/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 --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 00:30:00,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 00:30:00,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 00:30:00,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 00:30:00,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 00:30:00,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 00:30:00,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 00:30:00,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 00:30:00,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 00:30:00,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 00:30:00,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 00:30:00,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 00:30:00,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 00:30:00,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 00:30:00,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 00:30:00,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 00:30:00,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 00:30:00,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 00:30:00,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 00:30:00,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 00:30:00,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 00:30:00,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 00:30:00,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 00:30:00,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 00:30:00,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 00:30:00,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 00:30:00,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 00:30:00,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 00:30:00,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 00:30:00,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 00:30:00,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 00:30:00,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 00:30:00,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 00:30:00,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 00:30:00,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 00:30:00,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 00:30:00,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 00:30:00,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 00:30:00,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 00:30:00,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 00:30:00,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 00:30:00,124 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 [2022-12-12 00:30:00,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 00:30:00,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 00:30:00,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 00:30:00,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 00:30:00,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 00:30:00,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 00:30:00,152 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 00:30:00,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 00:30:00,152 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 00:30:00,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 00:30:00,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 00:30:00,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 00:30:00,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 00:30:00,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 00:30:00,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 00:30:00,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 00:30:00,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 00:30:00,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 00:30:00,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 00:30:00,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 00:30:00,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 00:30:00,431 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 00:30:00,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-12 00:30:01,463 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 00:30:01,643 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 00:30:01,643 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-12 00:30:01,648 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4053167c4/b72cbf6895f14a2b8184e6e022d8b997/FLAG91cadd3c9 [2022-12-12 00:30:01,660 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4053167c4/b72cbf6895f14a2b8184e6e022d8b997 [2022-12-12 00:30:01,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 00:30:01,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 00:30:01,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 00:30:01,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 00:30:01,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 00:30:01,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111ada4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01, skipping insertion in model container [2022-12-12 00:30:01,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 00:30:01,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 00:30:01,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,805 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/parallel-misc-2.wvr.c[2554,2567] [2022-12-12 00:30:01,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 00:30:01,813 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 00:30:01,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:30:01,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:30:01,826 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/parallel-misc-2.wvr.c[2554,2567] [2022-12-12 00:30:01,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 00:30:01,834 INFO L208 MainTranslator]: Completed translation [2022-12-12 00:30:01,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01 WrapperNode [2022-12-12 00:30:01,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 00:30:01,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 00:30:01,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 00:30:01,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 00:30:01,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,859 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-12-12 00:30:01,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 00:30:01,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 00:30:01,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 00:30:01,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 00:30:01,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 00:30:01,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 00:30:01,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 00:30:01,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 00:30:01,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (1/1) ... [2022-12-12 00:30:01,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 00:30:01,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:01,916 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) [2022-12-12 00:30:01,948 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 [2022-12-12 00:30:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 00:30:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 00:30:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 00:30:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 00:30:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 00:30:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 00:30:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 00:30:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 00:30:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 00:30:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 00:30:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 00:30:01,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 00:30:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 00:30:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 00:30:01,959 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 00:30:02,039 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 00:30:02,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 00:30:02,245 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 00:30:02,258 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 00:30:02,258 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 00:30:02,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:30:02 BoogieIcfgContainer [2022-12-12 00:30:02,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 00:30:02,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 00:30:02,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 00:30:02,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 00:30:02,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:30:01" (1/3) ... [2022-12-12 00:30:02,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb1ecd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:30:02, skipping insertion in model container [2022-12-12 00:30:02,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:30:01" (2/3) ... [2022-12-12 00:30:02,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb1ecd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:30:02, skipping insertion in model container [2022-12-12 00:30:02,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:30:02" (3/3) ... [2022-12-12 00:30:02,264 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-12-12 00:30:02,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 00:30:02,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 00:30:02,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 00:30:02,309 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 00:30:02,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 97 transitions, 210 flow [2022-12-12 00:30:02,372 INFO L130 PetriNetUnfolder]: 8/95 cut-off events. [2022-12-12 00:30:02,372 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 00:30:02,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 8/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-12-12 00:30:02,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 97 transitions, 210 flow [2022-12-12 00:30:02,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 87 transitions, 186 flow [2022-12-12 00:30:02,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 00:30:02,391 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;@3b50d39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 00:30:02,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 00:30:02,412 INFO L130 PetriNetUnfolder]: 8/86 cut-off events. [2022-12-12 00:30:02,412 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 00:30:02,413 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:02,413 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] [2022-12-12 00:30:02,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash 747985082, now seen corresponding path program 1 times [2022-12-12 00:30:02,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:02,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791510747] [2022-12-12 00:30:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:03,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:03,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791510747] [2022-12-12 00:30:03,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791510747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:03,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:03,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 00:30:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203263430] [2022-12-12 00:30:03,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:03,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 00:30:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 00:30:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 00:30:03,105 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 00:30:03,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:03,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:03,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 00:30:03,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:03,212 INFO L130 PetriNetUnfolder]: 22/142 cut-off events. [2022-12-12 00:30:03,212 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-12 00:30:03,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 142 events. 22/142 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 284 event pairs, 0 based on Foata normal form. 14/142 useless extension candidates. Maximal degree in co-relation 97. Up to 33 conditions per place. [2022-12-12 00:30:03,215 INFO L137 encePairwiseOnDemand]: 79/97 looper letters, 15 selfloop transitions, 9 changer transitions 7/94 dead transitions. [2022-12-12 00:30:03,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 271 flow [2022-12-12 00:30:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 00:30:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 00:30:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2022-12-12 00:30:03,225 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7869415807560137 [2022-12-12 00:30:03,227 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-12-12 00:30:03,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 94 transitions, 271 flow [2022-12-12 00:30:03,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 240 flow [2022-12-12 00:30:03,229 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 240 flow [2022-12-12 00:30:03,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:03,230 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:03,230 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] [2022-12-12 00:30:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 00:30:03,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1494380371, now seen corresponding path program 1 times [2022-12-12 00:30:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:03,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716340827] [2022-12-12 00:30:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:03,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:03,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716340827] [2022-12-12 00:30:03,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716340827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:03,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:03,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:30:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311427478] [2022-12-12 00:30:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:03,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:30:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:30:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:30:03,472 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-12-12 00:30:03,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:03,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:03,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-12-12 00:30:03,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:03,564 INFO L130 PetriNetUnfolder]: 88/311 cut-off events. [2022-12-12 00:30:03,564 INFO L131 PetriNetUnfolder]: For 148/158 co-relation queries the response was YES. [2022-12-12 00:30:03,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 311 events. 88/311 cut-off events. For 148/158 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1262 event pairs, 8 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 383. Up to 81 conditions per place. [2022-12-12 00:30:03,581 INFO L137 encePairwiseOnDemand]: 88/97 looper letters, 39 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2022-12-12 00:30:03,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 404 flow [2022-12-12 00:30:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:30:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:30:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2022-12-12 00:30:03,583 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7560137457044673 [2022-12-12 00:30:03,583 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2022-12-12 00:30:03,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 106 transitions, 404 flow [2022-12-12 00:30:03,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 106 transitions, 404 flow [2022-12-12 00:30:03,585 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 106 transitions, 404 flow [2022-12-12 00:30:03,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:03,585 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:03,585 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] [2022-12-12 00:30:03,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 00:30:03,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1062408179, now seen corresponding path program 2 times [2022-12-12 00:30:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:03,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645207176] [2022-12-12 00:30:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:03,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:03,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:03,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645207176] [2022-12-12 00:30:03,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645207176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:03,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:03,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:30:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491514392] [2022-12-12 00:30:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:03,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:30:03,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:30:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:30:03,857 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-12-12 00:30:03,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 106 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:03,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:03,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-12-12 00:30:03,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:03,945 INFO L130 PetriNetUnfolder]: 85/284 cut-off events. [2022-12-12 00:30:03,945 INFO L131 PetriNetUnfolder]: For 220/275 co-relation queries the response was YES. [2022-12-12 00:30:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 284 events. 85/284 cut-off events. For 220/275 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1082 event pairs, 6 based on Foata normal form. 1/245 useless extension candidates. Maximal degree in co-relation 453. Up to 71 conditions per place. [2022-12-12 00:30:03,949 INFO L137 encePairwiseOnDemand]: 88/97 looper letters, 34 selfloop transitions, 7 changer transitions 3/103 dead transitions. [2022-12-12 00:30:03,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 472 flow [2022-12-12 00:30:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:30:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:30:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 432 transitions. [2022-12-12 00:30:03,951 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7422680412371134 [2022-12-12 00:30:03,951 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2022-12-12 00:30:03,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 103 transitions, 472 flow [2022-12-12 00:30:03,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 100 transitions, 449 flow [2022-12-12 00:30:03,953 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 449 flow [2022-12-12 00:30:03,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:03,954 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:03,954 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] [2022-12-12 00:30:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 00:30:03,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1101722620, now seen corresponding path program 1 times [2022-12-12 00:30:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:03,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432250576] [2022-12-12 00:30:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:04,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432250576] [2022-12-12 00:30:04,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432250576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:04,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:04,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:30:04,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63869490] [2022-12-12 00:30:04,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:04,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:30:04,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:30:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:30:04,123 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2022-12-12 00:30:04,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:04,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:04,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2022-12-12 00:30:04,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:04,249 INFO L130 PetriNetUnfolder]: 113/363 cut-off events. [2022-12-12 00:30:04,249 INFO L131 PetriNetUnfolder]: For 511/587 co-relation queries the response was YES. [2022-12-12 00:30:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 363 events. 113/363 cut-off events. For 511/587 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1630 event pairs, 5 based on Foata normal form. 4/320 useless extension candidates. Maximal degree in co-relation 766. Up to 118 conditions per place. [2022-12-12 00:30:04,251 INFO L137 encePairwiseOnDemand]: 84/97 looper letters, 53 selfloop transitions, 14 changer transitions 3/125 dead transitions. [2022-12-12 00:30:04,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 125 transitions, 747 flow [2022-12-12 00:30:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 00:30:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 00:30:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 488 transitions. [2022-12-12 00:30:04,252 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7187039764359352 [2022-12-12 00:30:04,253 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 18 predicate places. [2022-12-12 00:30:04,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 125 transitions, 747 flow [2022-12-12 00:30:04,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 122 transitions, 713 flow [2022-12-12 00:30:04,255 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 713 flow [2022-12-12 00:30:04,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:04,255 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:04,255 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] [2022-12-12 00:30:04,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 00:30:04,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1057588982, now seen corresponding path program 1 times [2022-12-12 00:30:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731031659] [2022-12-12 00:30:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:04,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731031659] [2022-12-12 00:30:04,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731031659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:04,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:04,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:30:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089267234] [2022-12-12 00:30:04,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:04,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:30:04,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:30:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:30:04,406 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2022-12-12 00:30:04,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:04,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:04,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2022-12-12 00:30:04,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:04,530 INFO L130 PetriNetUnfolder]: 103/339 cut-off events. [2022-12-12 00:30:04,530 INFO L131 PetriNetUnfolder]: For 728/812 co-relation queries the response was YES. [2022-12-12 00:30:04,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 339 events. 103/339 cut-off events. For 728/812 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1384 event pairs, 5 based on Foata normal form. 6/306 useless extension candidates. Maximal degree in co-relation 872. Up to 113 conditions per place. [2022-12-12 00:30:04,533 INFO L137 encePairwiseOnDemand]: 86/97 looper letters, 59 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2022-12-12 00:30:04,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 131 transitions, 928 flow [2022-12-12 00:30:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 00:30:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 00:30:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2022-12-12 00:30:04,534 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7098674521354934 [2022-12-12 00:30:04,537 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 24 predicate places. [2022-12-12 00:30:04,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 131 transitions, 928 flow [2022-12-12 00:30:04,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 131 transitions, 928 flow [2022-12-12 00:30:04,539 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 928 flow [2022-12-12 00:30:04,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:04,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:04,540 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] [2022-12-12 00:30:04,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 00:30:04,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:04,541 INFO L85 PathProgramCache]: Analyzing trace with hash 629708879, now seen corresponding path program 1 times [2022-12-12 00:30:04,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:04,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926771385] [2022-12-12 00:30:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926771385] [2022-12-12 00:30:04,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926771385] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746542800] [2022-12-12 00:30:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:04,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:04,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:04,826 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) [2022-12-12 00:30:05,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 00:30:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:05,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 00:30:05,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:05,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:05,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746542800] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:05,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:05,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-12 00:30:05,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563259178] [2022-12-12 00:30:05,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:05,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:30:05,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:30:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:30:05,523 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 00:30:05,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 928 flow. Second operand has 20 states, 20 states have (on average 63.05) internal successors, (1261), 20 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:05,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:05,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 00:30:05,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:06,763 INFO L130 PetriNetUnfolder]: 309/798 cut-off events. [2022-12-12 00:30:06,764 INFO L131 PetriNetUnfolder]: For 2158/2218 co-relation queries the response was YES. [2022-12-12 00:30:06,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 798 events. 309/798 cut-off events. For 2158/2218 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3902 event pairs, 4 based on Foata normal form. 8/724 useless extension candidates. Maximal degree in co-relation 2827. Up to 357 conditions per place. [2022-12-12 00:30:06,769 INFO L137 encePairwiseOnDemand]: 80/97 looper letters, 160 selfloop transitions, 75 changer transitions 0/288 dead transitions. [2022-12-12 00:30:06,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 288 transitions, 2775 flow [2022-12-12 00:30:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-12 00:30:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-12 00:30:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2423 transitions. [2022-12-12 00:30:06,773 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6751184173864586 [2022-12-12 00:30:06,774 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 60 predicate places. [2022-12-12 00:30:06,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 288 transitions, 2775 flow [2022-12-12 00:30:06,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 288 transitions, 2775 flow [2022-12-12 00:30:06,779 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 288 transitions, 2775 flow [2022-12-12 00:30:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 63.05) internal successors, (1261), 20 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:06,780 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:06,780 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:06,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 00:30:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 00:30:06,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1559798860, now seen corresponding path program 2 times [2022-12-12 00:30:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:06,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068238761] [2022-12-12 00:30:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 00:30:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:07,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068238761] [2022-12-12 00:30:07,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068238761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:07,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:07,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 00:30:07,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388201458] [2022-12-12 00:30:07,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:07,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 00:30:07,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:07,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 00:30:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 00:30:07,100 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 00:30:07,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 288 transitions, 2775 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:07,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:07,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 00:30:07,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:07,294 INFO L130 PetriNetUnfolder]: 677/1785 cut-off events. [2022-12-12 00:30:07,294 INFO L131 PetriNetUnfolder]: For 6678/7092 co-relation queries the response was YES. [2022-12-12 00:30:07,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7330 conditions, 1785 events. 677/1785 cut-off events. For 6678/7092 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12204 event pairs, 11 based on Foata normal form. 81/1678 useless extension candidates. Maximal degree in co-relation 6428. Up to 825 conditions per place. [2022-12-12 00:30:07,306 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 105 selfloop transitions, 5 changer transitions 0/332 dead transitions. [2022-12-12 00:30:07,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 332 transitions, 3641 flow [2022-12-12 00:30:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 00:30:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 00:30:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2022-12-12 00:30:07,308 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-12-12 00:30:07,308 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 63 predicate places. [2022-12-12 00:30:07,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 332 transitions, 3641 flow [2022-12-12 00:30:07,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 332 transitions, 3641 flow [2022-12-12 00:30:07,318 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 332 transitions, 3641 flow [2022-12-12 00:30:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:07,319 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:07,319 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 00:30:07,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1643087028, now seen corresponding path program 1 times [2022-12-12 00:30:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613743538] [2022-12-12 00:30:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 00:30:07,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:07,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613743538] [2022-12-12 00:30:07,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613743538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:07,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:07,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 00:30:07,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234851015] [2022-12-12 00:30:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:07,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 00:30:07,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:07,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 00:30:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 00:30:07,423 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 00:30:07,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 332 transitions, 3641 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:07,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:07,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 00:30:07,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:07,864 INFO L130 PetriNetUnfolder]: 1596/4045 cut-off events. [2022-12-12 00:30:07,864 INFO L131 PetriNetUnfolder]: For 23045/23644 co-relation queries the response was YES. [2022-12-12 00:30:07,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18900 conditions, 4045 events. 1596/4045 cut-off events. For 23045/23644 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 34931 event pairs, 29 based on Foata normal form. 4/3673 useless extension candidates. Maximal degree in co-relation 16197. Up to 2046 conditions per place. [2022-12-12 00:30:07,895 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 239 selfloop transitions, 5 changer transitions 0/470 dead transitions. [2022-12-12 00:30:07,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 470 transitions, 6389 flow [2022-12-12 00:30:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 00:30:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 00:30:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2022-12-12 00:30:07,896 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8994845360824743 [2022-12-12 00:30:07,897 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 66 predicate places. [2022-12-12 00:30:07,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 470 transitions, 6389 flow [2022-12-12 00:30:07,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 470 transitions, 6389 flow [2022-12-12 00:30:07,956 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 470 transitions, 6389 flow [2022-12-12 00:30:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:07,957 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:07,957 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:07,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 00:30:07,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2098495500, now seen corresponding path program 1 times [2022-12-12 00:30:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883276905] [2022-12-12 00:30:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:08,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883276905] [2022-12-12 00:30:08,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883276905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:08,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947512971] [2022-12-12 00:30:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:08,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:08,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:08,217 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) [2022-12-12 00:30:08,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 00:30:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:08,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 00:30:08,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:08,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:08,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947512971] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:08,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:08,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-12 00:30:08,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210928907] [2022-12-12 00:30:08,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:08,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 00:30:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 00:30:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 00:30:08,525 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 00:30:08,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 470 transitions, 6389 flow. Second operand has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:08,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:08,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 00:30:08,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:09,607 INFO L130 PetriNetUnfolder]: 3193/8199 cut-off events. [2022-12-12 00:30:09,607 INFO L131 PetriNetUnfolder]: For 59228/60546 co-relation queries the response was YES. [2022-12-12 00:30:09,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40059 conditions, 8199 events. 3193/8199 cut-off events. For 59228/60546 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 77780 event pairs, 76 based on Foata normal form. 47/7496 useless extension candidates. Maximal degree in co-relation 37498. Up to 4200 conditions per place. [2022-12-12 00:30:09,660 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 355 selfloop transitions, 177 changer transitions 9/762 dead transitions. [2022-12-12 00:30:09,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 762 transitions, 12962 flow [2022-12-12 00:30:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 00:30:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 00:30:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 776 transitions. [2022-12-12 00:30:09,662 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-12-12 00:30:09,662 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 75 predicate places. [2022-12-12 00:30:09,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 762 transitions, 12962 flow [2022-12-12 00:30:09,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 753 transitions, 12776 flow [2022-12-12 00:30:09,703 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 753 transitions, 12776 flow [2022-12-12 00:30:09,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:09,703 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:09,703 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:09,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 00:30:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-12 00:30:09,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1527404724, now seen corresponding path program 2 times [2022-12-12 00:30:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:09,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631175392] [2022-12-12 00:30:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:09,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:10,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:10,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631175392] [2022-12-12 00:30:10,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631175392] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:10,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650792037] [2022-12-12 00:30:10,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:30:10,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:10,270 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) [2022-12-12 00:30:10,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 00:30:10,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:30:10,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:30:10,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 00:30:10,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:10,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:10,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650792037] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:10,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:10,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-12-12 00:30:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246930981] [2022-12-12 00:30:10,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:10,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 00:30:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 00:30:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-12 00:30:10,686 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 00:30:10,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 753 transitions, 12776 flow. Second operand has 15 states, 15 states have (on average 63.2) internal successors, (948), 15 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:10,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:10,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 00:30:10,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:13,053 INFO L130 PetriNetUnfolder]: 5118/12990 cut-off events. [2022-12-12 00:30:13,054 INFO L131 PetriNetUnfolder]: For 110381/111681 co-relation queries the response was YES. [2022-12-12 00:30:13,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70345 conditions, 12990 events. 5118/12990 cut-off events. For 110381/111681 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 130493 event pairs, 134 based on Foata normal form. 26/11901 useless extension candidates. Maximal degree in co-relation 65585. Up to 6615 conditions per place. [2022-12-12 00:30:13,164 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 1016 selfloop transitions, 342 changer transitions 6/1443 dead transitions. [2022-12-12 00:30:13,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1443 transitions, 25959 flow [2022-12-12 00:30:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 00:30:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 00:30:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 773 transitions. [2022-12-12 00:30:13,167 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7244611059044048 [2022-12-12 00:30:13,167 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 83 predicate places. [2022-12-12 00:30:13,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 1443 transitions, 25959 flow [2022-12-12 00:30:13,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 1437 transitions, 25841 flow [2022-12-12 00:30:13,248 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 1437 transitions, 25841 flow [2022-12-12 00:30:13,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.2) internal successors, (948), 15 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:13,248 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:13,249 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:13,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 00:30:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:13,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:13,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1467070492, now seen corresponding path program 3 times [2022-12-12 00:30:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:13,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359308953] [2022-12-12 00:30:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:13,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359308953] [2022-12-12 00:30:13,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359308953] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:13,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672416048] [2022-12-12 00:30:13,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:30:13,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:13,729 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) [2022-12-12 00:30:13,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 00:30:13,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 00:30:13,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:30:13,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 00:30:13,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:13,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:14,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672416048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:14,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:14,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 00:30:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11418243] [2022-12-12 00:30:14,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:14,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 00:30:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 00:30:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 00:30:14,072 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 00:30:14,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 1437 transitions, 25841 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:14,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:14,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 00:30:14,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:17,673 INFO L130 PetriNetUnfolder]: 6705/17366 cut-off events. [2022-12-12 00:30:17,673 INFO L131 PetriNetUnfolder]: For 175570/177260 co-relation queries the response was YES. [2022-12-12 00:30:17,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97167 conditions, 17366 events. 6705/17366 cut-off events. For 175570/177260 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 185393 event pairs, 196 based on Foata normal form. 30/15918 useless extension candidates. Maximal degree in co-relation 78942. Up to 8733 conditions per place. [2022-12-12 00:30:17,834 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 899 selfloop transitions, 214 changer transitions 13/1737 dead transitions. [2022-12-12 00:30:17,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1737 transitions, 34841 flow [2022-12-12 00:30:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 00:30:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 00:30:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 857 transitions. [2022-12-12 00:30:17,837 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8031865042174321 [2022-12-12 00:30:17,837 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 91 predicate places. [2022-12-12 00:30:17,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 1737 transitions, 34841 flow [2022-12-12 00:30:17,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 1724 transitions, 34511 flow [2022-12-12 00:30:17,937 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 1724 transitions, 34511 flow [2022-12-12 00:30:17,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:17,938 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:17,938 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:17,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-12 00:30:18,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:18,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash -218944456, now seen corresponding path program 1 times [2022-12-12 00:30:18,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:18,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256693782] [2022-12-12 00:30:18,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:18,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 00:30:18,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256693782] [2022-12-12 00:30:18,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256693782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:18,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:18,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 00:30:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411353672] [2022-12-12 00:30:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:18,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 00:30:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 00:30:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 00:30:18,246 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 00:30:18,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 1724 transitions, 34511 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:18,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:18,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 00:30:18,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:21,790 INFO L130 PetriNetUnfolder]: 5846/15172 cut-off events. [2022-12-12 00:30:21,790 INFO L131 PetriNetUnfolder]: For 178321/180439 co-relation queries the response was YES. [2022-12-12 00:30:21,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89154 conditions, 15172 events. 5846/15172 cut-off events. For 178321/180439 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 158251 event pairs, 114 based on Foata normal form. 128/14143 useless extension candidates. Maximal degree in co-relation 71403. Up to 7810 conditions per place. [2022-12-12 00:30:21,876 INFO L137 encePairwiseOnDemand]: 93/97 looper letters, 1090 selfloop transitions, 7 changer transitions 0/1757 dead transitions. [2022-12-12 00:30:21,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1757 transitions, 37657 flow [2022-12-12 00:30:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 00:30:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 00:30:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2022-12-12 00:30:21,878 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8943298969072165 [2022-12-12 00:30:21,878 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 92 predicate places. [2022-12-12 00:30:21,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 1757 transitions, 37657 flow [2022-12-12 00:30:21,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 1757 transitions, 37657 flow [2022-12-12 00:30:21,951 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 1757 transitions, 37657 flow [2022-12-12 00:30:21,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:21,951 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:21,952 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:21,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 00:30:21,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2087100940, now seen corresponding path program 4 times [2022-12-12 00:30:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:21,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293370347] [2022-12-12 00:30:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:22,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:22,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293370347] [2022-12-12 00:30:22,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293370347] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:22,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595434102] [2022-12-12 00:30:22,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 00:30:22,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:22,158 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) [2022-12-12 00:30:22,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 00:30:22,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 00:30:22,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:30:22,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 00:30:22,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:22,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:22,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595434102] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:22,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:22,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 00:30:22,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014066439] [2022-12-12 00:30:22,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:22,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 00:30:22,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 00:30:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 00:30:22,443 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 00:30:22,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 1757 transitions, 37657 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:22,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:22,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 00:30:22,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:26,519 INFO L130 PetriNetUnfolder]: 6812/17843 cut-off events. [2022-12-12 00:30:26,519 INFO L131 PetriNetUnfolder]: For 239761/241913 co-relation queries the response was YES. [2022-12-12 00:30:26,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107989 conditions, 17843 events. 6812/17843 cut-off events. For 239761/241913 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 192686 event pairs, 154 based on Foata normal form. 35/16487 useless extension candidates. Maximal degree in co-relation 85938. Up to 9121 conditions per place. [2022-12-12 00:30:26,639 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 1181 selfloop transitions, 207 changer transitions 5/1997 dead transitions. [2022-12-12 00:30:26,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1997 transitions, 46669 flow [2022-12-12 00:30:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 00:30:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 00:30:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 854 transitions. [2022-12-12 00:30:26,641 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8003748828491096 [2022-12-12 00:30:26,641 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 102 predicate places. [2022-12-12 00:30:26,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 1997 transitions, 46669 flow [2022-12-12 00:30:26,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 1992 transitions, 46541 flow [2022-12-12 00:30:26,734 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 1992 transitions, 46541 flow [2022-12-12 00:30:26,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:26,735 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:26,735 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:26,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 00:30:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 00:30:26,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash -840933816, now seen corresponding path program 5 times [2022-12-12 00:30:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949260692] [2022-12-12 00:30:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:26,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:30:27,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:27,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949260692] [2022-12-12 00:30:27,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949260692] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:27,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501450092] [2022-12-12 00:30:27,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 00:30:27,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:27,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:27,191 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) [2022-12-12 00:30:27,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 00:30:27,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 00:30:27,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:30:27,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 00:30:27,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:30:27,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:30:27,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501450092] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:27,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:27,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-12 00:30:27,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710714674] [2022-12-12 00:30:27,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:27,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 00:30:27,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:27,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 00:30:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 00:30:27,509 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 00:30:27,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 1992 transitions, 46541 flow. Second operand has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:27,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:27,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 00:30:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:32,297 INFO L130 PetriNetUnfolder]: 7080/18526 cut-off events. [2022-12-12 00:30:32,297 INFO L131 PetriNetUnfolder]: For 287614/289880 co-relation queries the response was YES. [2022-12-12 00:30:32,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115879 conditions, 18526 events. 7080/18526 cut-off events. For 287614/289880 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 201752 event pairs, 160 based on Foata normal form. 41/17121 useless extension candidates. Maximal degree in co-relation 109743. Up to 9490 conditions per place. [2022-12-12 00:30:32,420 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 1366 selfloop transitions, 91 changer transitions 5/2066 dead transitions. [2022-12-12 00:30:32,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 2066 transitions, 51399 flow [2022-12-12 00:30:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 00:30:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 00:30:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 773 transitions. [2022-12-12 00:30:32,421 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7969072164948454 [2022-12-12 00:30:32,422 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 109 predicate places. [2022-12-12 00:30:32,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 2066 transitions, 51399 flow [2022-12-12 00:30:32,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 2061 transitions, 51261 flow [2022-12-12 00:30:32,510 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 2061 transitions, 51261 flow [2022-12-12 00:30:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:32,511 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:32,511 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:32,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 00:30:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:32,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1202390538, now seen corresponding path program 6 times [2022-12-12 00:30:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:32,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48370145] [2022-12-12 00:30:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:32,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:32,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:32,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48370145] [2022-12-12 00:30:32,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48370145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:32,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667125817] [2022-12-12 00:30:32,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 00:30:32,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:32,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:32,899 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) [2022-12-12 00:30:32,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 00:30:32,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 00:30:32,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:30:32,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 00:30:32,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:33,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:30:33,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667125817] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:33,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:33,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 00:30:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507852052] [2022-12-12 00:30:33,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:33,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 00:30:33,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 00:30:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 00:30:33,194 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 00:30:33,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 2061 transitions, 51261 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:33,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:33,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 00:30:33,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:39,100 INFO L130 PetriNetUnfolder]: 8873/23335 cut-off events. [2022-12-12 00:30:39,100 INFO L131 PetriNetUnfolder]: For 417141/419958 co-relation queries the response was YES. [2022-12-12 00:30:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150829 conditions, 23335 events. 8873/23335 cut-off events. For 417141/419958 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 262583 event pairs, 286 based on Foata normal form. 67/21506 useless extension candidates. Maximal degree in co-relation 142204. Up to 11841 conditions per place. [2022-12-12 00:30:39,248 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 1308 selfloop transitions, 502 changer transitions 9/2423 dead transitions. [2022-12-12 00:30:39,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2423 transitions, 65892 flow [2022-12-12 00:30:39,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 00:30:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 00:30:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 859 transitions. [2022-12-12 00:30:39,250 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8050609184629803 [2022-12-12 00:30:39,250 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 117 predicate places. [2022-12-12 00:30:39,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 2423 transitions, 65892 flow [2022-12-12 00:30:39,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 2414 transitions, 65604 flow [2022-12-12 00:30:39,369 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 2414 transitions, 65604 flow [2022-12-12 00:30:39,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:39,369 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:39,370 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:39,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 00:30:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:39,574 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -212098772, now seen corresponding path program 1 times [2022-12-12 00:30:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:39,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234775370] [2022-12-12 00:30:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 00:30:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234775370] [2022-12-12 00:30:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234775370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:30:39,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:30:39,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 00:30:39,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720223240] [2022-12-12 00:30:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:30:39,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 00:30:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 00:30:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 00:30:39,654 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 00:30:39,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 2414 transitions, 65604 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:39,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:39,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 00:30:39,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:42,667 INFO L130 PetriNetUnfolder]: 4152/10977 cut-off events. [2022-12-12 00:30:42,667 INFO L131 PetriNetUnfolder]: For 212803/215252 co-relation queries the response was YES. [2022-12-12 00:30:42,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72100 conditions, 10977 events. 4152/10977 cut-off events. For 212803/215252 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 109824 event pairs, 105 based on Foata normal form. 166/10348 useless extension candidates. Maximal degree in co-relation 58451. Up to 5538 conditions per place. [2022-12-12 00:30:42,737 INFO L137 encePairwiseOnDemand]: 93/97 looper letters, 820 selfloop transitions, 7 changer transitions 0/1515 dead transitions. [2022-12-12 00:30:42,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1515 transitions, 38101 flow [2022-12-12 00:30:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 00:30:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 00:30:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2022-12-12 00:30:42,738 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8891752577319587 [2022-12-12 00:30:42,739 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 118 predicate places. [2022-12-12 00:30:42,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 1515 transitions, 38101 flow [2022-12-12 00:30:42,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 1515 transitions, 38101 flow [2022-12-12 00:30:42,793 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 1515 transitions, 38101 flow [2022-12-12 00:30:42,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:42,794 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:30:42,794 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:30:42,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 00:30:42,794 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:30:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:30:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1039401345, now seen corresponding path program 7 times [2022-12-12 00:30:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:30:42,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908511237] [2022-12-12 00:30:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:30:42,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:30:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:30:43,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:30:43,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908511237] [2022-12-12 00:30:43,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908511237] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:30:43,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795011906] [2022-12-12 00:30:43,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 00:30:43,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:30:43,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:30:43,184 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) [2022-12-12 00:30:43,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 00:30:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:30:43,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 00:30:43,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:30:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 00:30:43,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:30:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 00:30:44,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795011906] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:30:44,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:30:44,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-12-12 00:30:44,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384515292] [2022-12-12 00:30:44,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:30:44,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-12 00:30:44,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:30:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-12 00:30:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2022-12-12 00:30:44,548 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 00:30:44,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 1515 transitions, 38101 flow. Second operand has 36 states, 36 states have (on average 62.638888888888886) internal successors, (2255), 36 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:30:44,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:30:44,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 00:30:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:30:58,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 00:31:09,457 INFO L130 PetriNetUnfolder]: 11699/31591 cut-off events. [2022-12-12 00:31:09,458 INFO L131 PetriNetUnfolder]: For 700782/707343 co-relation queries the response was YES. [2022-12-12 00:31:09,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228024 conditions, 31591 events. 11699/31591 cut-off events. For 700782/707343 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 359876 event pairs, 320 based on Foata normal form. 159/29716 useless extension candidates. Maximal degree in co-relation 176540. Up to 16198 conditions per place. [2022-12-12 00:31:09,685 INFO L137 encePairwiseOnDemand]: 78/97 looper letters, 3782 selfloop transitions, 941 changer transitions 4/4833 dead transitions. [2022-12-12 00:31:09,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 4833 transitions, 130667 flow [2022-12-12 00:31:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-12-12 00:31:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2022-12-12 00:31:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 8801 transitions. [2022-12-12 00:31:09,712 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6671467556094602 [2022-12-12 00:31:09,712 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 253 predicate places. [2022-12-12 00:31:09,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 4833 transitions, 130667 flow [2022-12-12 00:31:09,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 4829 transitions, 130603 flow [2022-12-12 00:31:09,902 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 4829 transitions, 130603 flow [2022-12-12 00:31:09,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 62.638888888888886) internal successors, (2255), 36 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:31:09,903 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:31:09,903 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:31:09,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 00:31:10,107 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,SelfDestructingSolverStorable16 [2022-12-12 00:31:10,107 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:31:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:31:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1102082548, now seen corresponding path program 8 times [2022-12-12 00:31:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:31:10,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492773959] [2022-12-12 00:31:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:31:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:31:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:31:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:31:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:31:10,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492773959] [2022-12-12 00:31:10,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492773959] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:31:10,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40056965] [2022-12-12 00:31:10,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:31:10,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:31:10,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:31:10,516 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) [2022-12-12 00:31:10,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 00:31:10,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:31:10,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:31:10,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 00:31:10,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:31:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 00:31:11,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:31:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 00:31:11,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40056965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:31:11,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:31:11,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-12-12 00:31:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046768849] [2022-12-12 00:31:11,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:31:11,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-12 00:31:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:31:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-12 00:31:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1151, Unknown=0, NotChecked=0, Total=1260 [2022-12-12 00:31:11,848 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 00:31:11,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 4829 transitions, 130603 flow. Second operand has 36 states, 36 states have (on average 62.666666666666664) internal successors, (2256), 36 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:31:11,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:31:11,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 00:31:11,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:52,270 INFO L130 PetriNetUnfolder]: 28116/72936 cut-off events. [2022-12-12 00:32:52,270 INFO L131 PetriNetUnfolder]: For 1713746/1726865 co-relation queries the response was YES. [2022-12-12 00:32:52,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576676 conditions, 72936 events. 28116/72936 cut-off events. For 1713746/1726865 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 895312 event pairs, 759 based on Foata normal form. 344/68741 useless extension candidates. Maximal degree in co-relation 452330. Up to 38954 conditions per place. [2022-12-12 00:32:53,058 INFO L137 encePairwiseOnDemand]: 80/97 looper letters, 10006 selfloop transitions, 2506 changer transitions 506/13124 dead transitions. [2022-12-12 00:32:53,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 13124 transitions, 380541 flow [2022-12-12 00:32:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-12-12 00:32:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2022-12-12 00:32:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 9773 transitions. [2022-12-12 00:32:53,082 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6716838487972508 [2022-12-12 00:32:53,082 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 402 predicate places. [2022-12-12 00:32:53,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 488 places, 13124 transitions, 380541 flow [2022-12-12 00:32:53,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 12618 transitions, 362116 flow [2022-12-12 00:32:53,586 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 12618 transitions, 362116 flow [2022-12-12 00:32:53,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 62.666666666666664) internal successors, (2256), 36 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:32:53,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:53,587 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:53,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 00:32:53,791 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,SelfDestructingSolverStorable17 [2022-12-12 00:32:53,792 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:32:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash 899946443, now seen corresponding path program 9 times [2022-12-12 00:32:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:53,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139889019] [2022-12-12 00:32:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:53,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 67 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 00:32:54,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:54,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139889019] [2022-12-12 00:32:54,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139889019] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:32:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534926040] [2022-12-12 00:32:54,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:32:54,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:54,357 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) [2022-12-12 00:32:54,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 00:32:54,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-12 00:32:54,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:32:54,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 00:32:54,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:32:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 81 proven. 50 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-12 00:32:55,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:36:09,083 WARN L233 SmtUtils]: Spent 3.17m on a formula simplification. DAG size of input: 11704 DAG size of output: 11642 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)