/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:55:01,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:55:01,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:55:01,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:55:01,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:55:01,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:55:01,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:55:01,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:55:01,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:55:01,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:55:01,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:55:01,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:55:01,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:55:01,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:55:01,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:55:01,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:55:01,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:55:01,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:55:01,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:55:02,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:55:02,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:55:02,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:55:02,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:55:02,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:55:02,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:55:02,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:55:02,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:55:02,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:55:02,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:55:02,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:55:02,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:55:02,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:55:02,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:55:02,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:55:02,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:55:02,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:55:02,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:55:02,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:55:02,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:55:02,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:55:02,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:55:02,028 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-NoLbe.epf [2022-12-11 19:55:02,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:55:02,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:55:02,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:55:02,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:55:02,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:55:02,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:55:02,070 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:55:02,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:55:02,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:55:02,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:55:02,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:55:02,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:55:02,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:55:02,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:55:02,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:55:02,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:55:02,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:55:02,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:55:02,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:55:02,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:55:02,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:55:02,073 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:55:02,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:55:02,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:55:02,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:55:02,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:55:02,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:55:02,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:55:02,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:55:02,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:55:02,443 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:55:02,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2022-12-11 19:55:03,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:55:03,944 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:55:03,945 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2022-12-11 19:55:03,952 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8601fb8/5cd0c48ea36a4207a1961014cfe6bfbd/FLAGb255e2a5f [2022-12-11 19:55:03,974 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8601fb8/5cd0c48ea36a4207a1961014cfe6bfbd [2022-12-11 19:55:03,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:55:03,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:55:03,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:55:03,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:55:03,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:55:03,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:55:03" (1/1) ... [2022-12-11 19:55:03,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e03dfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:03, skipping insertion in model container [2022-12-11 19:55:03,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:55:03" (1/1) ... [2022-12-11 19:55:03,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:55:04,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:55:04,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:55:04,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:55:04,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:55:04,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:55:04,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:55:04,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:55:04,184 WARN L237 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-min-array-hom.wvr.c[2586,2599] [2022-12-11 19:55:04,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:55:04,208 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:55:04,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:55:04,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:55:04,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:55:04,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:55:04,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:55:04,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:55:04,255 WARN L237 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-min-array-hom.wvr.c[2586,2599] [2022-12-11 19:55:04,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:55:04,273 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:55:04,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04 WrapperNode [2022-12-11 19:55:04,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:55:04,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:55:04,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:55:04,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:55:04,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,328 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-12-11 19:55:04,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:55:04,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:55:04,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:55:04,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:55:04,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,374 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:55:04,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:55:04,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:55:04,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:55:04,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (1/1) ... [2022-12-11 19:55:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:55:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:04,416 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) [2022-12-11 19:55:04,438 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 [2022-12-11 19:55:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:55:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:55:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:55:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:55:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:55:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:55:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:55:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:55:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:55:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:55:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:55:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:55:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:55:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:55:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:55:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:55:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:55:04,455 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:55:04,608 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:55:04,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:55:04,881 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:55:04,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:55:04,944 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 19:55:04,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:55:04 BoogieIcfgContainer [2022-12-11 19:55:04,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:55:04,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:55:04,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:55:04,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:55:04,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:55:03" (1/3) ... [2022-12-11 19:55:04,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17814f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:55:04, skipping insertion in model container [2022-12-11 19:55:04,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:55:04" (2/3) ... [2022-12-11 19:55:04,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17814f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:55:04, skipping insertion in model container [2022-12-11 19:55:04,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:55:04" (3/3) ... [2022-12-11 19:55:04,953 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-12-11 19:55:04,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:55:04,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:55:04,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:55:05,064 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 19:55:05,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 142 transitions, 308 flow [2022-12-11 19:55:05,188 INFO L130 PetriNetUnfolder]: 12/139 cut-off events. [2022-12-11 19:55:05,188 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:55:05,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 12/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 86 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2022-12-11 19:55:05,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 142 transitions, 308 flow [2022-12-11 19:55:05,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 129 transitions, 276 flow [2022-12-11 19:55:05,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:55:05,227 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;@4945276d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:55:05,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:55:05,277 INFO L130 PetriNetUnfolder]: 12/128 cut-off events. [2022-12-11 19:55:05,277 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:55:05,277 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:05,278 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:05,280 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)] === [2022-12-11 19:55:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash -286768882, now seen corresponding path program 1 times [2022-12-11 19:55:05,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:05,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280553542] [2022-12-11 19:55:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:05,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:06,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:06,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280553542] [2022-12-11 19:55:06,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280553542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:55:06,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:55:06,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:55:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763774583] [2022-12-11 19:55:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:06,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:55:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:55:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:55:06,241 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 142 [2022-12-11 19:55:06,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 129 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:06,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:06,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 142 [2022-12-11 19:55:06,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:06,558 INFO L130 PetriNetUnfolder]: 53/339 cut-off events. [2022-12-11 19:55:06,558 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-11 19:55:06,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 339 events. 53/339 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1186 event pairs, 9 based on Foata normal form. 60/369 useless extension candidates. Maximal degree in co-relation 182. Up to 49 conditions per place. [2022-12-11 19:55:06,563 INFO L137 encePairwiseOnDemand]: 121/142 looper letters, 47 selfloop transitions, 9 changer transitions 11/156 dead transitions. [2022-12-11 19:55:06,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 156 transitions, 500 flow [2022-12-11 19:55:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:55:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:55:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1199 transitions. [2022-12-11 19:55:06,579 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7676056338028169 [2022-12-11 19:55:06,581 INFO L175 Difference]: Start difference. First operand has 127 places, 129 transitions, 276 flow. Second operand 11 states and 1199 transitions. [2022-12-11 19:55:06,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 156 transitions, 500 flow [2022-12-11 19:55:06,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 156 transitions, 464 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:55:06,588 INFO L231 Difference]: Finished difference. Result has 135 places, 123 transitions, 293 flow [2022-12-11 19:55:06,590 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=293, PETRI_PLACES=135, PETRI_TRANSITIONS=123} [2022-12-11 19:55:06,593 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 8 predicate places. [2022-12-11 19:55:06,593 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 123 transitions, 293 flow [2022-12-11 19:55:06,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:06,594 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:06,594 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:06,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:55:06,594 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)] === [2022-12-11 19:55:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash 543478743, now seen corresponding path program 1 times [2022-12-11 19:55:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:06,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309635379] [2022-12-11 19:55:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309635379] [2022-12-11 19:55:06,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309635379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:55:06,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:55:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:55:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668593313] [2022-12-11 19:55:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:55:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:06,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:55:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:55:06,806 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 142 [2022-12-11 19:55:06,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 123 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:06,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:06,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 142 [2022-12-11 19:55:06,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:07,176 INFO L130 PetriNetUnfolder]: 378/1340 cut-off events. [2022-12-11 19:55:07,176 INFO L131 PetriNetUnfolder]: For 442/478 co-relation queries the response was YES. [2022-12-11 19:55:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 1340 events. 378/1340 cut-off events. For 442/478 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8980 event pairs, 184 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 2393. Up to 433 conditions per place. [2022-12-11 19:55:07,191 INFO L137 encePairwiseOnDemand]: 133/142 looper letters, 59 selfloop transitions, 8 changer transitions 0/153 dead transitions. [2022-12-11 19:55:07,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 527 flow [2022-12-11 19:55:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 19:55:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 19:55:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 872 transitions. [2022-12-11 19:55:07,194 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7676056338028169 [2022-12-11 19:55:07,194 INFO L175 Difference]: Start difference. First operand has 135 places, 123 transitions, 293 flow. Second operand 8 states and 872 transitions. [2022-12-11 19:55:07,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 527 flow [2022-12-11 19:55:07,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 153 transitions, 523 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:55:07,204 INFO L231 Difference]: Finished difference. Result has 133 places, 126 transitions, 325 flow [2022-12-11 19:55:07,205 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=133, PETRI_TRANSITIONS=126} [2022-12-11 19:55:07,206 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 6 predicate places. [2022-12-11 19:55:07,206 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 126 transitions, 325 flow [2022-12-11 19:55:07,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:07,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:07,207 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:55:07,207 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)] === [2022-12-11 19:55:07,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1886105029, now seen corresponding path program 1 times [2022-12-11 19:55:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:07,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974120288] [2022-12-11 19:55:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:07,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:07,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974120288] [2022-12-11 19:55:07,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974120288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:55:07,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:55:07,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 19:55:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997426581] [2022-12-11 19:55:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:55:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:55:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:55:07,558 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-12-11 19:55:07,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 126 transitions, 325 flow. Second operand has 10 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:07,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:07,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-12-11 19:55:07,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:08,061 INFO L130 PetriNetUnfolder]: 909/2039 cut-off events. [2022-12-11 19:55:08,062 INFO L131 PetriNetUnfolder]: For 512/536 co-relation queries the response was YES. [2022-12-11 19:55:08,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2039 events. 909/2039 cut-off events. For 512/536 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14187 event pairs, 628 based on Foata normal form. 24/1828 useless extension candidates. Maximal degree in co-relation 3449. Up to 1210 conditions per place. [2022-12-11 19:55:08,077 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 79 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2022-12-11 19:55:08,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 159 transitions, 593 flow [2022-12-11 19:55:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:55:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:55:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2022-12-11 19:55:08,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6165172855313701 [2022-12-11 19:55:08,082 INFO L175 Difference]: Start difference. First operand has 133 places, 126 transitions, 325 flow. Second operand 11 states and 963 transitions. [2022-12-11 19:55:08,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 159 transitions, 593 flow [2022-12-11 19:55:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 159 transitions, 583 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 19:55:08,090 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 364 flow [2022-12-11 19:55:08,091 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=364, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2022-12-11 19:55:08,092 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 17 predicate places. [2022-12-11 19:55:08,092 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 364 flow [2022-12-11 19:55:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:08,093 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:08,094 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:55:08,094 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)] === [2022-12-11 19:55:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1310695061, now seen corresponding path program 1 times [2022-12-11 19:55:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441276739] [2022-12-11 19:55:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:08,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441276739] [2022-12-11 19:55:08,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441276739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:55:08,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:55:08,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 19:55:08,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140241313] [2022-12-11 19:55:08,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:08,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:55:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:55:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:55:08,380 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 142 [2022-12-11 19:55:08,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:08,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:08,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 142 [2022-12-11 19:55:08,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:08,787 INFO L130 PetriNetUnfolder]: 753/1562 cut-off events. [2022-12-11 19:55:08,787 INFO L131 PetriNetUnfolder]: For 613/631 co-relation queries the response was YES. [2022-12-11 19:55:08,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3429 conditions, 1562 events. 753/1562 cut-off events. For 613/631 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9720 event pairs, 425 based on Foata normal form. 18/1460 useless extension candidates. Maximal degree in co-relation 3140. Up to 914 conditions per place. [2022-12-11 19:55:08,801 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 64 selfloop transitions, 7 changer transitions 21/161 dead transitions. [2022-12-11 19:55:08,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 161 transitions, 640 flow [2022-12-11 19:55:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 19:55:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 19:55:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1052 transitions. [2022-12-11 19:55:08,805 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6173708920187794 [2022-12-11 19:55:08,805 INFO L175 Difference]: Start difference. First operand has 144 places, 130 transitions, 364 flow. Second operand 12 states and 1052 transitions. [2022-12-11 19:55:08,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 161 transitions, 640 flow [2022-12-11 19:55:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 161 transitions, 627 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-11 19:55:08,813 INFO L231 Difference]: Finished difference. Result has 152 places, 124 transitions, 331 flow [2022-12-11 19:55:08,813 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=331, PETRI_PLACES=152, PETRI_TRANSITIONS=124} [2022-12-11 19:55:08,814 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 25 predicate places. [2022-12-11 19:55:08,815 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 124 transitions, 331 flow [2022-12-11 19:55:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:08,815 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:08,815 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:08,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:55:08,816 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)] === [2022-12-11 19:55:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2133287486, now seen corresponding path program 1 times [2022-12-11 19:55:08,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:08,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004105334] [2022-12-11 19:55:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:08,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:08,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:09,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004105334] [2022-12-11 19:55:09,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004105334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:09,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481252250] [2022-12-11 19:55:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:09,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:09,015 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) [2022-12-11 19:55:09,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:55:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:09,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 19:55:09,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:09,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:55:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:09,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481252250] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:09,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 19:55:09,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-12-11 19:55:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592464061] [2022-12-11 19:55:09,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:09,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 19:55:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 19:55:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-11 19:55:09,512 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 142 [2022-12-11 19:55:09,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 124 transitions, 331 flow. Second operand has 9 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:09,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:09,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 142 [2022-12-11 19:55:09,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:09,993 INFO L130 PetriNetUnfolder]: 1444/2561 cut-off events. [2022-12-11 19:55:09,994 INFO L131 PetriNetUnfolder]: For 1183/1183 co-relation queries the response was YES. [2022-12-11 19:55:10,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 2561 events. 1444/2561 cut-off events. For 1183/1183 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16832 event pairs, 335 based on Foata normal form. 10/2533 useless extension candidates. Maximal degree in co-relation 6083. Up to 683 conditions per place. [2022-12-11 19:55:10,021 INFO L137 encePairwiseOnDemand]: 131/142 looper letters, 101 selfloop transitions, 17 changer transitions 0/197 dead transitions. [2022-12-11 19:55:10,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 197 transitions, 832 flow [2022-12-11 19:55:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:55:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:55:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1140 transitions. [2022-12-11 19:55:10,024 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7298335467349552 [2022-12-11 19:55:10,024 INFO L175 Difference]: Start difference. First operand has 152 places, 124 transitions, 331 flow. Second operand 11 states and 1140 transitions. [2022-12-11 19:55:10,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 197 transitions, 832 flow [2022-12-11 19:55:10,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 197 transitions, 771 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-12-11 19:55:10,038 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 394 flow [2022-12-11 19:55:10,039 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=394, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2022-12-11 19:55:10,041 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 14 predicate places. [2022-12-11 19:55:10,041 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 394 flow [2022-12-11 19:55:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:10,042 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:10,042 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:10,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 19:55:10,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:10,251 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)] === [2022-12-11 19:55:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:10,251 INFO L85 PathProgramCache]: Analyzing trace with hash 649087654, now seen corresponding path program 2 times [2022-12-11 19:55:10,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:10,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115275528] [2022-12-11 19:55:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:10,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:10,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115275528] [2022-12-11 19:55:10,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115275528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841891784] [2022-12-11 19:55:10,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:55:10,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:10,417 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) [2022-12-11 19:55:10,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:55:10,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-11 19:55:10,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:55:10,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-11 19:55:10,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:55:10,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 19:55:10,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841891784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:55:10,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 19:55:10,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-12-11 19:55:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014828216] [2022-12-11 19:55:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:10,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:55:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:55:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:55:10,712 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 142 [2022-12-11 19:55:10,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:10,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:10,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 142 [2022-12-11 19:55:10,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:11,097 INFO L130 PetriNetUnfolder]: 1019/2091 cut-off events. [2022-12-11 19:55:11,098 INFO L131 PetriNetUnfolder]: For 1311/1356 co-relation queries the response was YES. [2022-12-11 19:55:11,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5198 conditions, 2091 events. 1019/2091 cut-off events. For 1311/1356 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14098 event pairs, 266 based on Foata normal form. 89/1999 useless extension candidates. Maximal degree in co-relation 5113. Up to 910 conditions per place. [2022-12-11 19:55:11,116 INFO L137 encePairwiseOnDemand]: 133/142 looper letters, 57 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2022-12-11 19:55:11,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 153 transitions, 608 flow [2022-12-11 19:55:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 19:55:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 19:55:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 769 transitions. [2022-12-11 19:55:11,118 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6769366197183099 [2022-12-11 19:55:11,118 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 394 flow. Second operand 8 states and 769 transitions. [2022-12-11 19:55:11,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 153 transitions, 608 flow [2022-12-11 19:55:11,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 153 transitions, 601 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-11 19:55:11,126 INFO L231 Difference]: Finished difference. Result has 147 places, 139 transitions, 455 flow [2022-12-11 19:55:11,126 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=455, PETRI_PLACES=147, PETRI_TRANSITIONS=139} [2022-12-11 19:55:11,127 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 20 predicate places. [2022-12-11 19:55:11,127 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 139 transitions, 455 flow [2022-12-11 19:55:11,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:11,128 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:11,128 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:11,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 19:55:11,333 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,SelfDestructingSolverStorable5 [2022-12-11 19:55:11,334 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)] === [2022-12-11 19:55:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -737765260, now seen corresponding path program 1 times [2022-12-11 19:55:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957022771] [2022-12-11 19:55:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957022771] [2022-12-11 19:55:11,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957022771] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928177177] [2022-12-11 19:55:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:11,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:11,462 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) [2022-12-11 19:55:11,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 19:55:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 19:55:11,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:11,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:55:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928177177] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:11,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 19:55:11,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-12-11 19:55:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699852992] [2022-12-11 19:55:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:55:11,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:55:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:55:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:55:11,838 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 142 [2022-12-11 19:55:11,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 139 transitions, 455 flow. Second operand has 7 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:11,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:11,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 142 [2022-12-11 19:55:11,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:12,023 INFO L130 PetriNetUnfolder]: 421/1108 cut-off events. [2022-12-11 19:55:12,023 INFO L131 PetriNetUnfolder]: For 1533/1694 co-relation queries the response was YES. [2022-12-11 19:55:12,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 1108 events. 421/1108 cut-off events. For 1533/1694 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6605 event pairs, 106 based on Foata normal form. 82/1127 useless extension candidates. Maximal degree in co-relation 2798. Up to 358 conditions per place. [2022-12-11 19:55:12,038 INFO L137 encePairwiseOnDemand]: 134/142 looper letters, 54 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2022-12-11 19:55:12,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 155 transitions, 672 flow [2022-12-11 19:55:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:55:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:55:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 754 transitions. [2022-12-11 19:55:12,041 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7585513078470825 [2022-12-11 19:55:12,041 INFO L175 Difference]: Start difference. First operand has 147 places, 139 transitions, 455 flow. Second operand 7 states and 754 transitions. [2022-12-11 19:55:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 155 transitions, 672 flow [2022-12-11 19:55:12,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 155 transitions, 650 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-11 19:55:12,047 INFO L231 Difference]: Finished difference. Result has 150 places, 140 transitions, 465 flow [2022-12-11 19:55:12,047 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=150, PETRI_TRANSITIONS=140} [2022-12-11 19:55:12,048 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 23 predicate places. [2022-12-11 19:55:12,048 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 140 transitions, 465 flow [2022-12-11 19:55:12,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:12,049 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:12,049 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:12,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 19:55:12,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:12,256 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)] === [2022-12-11 19:55:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:12,256 INFO L85 PathProgramCache]: Analyzing trace with hash 609193225, now seen corresponding path program 1 times [2022-12-11 19:55:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:12,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221056652] [2022-12-11 19:55:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221056652] [2022-12-11 19:55:13,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221056652] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538007235] [2022-12-11 19:55:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:13,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:13,740 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) [2022-12-11 19:55:13,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 19:55:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:13,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-11 19:55:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:14,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:14,797 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 63 treesize of output 43 [2022-12-11 19:55:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:55:16,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:16,343 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 127 treesize of output 75 [2022-12-11 19:55:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:17,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538007235] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:55:17,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:55:17,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 19] total 60 [2022-12-11 19:55:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044331597] [2022-12-11 19:55:17,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:55:17,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-11 19:55:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-11 19:55:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2887, Unknown=0, NotChecked=0, Total=3540 [2022-12-11 19:55:17,567 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 142 [2022-12-11 19:55:17,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 140 transitions, 465 flow. Second operand has 60 states, 60 states have (on average 56.25) internal successors, (3375), 60 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:17,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:17,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 142 [2022-12-11 19:55:17,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:26,946 INFO L130 PetriNetUnfolder]: 9897/15860 cut-off events. [2022-12-11 19:55:26,946 INFO L131 PetriNetUnfolder]: For 19012/19012 co-relation queries the response was YES. [2022-12-11 19:55:27,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46726 conditions, 15860 events. 9897/15860 cut-off events. For 19012/19012 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 116481 event pairs, 1644 based on Foata normal form. 2/15788 useless extension candidates. Maximal degree in co-relation 43197. Up to 5155 conditions per place. [2022-12-11 19:55:27,111 INFO L137 encePairwiseOnDemand]: 105/142 looper letters, 549 selfloop transitions, 285 changer transitions 12/887 dead transitions. [2022-12-11 19:55:27,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 887 transitions, 5385 flow [2022-12-11 19:55:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-11 19:55:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-12-11 19:55:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5214 transitions. [2022-12-11 19:55:27,126 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43712273641851107 [2022-12-11 19:55:27,127 INFO L175 Difference]: Start difference. First operand has 150 places, 140 transitions, 465 flow. Second operand 84 states and 5214 transitions. [2022-12-11 19:55:27,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 887 transitions, 5385 flow [2022-12-11 19:55:27,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 887 transitions, 5252 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:55:27,192 INFO L231 Difference]: Finished difference. Result has 261 places, 428 transitions, 2845 flow [2022-12-11 19:55:27,193 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2845, PETRI_PLACES=261, PETRI_TRANSITIONS=428} [2022-12-11 19:55:27,194 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 134 predicate places. [2022-12-11 19:55:27,195 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 428 transitions, 2845 flow [2022-12-11 19:55:27,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 56.25) internal successors, (3375), 60 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:27,197 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:27,197 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:27,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 19:55:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:27,404 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)] === [2022-12-11 19:55:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -819926927, now seen corresponding path program 2 times [2022-12-11 19:55:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610693408] [2022-12-11 19:55:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:28,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:28,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610693408] [2022-12-11 19:55:28,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610693408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:28,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140835046] [2022-12-11 19:55:28,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:55:28,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:28,787 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) [2022-12-11 19:55:28,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 19:55:28,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 19:55:28,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:55:28,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-11 19:55:28,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:29,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:29,823 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 69 treesize of output 43 [2022-12-11 19:55:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:30,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:55:31,076 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:31,077 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 127 treesize of output 75 [2022-12-11 19:55:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:55:31,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140835046] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:55:31,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:55:31,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 19] total 54 [2022-12-11 19:55:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541580006] [2022-12-11 19:55:31,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:55:31,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-11 19:55:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-11 19:55:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=2406, Unknown=0, NotChecked=0, Total=2862 [2022-12-11 19:55:31,843 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 142 [2022-12-11 19:55:31,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 428 transitions, 2845 flow. Second operand has 54 states, 54 states have (on average 56.611111111111114) internal successors, (3057), 54 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:31,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:31,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 142 [2022-12-11 19:55:31,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:39,502 INFO L130 PetriNetUnfolder]: 14766/23493 cut-off events. [2022-12-11 19:55:39,502 INFO L131 PetriNetUnfolder]: For 78295/78295 co-relation queries the response was YES. [2022-12-11 19:55:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91417 conditions, 23493 events. 14766/23493 cut-off events. For 78295/78295 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 180646 event pairs, 2153 based on Foata normal form. 3/23339 useless extension candidates. Maximal degree in co-relation 91350. Up to 11938 conditions per place. [2022-12-11 19:55:39,831 INFO L137 encePairwiseOnDemand]: 105/142 looper letters, 622 selfloop transitions, 480 changer transitions 20/1164 dead transitions. [2022-12-11 19:55:39,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1164 transitions, 9833 flow [2022-12-11 19:55:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-11 19:55:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-12-11 19:55:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3872 transitions. [2022-12-11 19:55:39,839 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.426056338028169 [2022-12-11 19:55:39,839 INFO L175 Difference]: Start difference. First operand has 261 places, 428 transitions, 2845 flow. Second operand 64 states and 3872 transitions. [2022-12-11 19:55:39,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1164 transitions, 9833 flow [2022-12-11 19:55:41,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1164 transitions, 8613 flow, removed 440 selfloop flow, removed 22 redundant places. [2022-12-11 19:55:41,026 INFO L231 Difference]: Finished difference. Result has 335 places, 798 transitions, 6499 flow [2022-12-11 19:55:41,027 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=6499, PETRI_PLACES=335, PETRI_TRANSITIONS=798} [2022-12-11 19:55:41,028 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 208 predicate places. [2022-12-11 19:55:41,028 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 798 transitions, 6499 flow [2022-12-11 19:55:41,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 56.611111111111114) internal successors, (3057), 54 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:41,029 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:41,029 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:41,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 19:55:41,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:41,235 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)] === [2022-12-11 19:55:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2064562991, now seen corresponding path program 3 times [2022-12-11 19:55:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:41,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096494339] [2022-12-11 19:55:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:42,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096494339] [2022-12-11 19:55:42,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096494339] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:42,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374417986] [2022-12-11 19:55:42,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 19:55:42,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:42,519 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) [2022-12-11 19:55:42,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 19:55:42,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 19:55:42,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:55:42,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-11 19:55:42,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:43,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:43,832 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 63 treesize of output 43 [2022-12-11 19:55:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:44,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:55:44,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:44,769 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 127 treesize of output 75 [2022-12-11 19:55:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:45,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374417986] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:55:45,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:55:45,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 22] total 65 [2022-12-11 19:55:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615835871] [2022-12-11 19:55:45,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:55:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-11 19:55:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:55:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-11 19:55:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=3402, Unknown=0, NotChecked=0, Total=4160 [2022-12-11 19:55:45,994 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 142 [2022-12-11 19:55:45,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 798 transitions, 6499 flow. Second operand has 65 states, 65 states have (on average 56.0) internal successors, (3640), 65 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:45,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:55:45,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 142 [2022-12-11 19:55:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:55:54,137 INFO L130 PetriNetUnfolder]: 14747/24536 cut-off events. [2022-12-11 19:55:54,137 INFO L131 PetriNetUnfolder]: For 148123/148406 co-relation queries the response was YES. [2022-12-11 19:55:54,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112883 conditions, 24536 events. 14747/24536 cut-off events. For 148123/148406 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 201246 event pairs, 3249 based on Foata normal form. 70/24434 useless extension candidates. Maximal degree in co-relation 112786. Up to 12906 conditions per place. [2022-12-11 19:55:54,521 INFO L137 encePairwiseOnDemand]: 105/142 looper letters, 716 selfloop transitions, 578 changer transitions 18/1356 dead transitions. [2022-12-11 19:55:54,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1356 transitions, 13564 flow [2022-12-11 19:55:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-11 19:55:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-12-11 19:55:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3814 transitions. [2022-12-11 19:55:54,528 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42633579253297565 [2022-12-11 19:55:54,529 INFO L175 Difference]: Start difference. First operand has 335 places, 798 transitions, 6499 flow. Second operand 63 states and 3814 transitions. [2022-12-11 19:55:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1356 transitions, 13564 flow [2022-12-11 19:55:56,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1356 transitions, 13143 flow, removed 195 selfloop flow, removed 17 redundant places. [2022-12-11 19:55:56,395 INFO L231 Difference]: Finished difference. Result has 403 places, 1048 transitions, 10725 flow [2022-12-11 19:55:56,396 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=6252, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=10725, PETRI_PLACES=403, PETRI_TRANSITIONS=1048} [2022-12-11 19:55:56,397 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 276 predicate places. [2022-12-11 19:55:56,397 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 1048 transitions, 10725 flow [2022-12-11 19:55:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 56.0) internal successors, (3640), 65 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:55:56,398 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:55:56,398 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:55:56,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 19:55:56,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:56,599 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)] === [2022-12-11 19:55:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:55:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash -580177217, now seen corresponding path program 4 times [2022-12-11 19:55:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:55:56,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317872081] [2022-12-11 19:55:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:55:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:55:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:55:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:58,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:55:58,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317872081] [2022-12-11 19:55:58,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317872081] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:55:58,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135352739] [2022-12-11 19:55:58,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 19:55:58,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:55:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:55:58,200 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) [2022-12-11 19:55:58,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 19:55:58,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 19:55:58,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:55:58,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-11 19:55:58,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:55:59,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:55:59,070 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 69 treesize of output 43 [2022-12-11 19:55:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:55:59,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:56:00,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:56:00,549 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 164 treesize of output 164 [2022-12-11 19:56:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:56:03,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135352739] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:56:03,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:56:03,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21, 21] total 59 [2022-12-11 19:56:03,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737133702] [2022-12-11 19:56:03,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:56:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-11 19:56:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:56:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-11 19:56:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=2956, Unknown=0, NotChecked=0, Total=3422 [2022-12-11 19:56:03,855 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 142 [2022-12-11 19:56:03,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 1048 transitions, 10725 flow. Second operand has 59 states, 59 states have (on average 59.25423728813559) internal successors, (3496), 59 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:56:03,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:56:03,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 142 [2022-12-11 19:56:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:56:16,098 INFO L130 PetriNetUnfolder]: 19002/32519 cut-off events. [2022-12-11 19:56:16,098 INFO L131 PetriNetUnfolder]: For 261005/261896 co-relation queries the response was YES. [2022-12-11 19:56:16,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166945 conditions, 32519 events. 19002/32519 cut-off events. For 261005/261896 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 286538 event pairs, 2465 based on Foata normal form. 292/32407 useless extension candidates. Maximal degree in co-relation 166813. Up to 11153 conditions per place. [2022-12-11 19:56:16,881 INFO L137 encePairwiseOnDemand]: 106/142 looper letters, 728 selfloop transitions, 1168 changer transitions 12/1968 dead transitions. [2022-12-11 19:56:16,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1968 transitions, 23260 flow [2022-12-11 19:56:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-11 19:56:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-12-11 19:56:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3686 transitions. [2022-12-11 19:56:16,887 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45539906103286387 [2022-12-11 19:56:16,887 INFO L175 Difference]: Start difference. First operand has 403 places, 1048 transitions, 10725 flow. Second operand 57 states and 3686 transitions. [2022-12-11 19:56:16,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1968 transitions, 23260 flow [2022-12-11 19:56:21,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 1968 transitions, 22781 flow, removed 119 selfloop flow, removed 28 redundant places. [2022-12-11 19:56:21,607 INFO L231 Difference]: Finished difference. Result has 452 places, 1609 transitions, 20788 flow [2022-12-11 19:56:21,608 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=20788, PETRI_PLACES=452, PETRI_TRANSITIONS=1609} [2022-12-11 19:56:21,609 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 325 predicate places. [2022-12-11 19:56:21,609 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1609 transitions, 20788 flow [2022-12-11 19:56:21,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 59.25423728813559) internal successors, (3496), 59 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:56:21,611 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:56:21,611 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:56:21,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 19:56:21,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:56:21,820 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)] === [2022-12-11 19:56:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:56:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1603118091, now seen corresponding path program 5 times [2022-12-11 19:56:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:56:21,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038962541] [2022-12-11 19:56:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:56:21,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:56:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:56:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:56:23,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:56:23,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038962541] [2022-12-11 19:56:23,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038962541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:56:23,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927596720] [2022-12-11 19:56:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 19:56:23,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:56:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:56:23,784 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) [2022-12-11 19:56:23,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 19:56:23,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 19:56:23,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:56:23,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-11 19:56:23,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:56:23,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:56:24,074 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 19:56:24,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 19:56:24,743 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 35 treesize of output 33 [2022-12-11 19:56:24,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:56:24,929 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 63 treesize of output 43 [2022-12-11 19:56:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:56:25,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:56:26,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:56:26,841 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 273 treesize of output 273 [2022-12-11 19:56:26,849 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 178 treesize of output 166 [2022-12-11 19:56:26,857 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 166 treesize of output 148 [2022-12-11 19:56:26,865 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 148 treesize of output 142 [2022-12-11 19:56:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:56:33,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927596720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:56:33,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:56:33,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 24, 23] total 68 [2022-12-11 19:56:33,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073736686] [2022-12-11 19:56:33,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:56:33,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-11 19:56:33,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:56:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-11 19:56:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=3956, Unknown=4, NotChecked=0, Total=4556 [2022-12-11 19:56:33,090 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 142 [2022-12-11 19:56:33,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1609 transitions, 20788 flow. Second operand has 68 states, 68 states have (on average 44.044117647058826) internal successors, (2995), 68 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:56:33,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:56:33,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 142 [2022-12-11 19:56:33,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:56:53,674 INFO L130 PetriNetUnfolder]: 25985/43477 cut-off events. [2022-12-11 19:56:53,674 INFO L131 PetriNetUnfolder]: For 463668/465828 co-relation queries the response was YES. [2022-12-11 19:56:54,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247888 conditions, 43477 events. 25985/43477 cut-off events. For 463668/465828 co-relation queries the response was YES. Maximal size of possible extension queue 2322. Compared 385527 event pairs, 3541 based on Foata normal form. 129/43254 useless extension candidates. Maximal degree in co-relation 247729. Up to 22794 conditions per place. [2022-12-11 19:56:55,133 INFO L137 encePairwiseOnDemand]: 103/142 looper letters, 1200 selfloop transitions, 1496 changer transitions 20/2755 dead transitions. [2022-12-11 19:56:55,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 2755 transitions, 40235 flow [2022-12-11 19:56:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-11 19:56:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-12-11 19:56:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3161 transitions. [2022-12-11 19:56:55,139 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34782130281690143 [2022-12-11 19:56:55,139 INFO L175 Difference]: Start difference. First operand has 452 places, 1609 transitions, 20788 flow. Second operand 64 states and 3161 transitions. [2022-12-11 19:56:55,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 2755 transitions, 40235 flow [2022-12-11 19:57:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 2755 transitions, 39573 flow, removed 230 selfloop flow, removed 25 redundant places. [2022-12-11 19:57:09,178 INFO L231 Difference]: Finished difference. Result has 517 places, 2345 transitions, 36450 flow [2022-12-11 19:57:09,179 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=20370, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=803, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=36450, PETRI_PLACES=517, PETRI_TRANSITIONS=2345} [2022-12-11 19:57:09,180 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 390 predicate places. [2022-12-11 19:57:09,180 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 2345 transitions, 36450 flow [2022-12-11 19:57:09,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 44.044117647058826) internal successors, (2995), 68 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:57:09,181 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:57:09,181 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:57:09,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 19:57:09,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-11 19:57:09,387 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)] === [2022-12-11 19:57:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:57:09,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1232038169, now seen corresponding path program 6 times [2022-12-11 19:57:09,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:57:09,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860341864] [2022-12-11 19:57:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:57:09,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:57:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:57:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:57:10,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:57:10,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860341864] [2022-12-11 19:57:10,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860341864] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:57:10,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404812335] [2022-12-11 19:57:10,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 19:57:10,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:57:10,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:57:10,752 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) [2022-12-11 19:57:10,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 19:57:10,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-11 19:57:10,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:57:10,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-11 19:57:10,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:57:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:57:11,729 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 35 treesize of output 33 [2022-12-11 19:57:11,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:57:11,966 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 69 treesize of output 43 [2022-12-11 19:57:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:57:12,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:57:21,704 WARN L233 SmtUtils]: Spent 8.36s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:57:28,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:57:28,426 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 276 treesize of output 276 [2022-12-11 19:57:28,434 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 181 treesize of output 163 [2022-12-11 19:57:28,440 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 163 treesize of output 151 [2022-12-11 19:57:28,446 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 151 treesize of output 145 [2022-12-11 19:57:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:57:33,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404812335] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:57:33,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:57:33,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 28] total 73 [2022-12-11 19:57:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598926797] [2022-12-11 19:57:33,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:57:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-11 19:57:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:57:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-11 19:57:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=4640, Unknown=4, NotChecked=0, Total=5256 [2022-12-11 19:57:33,037 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 142 [2022-12-11 19:57:33,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 2345 transitions, 36450 flow. Second operand has 73 states, 73 states have (on average 55.67123287671233) internal successors, (4064), 73 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:57:33,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:57:33,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 142 [2022-12-11 19:57:33,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:57:53,419 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 65 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:58:01,216 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 73 DAG size of output: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:58:10,262 WARN L233 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 85 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:58:15,445 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 73 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:58:36,676 INFO L130 PetriNetUnfolder]: 25258/44182 cut-off events. [2022-12-11 19:58:36,677 INFO L131 PetriNetUnfolder]: For 625697/629992 co-relation queries the response was YES. [2022-12-11 19:58:38,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284660 conditions, 44182 events. 25258/44182 cut-off events. For 625697/629992 co-relation queries the response was YES. Maximal size of possible extension queue 2364. Compared 411467 event pairs, 1198 based on Foata normal form. 2240/45883 useless extension candidates. Maximal degree in co-relation 284476. Up to 10587 conditions per place. [2022-12-11 19:58:38,822 INFO L137 encePairwiseOnDemand]: 104/142 looper letters, 688 selfloop transitions, 3029 changer transitions 7/3850 dead transitions. [2022-12-11 19:58:38,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 3850 transitions, 66681 flow [2022-12-11 19:58:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-11 19:58:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-12-11 19:58:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5103 transitions. [2022-12-11 19:58:38,830 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4227837613918807 [2022-12-11 19:58:38,830 INFO L175 Difference]: Start difference. First operand has 517 places, 2345 transitions, 36450 flow. Second operand 85 states and 5103 transitions. [2022-12-11 19:58:38,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 3850 transitions, 66681 flow [2022-12-11 19:59:05,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 3850 transitions, 64919 flow, removed 758 selfloop flow, removed 25 redundant places. [2022-12-11 19:59:05,532 INFO L231 Difference]: Finished difference. Result has 601 places, 3475 transitions, 64274 flow [2022-12-11 19:59:05,534 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=35495, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1961, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=64274, PETRI_PLACES=601, PETRI_TRANSITIONS=3475} [2022-12-11 19:59:05,535 INFO L295 CegarLoopForPetriNet]: 127 programPoint places, 474 predicate places. [2022-12-11 19:59:05,535 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 3475 transitions, 64274 flow [2022-12-11 19:59:05,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 55.67123287671233) internal successors, (4064), 73 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:59:05,537 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:59:05,537 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:59:05,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-11 19:59:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-11 19:59:05,742 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)] === [2022-12-11 19:59:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:59:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1129081853, now seen corresponding path program 7 times [2022-12-11 19:59:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:59:05,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854975603] [2022-12-11 19:59:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:59:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:59:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:59:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:59:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:59:07,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854975603] [2022-12-11 19:59:07,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854975603] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:59:07,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879132151] [2022-12-11 19:59:07,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 19:59:07,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:59:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:59:07,606 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) [2022-12-11 19:59:07,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-11 19:59:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:59:07,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 19:59:07,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:59:08,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-11 19:59:08,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:59:08,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:59:08,903 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 35 treesize of output 33 [2022-12-11 19:59:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 19:59:09,030 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 35 treesize of output 33 [2022-12-11 19:59:09,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:09,384 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 69 treesize of output 43 [2022-12-11 19:59:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:59:09,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:59:23,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:23,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2022-12-11 19:59:23,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:23,502 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 657 treesize of output 627 [2022-12-11 19:59:23,515 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 440 treesize of output 392 [2022-12-11 19:59:23,527 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 532 treesize of output 436 [2022-12-11 19:59:23,545 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:23,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 465 treesize of output 447 [2022-12-11 19:59:25,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:25,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2022-12-11 19:59:25,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:25,062 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 651 treesize of output 621 [2022-12-11 19:59:25,071 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 574 treesize of output 526 [2022-12-11 19:59:25,081 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 526 treesize of output 430 [2022-12-11 19:59:25,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:25,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 459 treesize of output 441 [2022-12-11 19:59:27,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:27,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2022-12-11 19:59:27,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:27,788 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 319 treesize of output 309 [2022-12-11 19:59:27,797 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 282 treesize of output 234 [2022-12-11 19:59:27,806 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 234 treesize of output 210 [2022-12-11 19:59:27,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:27,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 116 [2022-12-11 19:59:28,177 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:59:28,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 1 [2022-12-11 19:59:28,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:28,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2022-12-11 19:59:28,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:28,208 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 651 treesize of output 621 [2022-12-11 19:59:28,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:59:28,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 603 treesize of output 585 [2022-12-11 19:59:28,236 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 275 treesize of output 227 [2022-12-11 19:59:28,246 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 502 treesize of output 406 [2022-12-11 19:59:29,657 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:59:29,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 1 [2022-12-11 19:59:29,675 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:59:29,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 1 [2022-12-11 19:59:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:59:30,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879132151] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:59:30,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:59:30,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 30] total 77 [2022-12-11 19:59:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731879180] [2022-12-11 19:59:30,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:59:30,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-11 19:59:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:59:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-11 19:59:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=5110, Unknown=90, NotChecked=0, Total=5852 [2022-12-11 19:59:30,977 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 142 [2022-12-11 19:59:30,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 3475 transitions, 64274 flow. Second operand has 77 states, 77 states have (on average 46.42857142857143) internal successors, (3575), 77 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:59:30,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:59:30,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 142 [2022-12-11 19:59:30,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:59:43,858 WARN L233 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 170 DAG size of output: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 19:59:58,393 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 160 DAG size of output: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 20:00:05,364 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse19 (<= c_~min2~0 c_~min3~0)) (.cse0 (= c_~min2~0 c_~min1~0)) (.cse13 (< c_~min3~0 c_~min2~0))) (let ((.cse2 (select |c_#memory_int| c_~A~0.base)) (.cse3 (and (or .cse19 (= c_~min1~0 c_~min3~0)) (or .cse0 .cse13)))) (and (or .cse0 (forall ((~M~0 Int)) (let ((.cse1 (select .cse2 (+ c_~A~0.offset (* ~M~0 4))))) (or (< 0 ~M~0) (< .cse1 c_~min2~0) (not (< .cse1 c_~min3~0)) (< (+ ~M~0 1) c_~N~0))))) (or .cse0 (< 0 c_~min2~0)) (or .cse3 (< (+ |c_thread3Thread1of1ForFork0_#t~post7| 1) c_~N~0)) (or .cse0 (forall ((~M~0 Int) (v_ArrVal_382 (Array Int Int)) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (let ((.cse5 (select (select (store (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (< 0 ~M~0) (< (select (select .cse4 c_~A~0.base) c_~A~0.offset) c_~min1~0) (< .cse5 c_~min2~0) (not (< .cse5 c_~min3~0)) (< (+ ~M~0 1) c_~N~0)))))) (forall ((v_ArrVal_382 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (or (forall ((~M~0 Int) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse6 (select (select (store (store .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~min2~0 .cse6) (= c_~min1~0 .cse6) (< 0 ~M~0) (not (< .cse6 c_~min3~0)) (< (+ ~M~0 1) c_~N~0)))) (< (select (select .cse7 c_~A~0.base) c_~A~0.offset) c_~min1~0)))) (forall ((v_ArrVal_382 (Array Int Int))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (let ((.cse8 (select (select .cse10 c_~A~0.base) c_~A~0.offset))) (or (not (< .cse8 c_~min1~0)) (forall ((~M~0 Int) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse9 (select (select (store (store .cse10 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= .cse9 .cse8) (<= c_~min2~0 .cse9) (< 0 ~M~0) (not (< .cse9 c_~min3~0)) (< (+ ~M~0 1) c_~N~0)))))))) (or (forall ((~M~0 Int) (v_ArrVal_382 (Array Int Int)) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (let ((.cse11 (select (select .cse12 c_~A~0.base) c_~A~0.offset))) (or (not (< .cse11 c_~min1~0)) (< 0 ~M~0) (= c_~min2~0 .cse11) (< (select (select (store (store .cse12 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~min3~0) (< (+ ~M~0 1) c_~N~0))))) .cse13) (forall ((~M~0 Int)) (let ((.cse14 (select .cse2 (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~min1~0 .cse14) (< 0 ~M~0) (not (< .cse14 c_~min3~0)) (<= c_~min2~0 .cse14) (< (+ ~M~0 1) c_~N~0)))) (forall ((v_ArrVal_382 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (let ((.cse15 (select (select .cse17 c_~A~0.base) c_~A~0.offset))) (or (not (< .cse15 c_~min1~0)) (forall ((~M~0 Int) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse16 (select (select (store (store .cse17 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (< 0 ~M~0) (< .cse16 c_~min2~0) (not (< .cse16 c_~min3~0)) (< (+ ~M~0 1) c_~N~0)))) (= c_~min2~0 .cse15))))) (or .cse3 (< (+ c_thread3Thread1of1ForFork0_~i~2 1) c_~N~0)) (or .cse3 (forall ((~M~0 Int)) (or (< (select .cse2 (+ c_~A~0.offset (* ~M~0 4))) c_~min3~0) (< 0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (or .cse3 (forall ((~M~0 Int) (v_ArrVal_382 (Array Int Int)) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (or (< 0 ~M~0) (< (select (select .cse18 c_~A~0.base) c_~A~0.offset) c_~min1~0) (< (select (select (store (store .cse18 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~min3~0) (< (+ ~M~0 1) c_~N~0))))) (or (<= c_~min2~0 0) (= c_~min1~0 0)) (or .cse19 (forall ((~M~0 Int) (v_ArrVal_382 (Array Int Int)) (v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_382))) (let ((.cse20 (select (select .cse21 c_~A~0.base) c_~A~0.offset))) (or (not (< .cse20 c_~min1~0)) (< 0 ~M~0) (= c_~min3~0 .cse20) (< (select (select (store (store .cse21 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_383) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_384) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~min3~0) (< (+ ~M~0 1) c_~N~0))))))))) is different from false [2022-12-11 20:01:14,931 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 103 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)