [2023-01-28 04:40:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:40:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:40:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1561 transitions. [2023-01-28 04:40:22,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176638176638177 [2023-01-28 04:40:22,796 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1561 transitions. [2023-01-28 04:40:22,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1561 transitions. [2023-01-28 04:40:22,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:22,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1561 transitions. [2023-01-28 04:40:22,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 86.72222222222223) internal successors, (1561), 18 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states 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 04:40:22,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 04:40:22,806 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 04:40:22,806 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 304 flow. Second operand 18 states and 1561 transitions. [2023-01-28 04:40:22,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 166 transitions, 1007 flow [2023-01-28 04:40:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 166 transitions, 993 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 04:40:22,815 INFO L231 Difference]: Finished difference. Result has 74 places, 97 transitions, 664 flow [2023-01-28 04:40:22,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=664, PETRI_PLACES=74, PETRI_TRANSITIONS=97} [2023-01-28 04:40:22,816 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-01-28 04:40:22,816 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 97 transitions, 664 flow [2023-01-28 04:40:22,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.52) internal successors, (2038), 25 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states 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 04:40:22,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:22,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:22,824 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 04:40:23,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:23,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:23,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1702762413, now seen corresponding path program 3 times [2023-01-28 04:40:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172706155] [2023-01-28 04:40:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172706155] [2023-01-28 04:40:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172706155] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364708317] [2023-01-28 04:40:23,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:40:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:23,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:23,643 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 04:40:23,645 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 04:40:23,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:40:23,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:23,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 04:40:23,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:24,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:24,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:24,003 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 64 treesize of output 37 [2023-01-28 04:40:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:24,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:24,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:24,156 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 85 treesize of output 45 [2023-01-28 04:40:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:24,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364708317] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:24,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:24,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 24 [2023-01-28 04:40:24,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136047406] [2023-01-28 04:40:24,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 04:40:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 04:40:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2023-01-28 04:40:24,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 273 [2023-01-28 04:40:24,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 97 transitions, 664 flow. Second operand has 26 states, 26 states have (on average 71.42307692307692) internal successors, (1857), 26 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states 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 04:40:24,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:24,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 273 [2023-01-28 04:40:24,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:25,411 INFO L130 PetriNetUnfolder]: 1399/2097 cut-off events. [2023-01-28 04:40:25,411 INFO L131 PetriNetUnfolder]: For 3789/3789 co-relation queries the response was YES. [2023-01-28 04:40:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8288 conditions, 2097 events. 1399/2097 cut-off events. For 3789/3789 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8873 event pairs, 132 based on Foata normal form. 3/2100 useless extension candidates. Maximal degree in co-relation 8253. Up to 1224 conditions per place. [2023-01-28 04:40:25,426 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 161 selfloop transitions, 107 changer transitions 5/273 dead transitions. [2023-01-28 04:40:25,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 273 transitions, 2012 flow [2023-01-28 04:40:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 04:40:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 04:40:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1718 transitions. [2023-01-28 04:40:25,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.286047286047286 [2023-01-28 04:40:25,431 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1718 transitions. [2023-01-28 04:40:25,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1718 transitions. [2023-01-28 04:40:25,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:25,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1718 transitions. [2023-01-28 04:40:25,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 78.0909090909091) internal successors, (1718), 22 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 04:40:25,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states 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 04:40:25,440 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states 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 04:40:25,440 INFO L175 Difference]: Start difference. First operand has 74 places, 97 transitions, 664 flow. Second operand 22 states and 1718 transitions. [2023-01-28 04:40:25,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 273 transitions, 2012 flow [2023-01-28 04:40:25,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 273 transitions, 1953 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 04:40:25,458 INFO L231 Difference]: Finished difference. Result has 104 places, 159 transitions, 1411 flow [2023-01-28 04:40:25,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1411, PETRI_PLACES=104, PETRI_TRANSITIONS=159} [2023-01-28 04:40:25,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2023-01-28 04:40:25,459 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 159 transitions, 1411 flow [2023-01-28 04:40:25,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 71.42307692307692) internal successors, (1857), 26 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states 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 04:40:25,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:25,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:25,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:25,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:25,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1571153735, now seen corresponding path program 4 times [2023-01-28 04:40:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649248771] [2023-01-28 04:40:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:26,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:26,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649248771] [2023-01-28 04:40:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649248771] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:26,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045302671] [2023-01-28 04:40:26,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:40:26,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:26,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:26,163 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 04:40:26,164 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 04:40:26,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:40:26,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:26,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 04:40:26,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:26,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:26,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-28 04:40:26,559 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:26,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:26,561 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 64 treesize of output 37 [2023-01-28 04:40:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:26,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:26,694 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_261 (Array Int Int))) (< c_~max2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_261) c_~A~0.base) .cse0)))) (forall ((v_ArrVal_261 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_261) c_~A~0.base) .cse0))) (or (= c_~max1~0 .cse1) (<= .cse1 c_~max2~0)))))) is different from false [2023-01-28 04:40:26,717 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:26,717 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 139 treesize of output 99 [2023-01-28 04:40:26,735 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 69 treesize of output 57 [2023-01-28 04:40:26,738 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 57 treesize of output 51 [2023-01-28 04:40:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-28 04:40:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045302671] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:26,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:26,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-01-28 04:40:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129924374] [2023-01-28 04:40:26,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:40:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:40:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=592, Unknown=1, NotChecked=50, Total=756 [2023-01-28 04:40:26,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 273 [2023-01-28 04:40:26,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 159 transitions, 1411 flow. Second operand has 28 states, 28 states have (on average 77.25) internal successors, (2163), 28 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 04:40:26,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:26,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 273 [2023-01-28 04:40:26,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:28,098 INFO L130 PetriNetUnfolder]: 1794/2701 cut-off events. [2023-01-28 04:40:28,098 INFO L131 PetriNetUnfolder]: For 9600/9600 co-relation queries the response was YES. [2023-01-28 04:40:28,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13200 conditions, 2701 events. 1794/2701 cut-off events. For 9600/9600 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12296 event pairs, 168 based on Foata normal form. 1/2702 useless extension candidates. Maximal degree in co-relation 13154. Up to 1507 conditions per place. [2023-01-28 04:40:28,113 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 175 selfloop transitions, 150 changer transitions 4/329 dead transitions. [2023-01-28 04:40:28,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 329 transitions, 3191 flow [2023-01-28 04:40:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:40:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:40:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1763 transitions. [2023-01-28 04:40:28,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3075178789464504 [2023-01-28 04:40:28,117 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1763 transitions. [2023-01-28 04:40:28,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1763 transitions. [2023-01-28 04:40:28,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:28,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1763 transitions. [2023-01-28 04:40:28,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 83.95238095238095) internal successors, (1763), 21 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states 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 04:40:28,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 04:40:28,127 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 04:40:28,127 INFO L175 Difference]: Start difference. First operand has 104 places, 159 transitions, 1411 flow. Second operand 21 states and 1763 transitions. [2023-01-28 04:40:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 329 transitions, 3191 flow [2023-01-28 04:40:28,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 329 transitions, 3065 flow, removed 55 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:28,152 INFO L231 Difference]: Finished difference. Result has 127 places, 222 transitions, 2379 flow [2023-01-28 04:40:28,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2379, PETRI_PLACES=127, PETRI_TRANSITIONS=222} [2023-01-28 04:40:28,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2023-01-28 04:40:28,154 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 222 transitions, 2379 flow [2023-01-28 04:40:28,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.25) internal successors, (2163), 28 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 04:40:28,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:28,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:28,165 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 04:40:28,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:28,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:28,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash 353698307, now seen corresponding path program 5 times [2023-01-28 04:40:28,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128399331] [2023-01-28 04:40:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:28,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128399331] [2023-01-28 04:40:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128399331] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:28,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292657074] [2023-01-28 04:40:28,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:40:28,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:28,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:28,757 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 04:40:28,759 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 04:40:28,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:40:28,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:28,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 04:40:28,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:29,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:29,059 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 77 treesize of output 71 [2023-01-28 04:40:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:29,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:29,526 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:29,526 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 73 treesize of output 41 [2023-01-28 04:40:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292657074] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:29,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 20 [2023-01-28 04:40:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217875588] [2023-01-28 04:40:29,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:29,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 04:40:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 04:40:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-01-28 04:40:29,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 273 [2023-01-28 04:40:29,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 222 transitions, 2379 flow. Second operand has 22 states, 22 states have (on average 84.68181818181819) internal successors, (1863), 22 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 04:40:29,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:29,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 273 [2023-01-28 04:40:29,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:31,380 INFO L130 PetriNetUnfolder]: 2493/3915 cut-off events. [2023-01-28 04:40:31,380 INFO L131 PetriNetUnfolder]: For 20392/20444 co-relation queries the response was YES. [2023-01-28 04:40:31,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20768 conditions, 3915 events. 2493/3915 cut-off events. For 20392/20444 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21794 event pairs, 185 based on Foata normal form. 38/3940 useless extension candidates. Maximal degree in co-relation 20714. Up to 2338 conditions per place. [2023-01-28 04:40:31,408 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 217 selfloop transitions, 197 changer transitions 9/429 dead transitions. [2023-01-28 04:40:31,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 429 transitions, 4902 flow [2023-01-28 04:40:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 04:40:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 04:40:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2148 transitions. [2023-01-28 04:40:31,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32783882783882784 [2023-01-28 04:40:31,414 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2148 transitions. [2023-01-28 04:40:31,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2148 transitions. [2023-01-28 04:40:31,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:31,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2148 transitions. [2023-01-28 04:40:31,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 89.5) internal successors, (2148), 24 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states 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 04:40:31,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 273.0) internal successors, (6825), 25 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states 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 04:40:31,426 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 273.0) internal successors, (6825), 25 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states 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 04:40:31,427 INFO L175 Difference]: Start difference. First operand has 127 places, 222 transitions, 2379 flow. Second operand 24 states and 2148 transitions. [2023-01-28 04:40:31,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 429 transitions, 4902 flow [2023-01-28 04:40:31,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 429 transitions, 4594 flow, removed 142 selfloop flow, removed 5 redundant places. [2023-01-28 04:40:31,466 INFO L231 Difference]: Finished difference. Result has 154 places, 337 transitions, 3925 flow [2023-01-28 04:40:31,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3925, PETRI_PLACES=154, PETRI_TRANSITIONS=337} [2023-01-28 04:40:31,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2023-01-28 04:40:31,467 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 337 transitions, 3925 flow [2023-01-28 04:40:31,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.68181818181819) internal successors, (1863), 22 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states 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 04:40:31,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:31,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:31,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:31,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:31,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:31,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -536441915, now seen corresponding path program 6 times [2023-01-28 04:40:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:31,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258580295] [2023-01-28 04:40:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:32,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:32,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258580295] [2023-01-28 04:40:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258580295] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:32,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875416673] [2023-01-28 04:40:32,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:40:32,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:32,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:32,026 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 04:40:32,028 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 04:40:32,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:40:32,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:32,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 04:40:32,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:32,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2023-01-28 04:40:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:32,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:32,421 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:32,422 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 73 treesize of output 45 [2023-01-28 04:40:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:32,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875416673] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:32,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:32,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-01-28 04:40:32,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881491184] [2023-01-28 04:40:32,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:32,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 04:40:32,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 04:40:32,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-01-28 04:40:32,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 273 [2023-01-28 04:40:32,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 337 transitions, 3925 flow. Second operand has 22 states, 22 states have (on average 81.77272727272727) internal successors, (1799), 22 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states 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 04:40:32,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:32,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 273 [2023-01-28 04:40:32,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:33,574 INFO L130 PetriNetUnfolder]: 2826/4401 cut-off events. [2023-01-28 04:40:33,574 INFO L131 PetriNetUnfolder]: For 29259/29259 co-relation queries the response was YES. [2023-01-28 04:40:33,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25243 conditions, 4401 events. 2826/4401 cut-off events. For 29259/29259 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23294 event pairs, 721 based on Foata normal form. 2/4403 useless extension candidates. Maximal degree in co-relation 25180. Up to 3860 conditions per place. [2023-01-28 04:40:33,598 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 278 selfloop transitions, 135 changer transitions 2/415 dead transitions. [2023-01-28 04:40:33,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 415 transitions, 5444 flow [2023-01-28 04:40:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:40:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:40:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1544 transitions. [2023-01-28 04:40:33,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3142043142043142 [2023-01-28 04:40:33,602 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1544 transitions. [2023-01-28 04:40:33,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1544 transitions. [2023-01-28 04:40:33,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:33,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1544 transitions. [2023-01-28 04:40:33,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 85.77777777777777) internal successors, (1544), 18 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states 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 04:40:33,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 04:40:33,608 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 04:40:33,608 INFO L175 Difference]: Start difference. First operand has 154 places, 337 transitions, 3925 flow. Second operand 18 states and 1544 transitions. [2023-01-28 04:40:33,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 415 transitions, 5444 flow [2023-01-28 04:40:33,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 415 transitions, 4874 flow, removed 222 selfloop flow, removed 7 redundant places. [2023-01-28 04:40:33,676 INFO L231 Difference]: Finished difference. Result has 168 places, 363 transitions, 4059 flow [2023-01-28 04:40:33,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4059, PETRI_PLACES=168, PETRI_TRANSITIONS=363} [2023-01-28 04:40:33,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2023-01-28 04:40:33,677 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 363 transitions, 4059 flow [2023-01-28 04:40:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 81.77272727272727) internal successors, (1799), 22 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states 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 04:40:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:33,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:33,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:33,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:33,883 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:33,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash 820266829, now seen corresponding path program 7 times [2023-01-28 04:40:33,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:33,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526821338] [2023-01-28 04:40:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:33,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:34,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526821338] [2023-01-28 04:40:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526821338] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172699072] [2023-01-28 04:40:34,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:40:34,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:34,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:34,433 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 04:40:34,435 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 04:40:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:34,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:40:34,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:34,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2023-01-28 04:40:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:34,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:34,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:34,836 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 85 treesize of output 45 [2023-01-28 04:40:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172699072] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:34,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2023-01-28 04:40:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435008648] [2023-01-28 04:40:34,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:34,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 04:40:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 04:40:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-01-28 04:40:34,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-01-28 04:40:34,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 363 transitions, 4059 flow. Second operand has 24 states, 24 states have (on average 74.45833333333333) internal successors, (1787), 24 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states 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 04:40:34,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:34,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-01-28 04:40:34,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:35,919 INFO L130 PetriNetUnfolder]: 2667/4232 cut-off events. [2023-01-28 04:40:35,919 INFO L131 PetriNetUnfolder]: For 22344/22381 co-relation queries the response was YES. [2023-01-28 04:40:35,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22983 conditions, 4232 events. 2667/4232 cut-off events. For 22344/22381 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23723 event pairs, 570 based on Foata normal form. 24/4240 useless extension candidates. Maximal degree in co-relation 22917. Up to 3867 conditions per place. [2023-01-28 04:40:35,945 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 289 selfloop transitions, 110 changer transitions 1/410 dead transitions. [2023-01-28 04:40:35,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 410 transitions, 5166 flow [2023-01-28 04:40:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:40:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:40:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 875 transitions. [2023-01-28 04:40:35,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2913752913752914 [2023-01-28 04:40:35,947 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 875 transitions. [2023-01-28 04:40:35,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 875 transitions. [2023-01-28 04:40:35,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:35,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 875 transitions. [2023-01-28 04:40:35,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.54545454545455) internal successors, (875), 11 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 04:40:35,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states 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 04:40:35,950 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states 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 04:40:35,950 INFO L175 Difference]: Start difference. First operand has 168 places, 363 transitions, 4059 flow. Second operand 11 states and 875 transitions. [2023-01-28 04:40:35,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 410 transitions, 5166 flow [2023-01-28 04:40:35,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 410 transitions, 5000 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-28 04:40:36,001 INFO L231 Difference]: Finished difference. Result has 173 places, 375 transitions, 4307 flow [2023-01-28 04:40:36,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4307, PETRI_PLACES=173, PETRI_TRANSITIONS=375} [2023-01-28 04:40:36,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2023-01-28 04:40:36,002 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 375 transitions, 4307 flow [2023-01-28 04:40:36,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.45833333333333) internal successors, (1787), 24 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states 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 04:40:36,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:36,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:36,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:36,207 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,SelfDestructingSolverStorable9 [2023-01-28 04:40:36,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:36,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash 663032483, now seen corresponding path program 8 times [2023-01-28 04:40:36,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:36,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425767251] [2023-01-28 04:40:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:36,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:36,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425767251] [2023-01-28 04:40:36,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425767251] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:36,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296790667] [2023-01-28 04:40:36,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:40:36,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:36,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:36,727 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 04:40:36,729 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 04:40:36,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:36,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:36,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 04:40:36,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:37,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:37,005 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 34 treesize of output 32 [2023-01-28 04:40:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:37,093 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 34 treesize of output 32 [2023-01-28 04:40:37,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:37,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:37,210 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 64 treesize of output 37 [2023-01-28 04:40:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:37,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:37,438 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_439 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_439) c_~A~0.base) .cse1))) (or (= c_~max1~0 .cse0) (<= .cse0 c_~max2~0)))) (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_439 (Array Int Int))) (< c_~max2~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_439) c_~A~0.base) .cse1)))))) is different from false [2023-01-28 04:40:37,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:37,453 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 409 treesize of output 353 [2023-01-28 04:40:37,460 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 183 treesize of output 171 [2023-01-28 04:40:37,464 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 171 treesize of output 165 [2023-01-28 04:40:37,468 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 165 treesize of output 153 [2023-01-28 04:40:37,473 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 153 treesize of output 129 [2023-01-28 04:40:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296790667] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:37,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-01-28 04:40:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812702445] [2023-01-28 04:40:37,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:37,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:40:37,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:40:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=592, Unknown=8, NotChecked=50, Total=756 [2023-01-28 04:40:37,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 273 [2023-01-28 04:40:37,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 375 transitions, 4307 flow. Second operand has 28 states, 28 states have (on average 77.14285714285714) internal successors, (2160), 28 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 04:40:37,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:37,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 273 [2023-01-28 04:40:37,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:43,226 INFO L130 PetriNetUnfolder]: 2910/4621 cut-off events. [2023-01-28 04:40:43,226 INFO L131 PetriNetUnfolder]: For 26057/26173 co-relation queries the response was YES. [2023-01-28 04:40:43,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25525 conditions, 4621 events. 2910/4621 cut-off events. For 26057/26173 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26544 event pairs, 407 based on Foata normal form. 42/4649 useless extension candidates. Maximal degree in co-relation 25456. Up to 3074 conditions per place. [2023-01-28 04:40:43,254 INFO L137 encePairwiseOnDemand]: 262/273 looper letters, 248 selfloop transitions, 201 changer transitions 4/463 dead transitions. [2023-01-28 04:40:43,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 463 transitions, 5800 flow [2023-01-28 04:40:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:40:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:40:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1102 transitions. [2023-01-28 04:40:43,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31051000281769514 [2023-01-28 04:40:43,256 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1102 transitions. [2023-01-28 04:40:43,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1102 transitions. [2023-01-28 04:40:43,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:43,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1102 transitions. [2023-01-28 04:40:43,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.76923076923077) internal successors, (1102), 13 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states 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 04:40:43,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states 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 04:40:43,260 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states 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 04:40:43,260 INFO L175 Difference]: Start difference. First operand has 173 places, 375 transitions, 4307 flow. Second operand 13 states and 1102 transitions. [2023-01-28 04:40:43,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 463 transitions, 5800 flow [2023-01-28 04:40:43,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 463 transitions, 5649 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 04:40:43,328 INFO L231 Difference]: Finished difference. Result has 183 places, 398 transitions, 5003 flow [2023-01-28 04:40:43,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4156, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5003, PETRI_PLACES=183, PETRI_TRANSITIONS=398} [2023-01-28 04:40:43,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2023-01-28 04:40:43,329 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 398 transitions, 5003 flow [2023-01-28 04:40:43,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.14285714285714) internal successors, (2160), 28 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 04:40:43,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:43,329 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 04:40:43,336 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 04:40:43,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:43,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:43,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1650774356, now seen corresponding path program 9 times [2023-01-28 04:40:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200736199] [2023-01-28 04:40:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200736199] [2023-01-28 04:40:43,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200736199] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435278444] [2023-01-28 04:40:43,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:40:43,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:43,609 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 04:40:43,611 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 04:40:43,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:40:43,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:43,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:40:43,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:43,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435278444] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:43,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 04:40:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286530863] [2023-01-28 04:40:43,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:43,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:40:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:40:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:40:43,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-01-28 04:40:43,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 398 transitions, 5003 flow. Second operand has 14 states, 14 states have (on average 106.35714285714286) internal successors, (1489), 14 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states 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 04:40:43,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:43,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-01-28 04:40:43,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:44,509 INFO L130 PetriNetUnfolder]: 2867/4707 cut-off events. [2023-01-28 04:40:44,510 INFO L131 PetriNetUnfolder]: For 39136/39461 co-relation queries the response was YES. [2023-01-28 04:40:44,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27443 conditions, 4707 events. 2867/4707 cut-off events. For 39136/39461 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 28953 event pairs, 726 based on Foata normal form. 420/5018 useless extension candidates. Maximal degree in co-relation 27370. Up to 2543 conditions per place. [2023-01-28 04:40:44,540 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 355 selfloop transitions, 39 changer transitions 1/427 dead transitions. [2023-01-28 04:40:44,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 427 transitions, 5969 flow [2023-01-28 04:40:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:40:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:40:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 904 transitions. [2023-01-28 04:40:44,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2023-01-28 04:40:44,542 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 904 transitions. [2023-01-28 04:40:44,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 904 transitions. [2023-01-28 04:40:44,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:44,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 904 transitions. [2023-01-28 04:40:44,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 04:40:44,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states 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 04:40:44,545 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states 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 04:40:44,545 INFO L175 Difference]: Start difference. First operand has 183 places, 398 transitions, 5003 flow. Second operand 8 states and 904 transitions. [2023-01-28 04:40:44,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 427 transitions, 5969 flow [2023-01-28 04:40:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 427 transitions, 5756 flow, removed 37 selfloop flow, removed 8 redundant places. [2023-01-28 04:40:44,619 INFO L231 Difference]: Finished difference. Result has 186 places, 366 transitions, 4532 flow [2023-01-28 04:40:44,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4532, PETRI_PLACES=186, PETRI_TRANSITIONS=366} [2023-01-28 04:40:44,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-01-28 04:40:44,619 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 366 transitions, 4532 flow [2023-01-28 04:40:44,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.35714285714286) internal successors, (1489), 14 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states 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 04:40:44,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:44,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:44,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 04:40:44,825 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,SelfDestructingSolverStorable11 [2023-01-28 04:40:44,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:44,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1159546519, now seen corresponding path program 1 times [2023-01-28 04:40:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:44,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777622235] [2023-01-28 04:40:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:44,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777622235] [2023-01-28 04:40:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777622235] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759424844] [2023-01-28 04:40:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:44,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:44,898 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 04:40:44,903 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 04:40:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:44,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:40:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:45,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759424844] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:45,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:45,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 04:40:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175256812] [2023-01-28 04:40:45,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 04:40:45,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 04:40:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:40:45,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:45,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 366 transitions, 4532 flow. Second operand has 16 states, 16 states have (on average 99.3125) internal successors, (1589), 16 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 04:40:45,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:45,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:45,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:45,826 INFO L130 PetriNetUnfolder]: 2773/4666 cut-off events. [2023-01-28 04:40:45,826 INFO L131 PetriNetUnfolder]: For 38674/38698 co-relation queries the response was YES. [2023-01-28 04:40:45,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26816 conditions, 4666 events. 2773/4666 cut-off events. For 38674/38698 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28678 event pairs, 315 based on Foata normal form. 339/4994 useless extension candidates. Maximal degree in co-relation 26739. Up to 2009 conditions per place. [2023-01-28 04:40:45,856 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 391 selfloop transitions, 44 changer transitions 20/470 dead transitions. [2023-01-28 04:40:45,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 470 transitions, 6221 flow [2023-01-28 04:40:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:40:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:40:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1163 transitions. [2023-01-28 04:40:45,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38727938727938727 [2023-01-28 04:40:45,858 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1163 transitions. [2023-01-28 04:40:45,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1163 transitions. [2023-01-28 04:40:45,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:45,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1163 transitions. [2023-01-28 04:40:45,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 105.72727272727273) internal successors, (1163), 11 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states 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 04:40:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states 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 04:40:45,862 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states 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 04:40:45,862 INFO L175 Difference]: Start difference. First operand has 186 places, 366 transitions, 4532 flow. Second operand 11 states and 1163 transitions. [2023-01-28 04:40:45,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 470 transitions, 6221 flow [2023-01-28 04:40:45,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 470 transitions, 6216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 04:40:45,956 INFO L231 Difference]: Finished difference. Result has 200 places, 298 transitions, 3944 flow [2023-01-28 04:40:45,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3659, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3944, PETRI_PLACES=200, PETRI_TRANSITIONS=298} [2023-01-28 04:40:45,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2023-01-28 04:40:45,956 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 298 transitions, 3944 flow [2023-01-28 04:40:45,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 99.3125) internal successors, (1589), 16 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 04:40:45,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:45,957 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 04:40:45,961 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 04:40:46,157 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,SelfDestructingSolverStorable12 [2023-01-28 04:40:46,157 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:46,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash -826576938, now seen corresponding path program 10 times [2023-01-28 04:40:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43871336] [2023-01-28 04:40:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:46,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43871336] [2023-01-28 04:40:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43871336] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:46,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033602782] [2023-01-28 04:40:46,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:40:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:46,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:46,282 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 04:40:46,284 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 04:40:46,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:40:46,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:46,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 04:40:46,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:46,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033602782] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:46,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:46,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2023-01-28 04:40:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455150505] [2023-01-28 04:40:46,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:46,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:40:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:40:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:40:46,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:46,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 298 transitions, 3944 flow. Second operand has 17 states, 17 states have (on average 100.47058823529412) internal successors, (1708), 17 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 04:40:46,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:46,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:46,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:47,482 INFO L130 PetriNetUnfolder]: 2231/3931 cut-off events. [2023-01-28 04:40:47,483 INFO L131 PetriNetUnfolder]: For 47227/47254 co-relation queries the response was YES. [2023-01-28 04:40:47,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25351 conditions, 3931 events. 2231/3931 cut-off events. For 47227/47254 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25646 event pairs, 249 based on Foata normal form. 317/4235 useless extension candidates. Maximal degree in co-relation 25267. Up to 964 conditions per place. [2023-01-28 04:40:47,507 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 190 selfloop transitions, 89 changer transitions 153/436 dead transitions. [2023-01-28 04:40:47,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 436 transitions, 5975 flow [2023-01-28 04:40:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 04:40:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 04:40:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2300 transitions. [2023-01-28 04:40:47,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382950382950383 [2023-01-28 04:40:47,511 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2300 transitions. [2023-01-28 04:40:47,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2300 transitions. [2023-01-28 04:40:47,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:47,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2300 transitions. [2023-01-28 04:40:47,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 104.54545454545455) internal successors, (2300), 22 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states 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 04:40:47,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states 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 04:40:47,516 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states 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 04:40:47,517 INFO L175 Difference]: Start difference. First operand has 200 places, 298 transitions, 3944 flow. Second operand 22 states and 2300 transitions. [2023-01-28 04:40:47,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 436 transitions, 5975 flow [2023-01-28 04:40:47,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 436 transitions, 5627 flow, removed 79 selfloop flow, removed 14 redundant places. [2023-01-28 04:40:47,629 INFO L231 Difference]: Finished difference. Result has 207 places, 196 transitions, 2500 flow [2023-01-28 04:40:47,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2500, PETRI_PLACES=207, PETRI_TRANSITIONS=196} [2023-01-28 04:40:47,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2023-01-28 04:40:47,630 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 196 transitions, 2500 flow [2023-01-28 04:40:47,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 100.47058823529412) internal successors, (1708), 17 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 04:40:47,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:47,630 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 04:40:47,634 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 04:40:47,830 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,SelfDestructingSolverStorable13 [2023-01-28 04:40:47,831 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:47,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:47,831 INFO L85 PathProgramCache]: Analyzing trace with hash 858875532, now seen corresponding path program 11 times [2023-01-28 04:40:47,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:47,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132689442] [2023-01-28 04:40:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:47,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:47,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132689442] [2023-01-28 04:40:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132689442] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:47,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308482925] [2023-01-28 04:40:47,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:40:47,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:47,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:47,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 04:40:48,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:48,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:40:48,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:48,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308482925] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:48,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-01-28 04:40:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263017583] [2023-01-28 04:40:48,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:48,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:40:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:40:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:40:48,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-01-28 04:40:48,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 196 transitions, 2500 flow. Second operand has 15 states, 15 states have (on average 106.33333333333333) internal successors, (1595), 15 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states 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 04:40:48,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:48,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-01-28 04:40:48,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:48,334 INFO L130 PetriNetUnfolder]: 839/1263 cut-off events. [2023-01-28 04:40:48,335 INFO L131 PetriNetUnfolder]: For 14706/14799 co-relation queries the response was YES. [2023-01-28 04:40:48,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9285 conditions, 1263 events. 839/1263 cut-off events. For 14706/14799 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5310 event pairs, 130 based on Foata normal form. 135/1366 useless extension candidates. Maximal degree in co-relation 9217. Up to 678 conditions per place. [2023-01-28 04:40:48,343 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 111 selfloop transitions, 65 changer transitions 0/186 dead transitions. [2023-01-28 04:40:48,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 186 transitions, 2664 flow [2023-01-28 04:40:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:40:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:40:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 773 transitions. [2023-01-28 04:40:48,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045002616431188 [2023-01-28 04:40:48,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 773 transitions. [2023-01-28 04:40:48,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 773 transitions. [2023-01-28 04:40:48,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:48,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 773 transitions. [2023-01-28 04:40:48,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 04:40:48,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 04:40:48,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 04:40:48,347 INFO L175 Difference]: Start difference. First operand has 207 places, 196 transitions, 2500 flow. Second operand 7 states and 773 transitions. [2023-01-28 04:40:48,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 186 transitions, 2664 flow [2023-01-28 04:40:48,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 186 transitions, 2089 flow, removed 168 selfloop flow, removed 34 redundant places. [2023-01-28 04:40:48,371 INFO L231 Difference]: Finished difference. Result has 115 places, 162 transitions, 1699 flow [2023-01-28 04:40:48,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1699, PETRI_PLACES=115, PETRI_TRANSITIONS=162} [2023-01-28 04:40:48,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2023-01-28 04:40:48,373 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 162 transitions, 1699 flow [2023-01-28 04:40:48,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 106.33333333333333) internal successors, (1595), 15 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states 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 04:40:48,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:48,373 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 04:40:48,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:48,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 04:40:48,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:48,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:48,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1834037619, now seen corresponding path program 12 times [2023-01-28 04:40:48,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:48,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375142587] [2023-01-28 04:40:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:48,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375142587] [2023-01-28 04:40:48,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375142587] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562763803] [2023-01-28 04:40:48,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:40:48,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:48,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:48,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 04:40:48,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:40:48,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:48,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:40:48,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:48,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562763803] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:48,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:48,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-28 04:40:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816552778] [2023-01-28 04:40:48,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:40:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:40:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:40:48,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:48,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 162 transitions, 1699 flow. Second operand has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:48,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:48,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:48,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:49,551 INFO L130 PetriNetUnfolder]: 1410/2155 cut-off events. [2023-01-28 04:40:49,551 INFO L131 PetriNetUnfolder]: For 11222/11234 co-relation queries the response was YES. [2023-01-28 04:40:49,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11835 conditions, 2155 events. 1410/2155 cut-off events. For 11222/11234 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9665 event pairs, 245 based on Foata normal form. 29/2170 useless extension candidates. Maximal degree in co-relation 11795. Up to 1108 conditions per place. [2023-01-28 04:40:49,563 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 242 selfloop transitions, 108 changer transitions 0/360 dead transitions. [2023-01-28 04:40:49,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 360 transitions, 4084 flow [2023-01-28 04:40:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 04:40:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 04:40:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1576 transitions. [2023-01-28 04:40:49,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3848595848595849 [2023-01-28 04:40:49,565 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1576 transitions. [2023-01-28 04:40:49,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1576 transitions. [2023-01-28 04:40:49,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:49,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1576 transitions. [2023-01-28 04:40:49,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.06666666666666) internal successors, (1576), 15 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 04:40:49,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states 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 04:40:49,571 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states 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 04:40:49,572 INFO L175 Difference]: Start difference. First operand has 115 places, 162 transitions, 1699 flow. Second operand 15 states and 1576 transitions. [2023-01-28 04:40:49,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 360 transitions, 4084 flow [2023-01-28 04:40:49,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 360 transitions, 3854 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-01-28 04:40:49,597 INFO L231 Difference]: Finished difference. Result has 129 places, 234 transitions, 2626 flow [2023-01-28 04:40:49,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2626, PETRI_PLACES=129, PETRI_TRANSITIONS=234} [2023-01-28 04:40:49,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2023-01-28 04:40:49,598 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 234 transitions, 2626 flow [2023-01-28 04:40:49,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:49,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:49,598 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 04:40:49,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:49,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:49,803 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:49,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:49,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1735626719, now seen corresponding path program 13 times [2023-01-28 04:40:49,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051853773] [2023-01-28 04:40:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:49,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:49,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051853773] [2023-01-28 04:40:49,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051853773] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581254401] [2023-01-28 04:40:49,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:40:49,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:49,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:49,911 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:49,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 04:40:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:49,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:40:49,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:50,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581254401] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:50,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:50,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 04:40:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025556895] [2023-01-28 04:40:50,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:50,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:40:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:40:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:40:50,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:50,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 234 transitions, 2626 flow. Second operand has 18 states, 18 states have (on average 99.11111111111111) internal successors, (1784), 18 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 04:40:50,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:50,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:50,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:50,550 INFO L130 PetriNetUnfolder]: 1735/2659 cut-off events. [2023-01-28 04:40:50,550 INFO L131 PetriNetUnfolder]: For 19320/19324 co-relation queries the response was YES. [2023-01-28 04:40:50,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16244 conditions, 2659 events. 1735/2659 cut-off events. For 19320/19324 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12503 event pairs, 318 based on Foata normal form. 32/2688 useless extension candidates. Maximal degree in co-relation 16198. Up to 1226 conditions per place. [2023-01-28 04:40:50,566 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 253 selfloop transitions, 79 changer transitions 0/341 dead transitions. [2023-01-28 04:40:50,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 341 transitions, 4241 flow [2023-01-28 04:40:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:40:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:40:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 941 transitions. [2023-01-28 04:40:50,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382987382987383 [2023-01-28 04:40:50,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 941 transitions. [2023-01-28 04:40:50,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 941 transitions. [2023-01-28 04:40:50,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:50,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 941 transitions. [2023-01-28 04:40:50,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.55555555555556) internal successors, (941), 9 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 04:40:50,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 04:40:50,571 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 04:40:50,571 INFO L175 Difference]: Start difference. First operand has 129 places, 234 transitions, 2626 flow. Second operand 9 states and 941 transitions. [2023-01-28 04:40:50,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 341 transitions, 4241 flow [2023-01-28 04:40:50,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 341 transitions, 4026 flow, removed 74 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:50,618 INFO L231 Difference]: Finished difference. Result has 137 places, 242 transitions, 2872 flow [2023-01-28 04:40:50,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2872, PETRI_PLACES=137, PETRI_TRANSITIONS=242} [2023-01-28 04:40:50,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2023-01-28 04:40:50,618 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 242 transitions, 2872 flow [2023-01-28 04:40:50,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 99.11111111111111) internal successors, (1784), 18 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 04:40:50,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:50,619 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 04:40:50,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 04:40:50,824 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:50,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -408139775, now seen corresponding path program 14 times [2023-01-28 04:40:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093293871] [2023-01-28 04:40:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:50,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:50,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093293871] [2023-01-28 04:40:50,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093293871] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600809556] [2023-01-28 04:40:50,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:40:50,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:50,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:50,938 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:50,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 04:40:51,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:51,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:51,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:40:51,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:51,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600809556] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:51,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-28 04:40:51,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933960886] [2023-01-28 04:40:51,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:51,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:40:51,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:51,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:40:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:40:51,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:51,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 242 transitions, 2872 flow. Second operand has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:51,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:51,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:52,062 INFO L130 PetriNetUnfolder]: 2498/3791 cut-off events. [2023-01-28 04:40:52,063 INFO L131 PetriNetUnfolder]: For 32432/32444 co-relation queries the response was YES. [2023-01-28 04:40:52,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24540 conditions, 3791 events. 2498/3791 cut-off events. For 32432/32444 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18722 event pairs, 326 based on Foata normal form. 32/3814 useless extension candidates. Maximal degree in co-relation 24490. Up to 1487 conditions per place. [2023-01-28 04:40:52,088 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 282 selfloop transitions, 179 changer transitions 0/470 dead transitions. [2023-01-28 04:40:52,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 470 transitions, 5879 flow [2023-01-28 04:40:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:40:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:40:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1902 transitions. [2023-01-28 04:40:52,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38705738705738707 [2023-01-28 04:40:52,090 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1902 transitions. [2023-01-28 04:40:52,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1902 transitions. [2023-01-28 04:40:52,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:52,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1902 transitions. [2023-01-28 04:40:52,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 105.66666666666667) internal successors, (1902), 18 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states 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 04:40:52,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 04:40:52,094 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 04:40:52,094 INFO L175 Difference]: Start difference. First operand has 137 places, 242 transitions, 2872 flow. Second operand 18 states and 1902 transitions. [2023-01-28 04:40:52,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 470 transitions, 5879 flow [2023-01-28 04:40:52,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 470 transitions, 5664 flow, removed 72 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:52,166 INFO L231 Difference]: Finished difference. Result has 155 places, 296 transitions, 3960 flow [2023-01-28 04:40:52,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3960, PETRI_PLACES=155, PETRI_TRANSITIONS=296} [2023-01-28 04:40:52,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2023-01-28 04:40:52,167 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 296 transitions, 3960 flow [2023-01-28 04:40:52,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:52,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:52,167 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 04:40:52,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:52,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 04:40:52,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:52,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1644877099, now seen corresponding path program 15 times [2023-01-28 04:40:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:52,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552322253] [2023-01-28 04:40:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:40:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552322253] [2023-01-28 04:40:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552322253] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639491166] [2023-01-28 04:40:52,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:40:52,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:52,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:52,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 04:40:52,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:40:52,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:52,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:40:52,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:52,657 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 04:40:52,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:40:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639491166] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:52,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:52,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 04:40:52,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451983062] [2023-01-28 04:40:52,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:52,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:40:52,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:40:52,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:40:52,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:52,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 296 transitions, 3960 flow. Second operand has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:52,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:52,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:53,441 INFO L130 PetriNetUnfolder]: 2548/3878 cut-off events. [2023-01-28 04:40:53,441 INFO L131 PetriNetUnfolder]: For 38879/38905 co-relation queries the response was YES. [2023-01-28 04:40:53,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26825 conditions, 3878 events. 2548/3878 cut-off events. For 38879/38905 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19365 event pairs, 520 based on Foata normal form. 44/3919 useless extension candidates. Maximal degree in co-relation 26770. Up to 1964 conditions per place. [2023-01-28 04:40:53,466 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 281 selfloop transitions, 126 changer transitions 0/416 dead transitions. [2023-01-28 04:40:53,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 416 transitions, 5984 flow [2023-01-28 04:40:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:40:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:40:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1053 transitions. [2023-01-28 04:40:53,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2023-01-28 04:40:53,467 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1053 transitions. [2023-01-28 04:40:53,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1053 transitions. [2023-01-28 04:40:53,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:53,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1053 transitions. [2023-01-28 04:40:53,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.3) internal successors, (1053), 10 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states 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 04:40:53,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states 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 04:40:53,470 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states 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 04:40:53,470 INFO L175 Difference]: Start difference. First operand has 155 places, 296 transitions, 3960 flow. Second operand 10 states and 1053 transitions. [2023-01-28 04:40:53,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 416 transitions, 5984 flow [2023-01-28 04:40:53,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 416 transitions, 5683 flow, removed 100 selfloop flow, removed 8 redundant places. [2023-01-28 04:40:53,565 INFO L231 Difference]: Finished difference. Result has 160 places, 326 transitions, 4533 flow [2023-01-28 04:40:53,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4533, PETRI_PLACES=160, PETRI_TRANSITIONS=326} [2023-01-28 04:40:53,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2023-01-28 04:40:53,566 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 326 transitions, 4533 flow [2023-01-28 04:40:53,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:53,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:53,566 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 04:40:53,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:53,771 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:53,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -975380431, now seen corresponding path program 16 times [2023-01-28 04:40:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459229733] [2023-01-28 04:40:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:40:53,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:53,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459229733] [2023-01-28 04:40:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459229733] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050163675] [2023-01-28 04:40:53,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:40:53,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:53,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:53,881 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:53,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 04:40:53,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:40:53,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:53,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:40:53,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:54,034 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 04:40:54,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:54,107 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 04:40:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050163675] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:54,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-01-28 04:40:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001994894] [2023-01-28 04:40:54,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:40:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:40:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:40:54,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 273 [2023-01-28 04:40:54,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 326 transitions, 4533 flow. Second operand has 19 states, 19 states have (on average 96.36842105263158) internal successors, (1831), 19 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states 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 04:40:54,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:54,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 273 [2023-01-28 04:40:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:55,365 INFO L130 PetriNetUnfolder]: 2642/4011 cut-off events. [2023-01-28 04:40:55,365 INFO L131 PetriNetUnfolder]: For 40575/40575 co-relation queries the response was YES. [2023-01-28 04:40:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27928 conditions, 4011 events. 2642/4011 cut-off events. For 40575/40575 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19866 event pairs, 321 based on Foata normal form. 26/4037 useless extension candidates. Maximal degree in co-relation 27869. Up to 1584 conditions per place. [2023-01-28 04:40:55,393 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 353 selfloop transitions, 244 changer transitions 0/597 dead transitions. [2023-01-28 04:40:55,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 597 transitions, 8564 flow [2023-01-28 04:40:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-28 04:40:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-28 04:40:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3119 transitions. [2023-01-28 04:40:55,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36854543306156207 [2023-01-28 04:40:55,403 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3119 transitions. [2023-01-28 04:40:55,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3119 transitions. [2023-01-28 04:40:55,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:55,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3119 transitions. [2023-01-28 04:40:55,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 100.61290322580645) internal successors, (3119), 31 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states 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 04:40:55,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 273.0) internal successors, (8736), 32 states have internal predecessors, (8736), 0 states have call successors, (0), 0 states 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 04:40:55,410 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 273.0) internal successors, (8736), 32 states have internal predecessors, (8736), 0 states have call successors, (0), 0 states 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 04:40:55,410 INFO L175 Difference]: Start difference. First operand has 160 places, 326 transitions, 4533 flow. Second operand 31 states and 3119 transitions. [2023-01-28 04:40:55,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 597 transitions, 8564 flow [2023-01-28 04:40:55,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 597 transitions, 8395 flow, removed 77 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:55,521 INFO L231 Difference]: Finished difference. Result has 191 places, 408 transitions, 6026 flow [2023-01-28 04:40:55,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=6026, PETRI_PLACES=191, PETRI_TRANSITIONS=408} [2023-01-28 04:40:55,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2023-01-28 04:40:55,522 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 408 transitions, 6026 flow [2023-01-28 04:40:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 96.36842105263158) internal successors, (1831), 19 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states 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 04:40:55,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:55,522 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 04:40:55,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:55,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:55,727 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:55,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash 561744499, now seen corresponding path program 17 times [2023-01-28 04:40:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:55,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158237680] [2023-01-28 04:40:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:40:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158237680] [2023-01-28 04:40:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158237680] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701215958] [2023-01-28 04:40:55,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:40:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:55,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:55,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 04:40:55,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:55,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:55,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:40:55,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:55,970 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 04:40:55,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:56,027 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 04:40:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701215958] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:56,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-01-28 04:40:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046027847] [2023-01-28 04:40:56,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:56,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:40:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:40:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:40:56,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 273 [2023-01-28 04:40:56,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 408 transitions, 6026 flow. Second operand has 17 states, 17 states have (on average 96.70588235294117) internal successors, (1644), 17 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 04:40:56,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:56,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 273 [2023-01-28 04:40:56,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:56,953 INFO L130 PetriNetUnfolder]: 2608/3945 cut-off events. [2023-01-28 04:40:56,953 INFO L131 PetriNetUnfolder]: For 43084/43084 co-relation queries the response was YES. [2023-01-28 04:40:56,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28677 conditions, 3945 events. 2608/3945 cut-off events. For 43084/43084 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19312 event pairs, 345 based on Foata normal form. 26/3971 useless extension candidates. Maximal degree in co-relation 28614. Up to 1634 conditions per place. [2023-01-28 04:40:56,982 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 354 selfloop transitions, 203 changer transitions 0/557 dead transitions. [2023-01-28 04:40:56,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 557 transitions, 8646 flow [2023-01-28 04:40:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:40:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:40:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1920 transitions. [2023-01-28 04:40:56,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37015615962984383 [2023-01-28 04:40:56,986 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1920 transitions. [2023-01-28 04:40:56,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1920 transitions. [2023-01-28 04:40:56,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:56,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1920 transitions. [2023-01-28 04:40:56,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.05263157894737) internal successors, (1920), 19 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states 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 04:40:56,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states 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 04:40:56,990 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states 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 04:40:56,990 INFO L175 Difference]: Start difference. First operand has 191 places, 408 transitions, 6026 flow. Second operand 19 states and 1920 transitions. [2023-01-28 04:40:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 557 transitions, 8646 flow [2023-01-28 04:40:57,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 557 transitions, 8182 flow, removed 110 selfloop flow, removed 8 redundant places. [2023-01-28 04:40:57,131 INFO L231 Difference]: Finished difference. Result has 204 places, 413 transitions, 6026 flow [2023-01-28 04:40:57,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6026, PETRI_PLACES=204, PETRI_TRANSITIONS=413} [2023-01-28 04:40:57,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2023-01-28 04:40:57,132 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 413 transitions, 6026 flow [2023-01-28 04:40:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 96.70588235294117) internal successors, (1644), 17 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 04:40:57,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:57,132 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 04:40:57,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:57,333 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:57,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1034602387, now seen corresponding path program 18 times [2023-01-28 04:40:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638066558] [2023-01-28 04:40:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:57,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:57,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638066558] [2023-01-28 04:40:57,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638066558] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:57,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245722466] [2023-01-28 04:40:57,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:40:57,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:57,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:57,437 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:57,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 04:40:57,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:40:57,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:57,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:40:57,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:57,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:57,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245722466] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:57,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:57,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 04:40:57,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835072077] [2023-01-28 04:40:57,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:57,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:40:57,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:40:57,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:40:57,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:57,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 413 transitions, 6026 flow. Second operand has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:57,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:57,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:57,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:58,529 INFO L130 PetriNetUnfolder]: 2549/3864 cut-off events. [2023-01-28 04:40:58,529 INFO L131 PetriNetUnfolder]: For 42182/42195 co-relation queries the response was YES. [2023-01-28 04:40:58,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28278 conditions, 3864 events. 2549/3864 cut-off events. For 42182/42195 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 19122 event pairs, 342 based on Foata normal form. 52/3907 useless extension candidates. Maximal degree in co-relation 28212. Up to 1565 conditions per place. [2023-01-28 04:40:58,557 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 294 selfloop transitions, 229 changer transitions 0/547 dead transitions. [2023-01-28 04:40:58,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 547 transitions, 8188 flow [2023-01-28 04:40:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 04:40:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 04:40:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1592 transitions. [2023-01-28 04:40:58,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887667887667888 [2023-01-28 04:40:58,559 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1592 transitions. [2023-01-28 04:40:58,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1592 transitions. [2023-01-28 04:40:58,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:58,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1592 transitions. [2023-01-28 04:40:58,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.13333333333334) internal successors, (1592), 15 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 04:40:58,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states 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 04:40:58,563 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states 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 04:40:58,563 INFO L175 Difference]: Start difference. First operand has 204 places, 413 transitions, 6026 flow. Second operand 15 states and 1592 transitions. [2023-01-28 04:40:58,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 547 transitions, 8188 flow [2023-01-28 04:40:58,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 547 transitions, 7947 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-01-28 04:40:58,725 INFO L231 Difference]: Finished difference. Result has 206 places, 420 transitions, 6404 flow [2023-01-28 04:40:58,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6404, PETRI_PLACES=206, PETRI_TRANSITIONS=420} [2023-01-28 04:40:58,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-28 04:40:58,726 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 420 transitions, 6404 flow [2023-01-28 04:40:58,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.14285714285714) internal successors, (2082), 21 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states 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 04:40:58,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:58,727 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 04:40:58,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:58,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 04:40:58,929 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:58,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash 849317859, now seen corresponding path program 19 times [2023-01-28 04:40:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:58,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074142152] [2023-01-28 04:40:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:40:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074142152] [2023-01-28 04:40:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074142152] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607136920] [2023-01-28 04:40:59,018 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:40:59,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:59,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:59,019 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:59,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 04:40:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:40:59,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:59,186 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 04:40:59,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:40:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607136920] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:59,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:59,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 04:40:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692684095] [2023-01-28 04:40:59,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:40:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:40:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:40:59,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:40:59,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 420 transitions, 6404 flow. Second operand has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 04:40:59,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:59,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:40:59,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:59,969 INFO L130 PetriNetUnfolder]: 2519/3804 cut-off events. [2023-01-28 04:40:59,969 INFO L131 PetriNetUnfolder]: For 45361/45372 co-relation queries the response was YES. [2023-01-28 04:40:59,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28647 conditions, 3804 events. 2519/3804 cut-off events. For 45361/45372 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18595 event pairs, 406 based on Foata normal form. 26/3821 useless extension candidates. Maximal degree in co-relation 28580. Up to 1553 conditions per place. [2023-01-28 04:40:59,995 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 267 selfloop transitions, 182 changer transitions 0/473 dead transitions. [2023-01-28 04:40:59,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 473 transitions, 7759 flow [2023-01-28 04:40:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:40:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:40:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 940 transitions. [2023-01-28 04:40:59,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38258038258038257 [2023-01-28 04:40:59,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 940 transitions. [2023-01-28 04:40:59,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 940 transitions. [2023-01-28 04:40:59,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:59,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 940 transitions. [2023-01-28 04:40:59,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.44444444444444) internal successors, (940), 9 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 04:40:59,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 04:40:59,999 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 04:40:59,999 INFO L175 Difference]: Start difference. First operand has 206 places, 420 transitions, 6404 flow. Second operand 9 states and 940 transitions. [2023-01-28 04:40:59,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 473 transitions, 7759 flow [2023-01-28 04:41:00,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 473 transitions, 7262 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-01-28 04:41:00,114 INFO L231 Difference]: Finished difference. Result has 201 places, 422 transitions, 6478 flow [2023-01-28 04:41:00,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6478, PETRI_PLACES=201, PETRI_TRANSITIONS=422} [2023-01-28 04:41:00,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2023-01-28 04:41:00,115 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 422 transitions, 6478 flow [2023-01-28 04:41:00,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 04:41:00,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:00,115 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 04:41:00,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-28 04:41:00,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 04:41:00,316 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:00,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash 103220131, now seen corresponding path program 20 times [2023-01-28 04:41:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331511314] [2023-01-28 04:41:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331511314] [2023-01-28 04:41:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331511314] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933071683] [2023-01-28 04:41:00,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:41:00,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:00,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:00,424 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:00,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 04:41:00,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:41:00,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:00,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:00,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:00,616 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 04:41:00,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933071683] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:00,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:00,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 04:41:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34243177] [2023-01-28 04:41:00,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:41:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:00,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:41:00,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:41:00,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:41:00,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 422 transitions, 6478 flow. Second operand has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 04:41:00,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:00,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:41:00,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:01,425 INFO L130 PetriNetUnfolder]: 2488/3741 cut-off events. [2023-01-28 04:41:01,426 INFO L131 PetriNetUnfolder]: For 47088/47095 co-relation queries the response was YES. [2023-01-28 04:41:01,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28605 conditions, 3741 events. 2488/3741 cut-off events. For 47088/47095 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 18057 event pairs, 729 based on Foata normal form. 30/3762 useless extension candidates. Maximal degree in co-relation 28538. Up to 2986 conditions per place. [2023-01-28 04:41:01,451 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 342 selfloop transitions, 96 changer transitions 0/462 dead transitions. [2023-01-28 04:41:01,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 462 transitions, 7628 flow [2023-01-28 04:41:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:41:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:41:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 934 transitions. [2023-01-28 04:41:01,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38013838013838014 [2023-01-28 04:41:01,453 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 934 transitions. [2023-01-28 04:41:01,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 934 transitions. [2023-01-28 04:41:01,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:01,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 934 transitions. [2023-01-28 04:41:01,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.77777777777777) internal successors, (934), 9 states have internal predecessors, (934), 0 states have call successors, (0), 0 states 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 04:41:01,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 04:41:01,459 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states 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 04:41:01,459 INFO L175 Difference]: Start difference. First operand has 201 places, 422 transitions, 6478 flow. Second operand 9 states and 934 transitions. [2023-01-28 04:41:01,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 462 transitions, 7628 flow [2023-01-28 04:41:01,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 462 transitions, 7404 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-01-28 04:41:01,590 INFO L231 Difference]: Finished difference. Result has 202 places, 422 transitions, 6444 flow [2023-01-28 04:41:01,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6149, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6444, PETRI_PLACES=202, PETRI_TRANSITIONS=422} [2023-01-28 04:41:01,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-01-28 04:41:01,590 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 422 transitions, 6444 flow [2023-01-28 04:41:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 04:41:01,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:01,591 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, 1] [2023-01-28 04:41:01,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-01-28 04:41:01,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:01,791 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:01,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 108858239, now seen corresponding path program 2 times [2023-01-28 04:41:01,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:01,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588438042] [2023-01-28 04:41:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:01,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:41:02,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:02,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588438042] [2023-01-28 04:41:02,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588438042] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:02,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430939866] [2023-01-28 04:41:02,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:41:02,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:02,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:02,851 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:02,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 04:41:02,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:41:02,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:02,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 50 conjunts are in the unsatisfiable core [2023-01-28 04:41:02,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:03,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:41:03,212 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 34 treesize of output 32 [2023-01-28 04:41:03,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:41:03,290 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 34 treesize of output 32 [2023-01-28 04:41:03,830 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:41:03,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:41:03,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:41:03,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 76 [2023-01-28 04:41:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:41:03,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:04,521 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~M~0 0) (let ((.cse5 (+ c_~A~0.offset (* 4 c_~M~0))) (.cse4 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork1_~i~0 4)))) (and (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse0 (select .cse3 .cse5)) (.cse2 (select .cse3 .cse4)) (.cse1 (select .cse3 c_~A~0.offset))) (or (<= .cse0 .cse1) (= .cse2 .cse0) (<= .cse2 c_~max1~0) (<= .cse1 c_~max2~0))))) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse7 (select .cse8 .cse5)) (.cse6 (select .cse8 .cse4))) (or (= .cse6 .cse7) (<= .cse7 c_~max2~0) (< c_~max2~0 (select .cse8 c_~A~0.offset)) (<= .cse6 c_~max1~0))))) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse9 (select .cse10 c_~A~0.offset))) (or (= c_~max1~0 .cse9) (< .cse9 (select .cse10 .cse5)) (< c_~max1~0 (select .cse10 .cse4)) (<= .cse9 c_~max2~0))))) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse13 (select .cse12 .cse4)) (.cse11 (select .cse12 c_~A~0.offset))) (or (< .cse11 (select .cse12 .cse5)) (= .cse13 .cse11) (<= .cse13 c_~max1~0) (<= .cse11 c_~max2~0))))) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse15 (select .cse14 .cse4))) (or (< c_~max2~0 (select .cse14 .cse5)) (< c_~max2~0 (select .cse14 c_~A~0.offset)) (= .cse15 c_~max2~0) (<= .cse15 c_~max1~0))))) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse16 (select .cse17 .cse5))) (or (<= .cse16 c_~max2~0) (< c_~max2~0 (select .cse17 c_~A~0.offset)) (< c_~max1~0 (select .cse17 .cse4)) (= c_~max1~0 .cse16))))) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse20 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse19 (select .cse20 c_~A~0.offset)) (.cse18 (select .cse20 .cse5))) (or (<= .cse18 .cse19) (< c_~max1~0 (select .cse20 .cse4)) (<= .cse19 c_~max2~0) (= c_~max1~0 .cse18))))) (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_1101 (Array Int Int))) (let ((.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (or (< c_~max2~0 (select .cse21 .cse5)) (< c_~max2~0 (select .cse21 c_~A~0.offset)) (< c_~max1~0 (select .cse21 .cse4))))))))) is different from false [2023-01-28 04:41:04,721 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~M~0 0) (let ((.cse4 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork1_~i~0 4))) (.cse5 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse1 (select .cse3 c_~A~0.offset)) (.cse0 (select .cse3 .cse5)) (.cse2 (select .cse3 .cse4))) (or (<= .cse0 .cse1) (<= .cse1 c_~max2~0) (= .cse0 .cse2) (<= .cse2 c_~max1~0))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse7 (select .cse8 c_~A~0.offset)) (.cse6 (select .cse8 .cse5))) (or (<= .cse6 .cse7) (<= .cse7 c_~max2~0) (= c_~max1~0 .cse6) (< c_~max1~0 (select .cse8 .cse4)))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse9 (select .cse11 c_~A~0.offset)) (.cse10 (select .cse11 .cse4))) (or (= .cse9 .cse10) (<= .cse9 c_~max2~0) (< .cse9 (select .cse11 .cse5)) (<= .cse10 c_~max1~0))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse13 (select .cse12 .cse4))) (or (< c_~max2~0 (select .cse12 c_~A~0.offset)) (< c_~max2~0 (select .cse12 .cse5)) (<= .cse13 c_~max1~0) (= c_~max2~0 .cse13))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse15 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse14 (select .cse15 c_~A~0.offset))) (or (<= .cse14 c_~max2~0) (= c_~max1~0 .cse14) (< .cse14 (select .cse15 .cse5)) (< c_~max1~0 (select .cse15 .cse4)))))) (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (or (< c_~max2~0 (select .cse16 c_~A~0.offset)) (< c_~max2~0 (select .cse16 .cse5)) (< c_~max1~0 (select .cse16 .cse4)))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse17 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse19 (select .cse17 .cse4)) (.cse18 (select .cse17 .cse5))) (or (< c_~max2~0 (select .cse17 c_~A~0.offset)) (= .cse18 .cse19) (<= .cse19 c_~max1~0) (<= .cse18 c_~max2~0))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int))) (let ((.cse21 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1100) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1101) c_~A~0.base))) (let ((.cse20 (select .cse21 .cse5))) (or (= c_~max1~0 .cse20) (< c_~max2~0 (select .cse21 c_~A~0.offset)) (<= .cse20 c_~max2~0) (< c_~max1~0 (select .cse21 .cse4))))))))) is different from false [2023-01-28 04:41:04,843 INFO L321 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-01-28 04:41:04,844 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 3307 treesize of output 2934 [2023-01-28 04:41:04,963 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:04,963 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 1835 treesize of output 1826 [2023-01-28 04:41:05,028 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,028 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 1805 treesize of output 1766 [2023-01-28 04:41:05,093 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,094 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 1745 treesize of output 1714 [2023-01-28 04:41:05,155 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,156 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 1693 treesize of output 1688 [2023-01-28 04:41:05,227 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,228 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 1667 treesize of output 1665 [2023-01-28 04:41:05,298 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,299 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 1644 treesize of output 1619 [2023-01-28 04:41:05,372 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,372 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 1598 treesize of output 1604 [2023-01-28 04:41:05,444 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,444 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 1583 treesize of output 1574 [2023-01-28 04:41:05,482 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 04:41:05,527 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,528 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 1553 treesize of output 1518 [2023-01-28 04:41:05,614 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,615 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 1497 treesize of output 1490 [2023-01-28 04:41:05,695 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,695 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 1469 treesize of output 1471 [2023-01-28 04:41:05,780 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,780 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 1450 treesize of output 1433 [2023-01-28 04:41:05,877 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,878 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 1412 treesize of output 1391 [2023-01-28 04:41:05,975 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:05,976 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 1370 treesize of output 1370 [2023-01-28 04:41:06,074 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:06,075 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 1349 treesize of output 1326 [2023-01-28 04:41:06,179 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-01-28 04:41:06,179 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 1305 treesize of output 1304 [2023-01-28 04:44:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430939866] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:00,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 37 [2023-01-28 04:44:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455288286] [2023-01-28 04:44:00,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-01-28 04:44:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-01-28 04:44:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1207, Unknown=2, NotChecked=142, Total=1482 [2023-01-28 04:44:00,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 273 [2023-01-28 04:44:00,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 422 transitions, 6444 flow. Second operand has 39 states, 39 states have (on average 70.7948717948718) internal successors, (2761), 39 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states 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 04:44:00,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:00,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 273 [2023-01-28 04:44:00,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:16,442 INFO L130 PetriNetUnfolder]: 6074/9547 cut-off events. [2023-01-28 04:44:16,442 INFO L131 PetriNetUnfolder]: For 133966/133966 co-relation queries the response was YES. [2023-01-28 04:44:16,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72841 conditions, 9547 events. 6074/9547 cut-off events. For 133966/133966 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 59367 event pairs, 297 based on Foata normal form. 10/9557 useless extension candidates. Maximal degree in co-relation 72774. Up to 4884 conditions per place. [2023-01-28 04:44:16,522 INFO L137 encePairwiseOnDemand]: 256/273 looper letters, 767 selfloop transitions, 661 changer transitions 18/1446 dead transitions. [2023-01-28 04:44:16,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1446 transitions, 22528 flow [2023-01-28 04:44:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-01-28 04:44:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-01-28 04:44:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 5102 transitions. [2023-01-28 04:44:16,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2875176105945337 [2023-01-28 04:44:16,527 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 5102 transitions. [2023-01-28 04:44:16,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 5102 transitions. [2023-01-28 04:44:16,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:16,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 5102 transitions. [2023-01-28 04:44:16,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 78.49230769230769) internal successors, (5102), 65 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states 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 04:44:16,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 273.0) internal successors, (18018), 66 states have internal predecessors, (18018), 0 states have call successors, (0), 0 states 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 04:44:16,541 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 273.0) internal successors, (18018), 66 states have internal predecessors, (18018), 0 states have call successors, (0), 0 states 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 04:44:16,541 INFO L175 Difference]: Start difference. First operand has 202 places, 422 transitions, 6444 flow. Second operand 65 states and 5102 transitions. [2023-01-28 04:44:16,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1446 transitions, 22528 flow [2023-01-28 04:44:17,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1446 transitions, 21758 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-01-28 04:44:17,393 INFO L231 Difference]: Finished difference. Result has 286 places, 1008 transitions, 18203 flow [2023-01-28 04:44:17,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6267, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=18203, PETRI_PLACES=286, PETRI_TRANSITIONS=1008} [2023-01-28 04:44:17,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2023-01-28 04:44:17,394 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1008 transitions, 18203 flow [2023-01-28 04:44:17,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 70.7948717948718) internal successors, (2761), 39 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states 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 04:44:17,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:17,394 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, 1] [2023-01-28 04:44:17,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 04:44:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:17,595 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:44:17,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1055356433, now seen corresponding path program 3 times [2023-01-28 04:44:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498693007] [2023-01-28 04:44:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:18,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498693007] [2023-01-28 04:44:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498693007] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026418341] [2023-01-28 04:44:18,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:44:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:18,495 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:44:18,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 04:44:18,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:44:18,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:44:18,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 04:44:18,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:19,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:44:19,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:19,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 81 [2023-01-28 04:44:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:19,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:20,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:20,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 371 treesize of output 607 [2023-01-28 04:46:05,567 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:46:30,103 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:47:40,731 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:49:21,874 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:50:49,606 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:51:24,273 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:52:30,339 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-28 04:54:07,847 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 04:54:07,848 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:54:07,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-01-28 04:54:07,878 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 04:54:07,883 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:54:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 04:54:08,049 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 40ms.. [2023-01-28 04:54:08,050 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:54:08,051 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:54:08,051 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:54:08,051 INFO L445 BasicCegarLoop]: Path program histogram: [20, 3, 1, 1, 1] [2023-01-28 04:54:08,053 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:54:08,053 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:54:08,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:54:08 BasicIcfg [2023-01-28 04:54:08,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:54:08,055 INFO L158 Benchmark]: Toolchain (without parser) took 835740.65ms. Allocated memory was 375.4MB in the beginning and 1.4GB in the end (delta: 977.3MB). Free memory was 344.6MB in the beginning and 581.1MB in the end (delta: -236.5MB). Peak memory consumption was 969.4MB. Max. memory is 16.0GB. [2023-01-28 04:54:08,055 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:54:08,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.68ms. Allocated memory is still 375.4MB. Free memory was 344.5MB in the beginning and 332.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:54:08,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.31ms. Allocated memory is still 375.4MB. Free memory was 332.6MB in the beginning and 330.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:54:08,055 INFO L158 Benchmark]: Boogie Preprocessor took 27.79ms. Allocated memory is still 375.4MB. Free memory was 330.9MB in the beginning and 329.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:54:08,055 INFO L158 Benchmark]: RCFGBuilder took 442.59ms. Allocated memory is still 375.4MB. Free memory was 329.3MB in the beginning and 308.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 04:54:08,056 INFO L158 Benchmark]: TraceAbstraction took 835045.44ms. Allocated memory was 375.4MB in the beginning and 1.4GB in the end (delta: 977.3MB). Free memory was 307.9MB in the beginning and 581.1MB in the end (delta: -273.2MB). Peak memory consumption was 931.6MB. Max. memory is 16.0GB. [2023-01-28 04:54:08,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 191.68ms. Allocated memory is still 375.4MB. Free memory was 344.5MB in the beginning and 332.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.31ms. Allocated memory is still 375.4MB. Free memory was 332.6MB in the beginning and 330.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.79ms. Allocated memory is still 375.4MB. Free memory was 330.9MB in the beginning and 329.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 442.59ms. Allocated memory is still 375.4MB. Free memory was 329.3MB in the beginning and 308.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 835045.44ms. Allocated memory was 375.4MB in the beginning and 1.4GB in the end (delta: 977.3MB). Free memory was 307.9MB in the beginning and 581.1MB in the end (delta: -273.2MB). Peak memory consumption was 931.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 129 PlacesBefore, 30 PlacesAfterwards, 131 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 8 FixpointIterations, 73 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 129 TotalNumberOfCompositions, 1615 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1511, independent: 1489, independent conditional: 0, independent unconditional: 1489, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 724, independent: 714, independent conditional: 0, independent unconditional: 714, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1511, independent: 775, independent conditional: 0, independent unconditional: 775, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 724, unknown conditional: 0, unknown unconditional: 724] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 40ms.. - TimeoutResultAtElement [Line: 93]: 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 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 40ms.. - TimeoutResultAtElement [Line: 94]: 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 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 40ms.. - TimeoutResultAtElement [Line: 92]: 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 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 40ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 163 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 834.9s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4255 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4255 mSDsluCounter, 753 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1521 IncrementalHoareTripleChecker+Unchecked, 654 mSDsCounter, 181 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15517 IncrementalHoareTripleChecker+Invalid, 17219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 181 mSolverCounterUnsat, 99 mSDtfsCounter, 15517 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1562 GetRequests, 799 SyntacticMatches, 39 SemanticMatches, 724 ConstructedPredicates, 4 IntricatePredicates, 2 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18203occurred in iteration=25, InterpolantAutomatonStates: 404, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 191.2s InterpolantComputationTime, 1147 NumberOfCodeBlocks, 1136 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 1629 ConstructedInterpolants, 13 QuantifiedInterpolants, 18573 SizeOfPredicates, 257 NumberOfNonLiveVariables, 4916 ConjunctsInSsa, 437 ConjunctsInUnsatCore, 71 InterpolantComputations, 3 PerfectInterpolantSequences, 147/349 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