/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:53:33,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:53:33,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:53:33,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:53:33,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:53:33,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:53:33,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:53:33,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:53:33,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:53:33,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:53:33,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:53:33,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:53:33,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:53:33,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:53:33,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:53:33,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:53:33,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:53:33,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:53:33,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:53:33,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:53:33,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:53:33,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:53:33,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:53:33,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:53:33,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 20:53:33,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:53:33,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:53:33,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:53:33,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:53:33,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:53:33,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:53:33,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:53:33,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:53:33,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:53:33,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:53:33,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:53:33,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:53:33,897 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:53:33,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:53:33,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:53:33,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:53:33,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:53:33,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:53:33,899 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:53:33,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:53:33,899 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:53:33,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:53:33,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:53:33,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:53:33,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:53:33,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:53:33,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:53:33,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:53:33,902 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:53:34,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:53:34,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:53:34,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:53:34,109 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:53:34,109 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:53:34,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-01-27 20:53:35,006 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:53:35,196 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:53:35,196 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-01-27 20:53:35,202 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403d4779b/59625aba95334dcf8ef69664d7eebb4c/FLAGa0877eebb [2023-01-27 20:53:35,215 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403d4779b/59625aba95334dcf8ef69664d7eebb4c [2023-01-27 20:53:35,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:53:35,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:53:35,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:53:35,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:53:35,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:53:35,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5551ef65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35, skipping insertion in model container [2023-01-27 20:53:35,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:53:35,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:53:35,350 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-01-27 20:53:35,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:53:35,362 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:53:35,379 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-01-27 20:53:35,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:53:35,390 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:53:35,390 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:53:35,395 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:53:35,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35 WrapperNode [2023-01-27 20:53:35,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:53:35,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:53:35,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:53:35,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:53:35,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,421 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-01-27 20:53:35,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:53:35,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:53:35,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:53:35,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:53:35,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:53:35,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:53:35,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:53:35,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:53:35,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (1/1) ... [2023-01-27 20:53:35,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:53:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:35,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:53:35,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:53:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:53:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:53:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:53:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:53:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:53:35,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:53:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:53:35,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:53:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:53:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:53:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:53:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:53:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:53:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:53:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:53:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:53:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:53:35,505 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:53:35,585 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:53:35,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:53:35,791 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:53:35,854 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:53:35,854 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 20:53:35,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:53:35 BoogieIcfgContainer [2023-01-27 20:53:35,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:53:35,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:53:35,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:53:35,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:53:35,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:53:35" (1/3) ... [2023-01-27 20:53:35,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a47a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:53:35, skipping insertion in model container [2023-01-27 20:53:35,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:53:35" (2/3) ... [2023-01-27 20:53:35,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a47a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:53:35, skipping insertion in model container [2023-01-27 20:53:35,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:53:35" (3/3) ... [2023-01-27 20:53:35,861 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-01-27 20:53:35,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:53:35,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:53:35,872 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:53:35,948 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:53:35,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2023-01-27 20:53:36,021 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2023-01-27 20:53:36,021 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:53:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-01-27 20:53:36,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2023-01-27 20:53:36,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 156 transitions, 330 flow [2023-01-27 20:53:36,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:53:36,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 156 transitions, 330 flow [2023-01-27 20:53:36,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 156 transitions, 330 flow [2023-01-27 20:53:36,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 330 flow [2023-01-27 20:53:36,068 INFO L130 PetriNetUnfolder]: 12/156 cut-off events. [2023-01-27 20:53:36,068 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:53:36,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 12/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-01-27 20:53:36,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-27 20:53:40,699 INFO L134 LiptonReduction]: Checked pairs total: 1738 [2023-01-27 20:53:40,699 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-01-27 20:53:40,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:53:40,725 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;@698bf675, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:53:40,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:53:40,730 INFO L130 PetriNetUnfolder]: 3/23 cut-off events. [2023-01-27 20:53:40,730 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:53:40,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:40,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:40,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:40,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1074919772, now seen corresponding path program 1 times [2023-01-27 20:53:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:40,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069521084] [2023-01-27 20:53:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:41,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:41,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069521084] [2023-01-27 20:53:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069521084] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:41,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:41,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:53:41,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148482505] [2023-01-27 20:53:41,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:53:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:53:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:53:41,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-27 20:53:41,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:41,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-27 20:53:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:41,160 INFO L130 PetriNetUnfolder]: 282/438 cut-off events. [2023-01-27 20:53:41,161 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-27 20:53:41,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 438 events. 282/438 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1311 event pairs, 173 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 800. Up to 356 conditions per place. [2023-01-27 20:53:41,168 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-01-27 20:53:41,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 164 flow [2023-01-27 20:53:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:53:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:53:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-01-27 20:53:41,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471299093655589 [2023-01-27 20:53:41,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-01-27 20:53:41,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-01-27 20:53:41,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:41,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-01-27 20:53:41,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,191 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,192 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 4 states and 592 transitions. [2023-01-27 20:53:41,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 164 flow [2023-01-27 20:53:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:41,195 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 68 flow [2023-01-27 20:53:41,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-01-27 20:53:41,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-01-27 20:53:41,198 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 68 flow [2023-01-27 20:53:41,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:41,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:41,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:53:41,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:41,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:41,200 INFO L85 PathProgramCache]: Analyzing trace with hash 725544040, now seen corresponding path program 1 times [2023-01-27 20:53:41,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:41,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703518432] [2023-01-27 20:53:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:41,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:41,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703518432] [2023-01-27 20:53:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703518432] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:41,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:53:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696636486] [2023-01-27 20:53:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:41,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:53:41,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:53:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:53:41,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-27 20:53:41,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:41,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-27 20:53:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:41,347 INFO L130 PetriNetUnfolder]: 344/532 cut-off events. [2023-01-27 20:53:41,347 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-01-27 20:53:41,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 532 events. 344/532 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1709 event pairs, 221 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 397. Up to 438 conditions per place. [2023-01-27 20:53:41,349 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-01-27 20:53:41,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 178 flow [2023-01-27 20:53:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:53:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:53:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-01-27 20:53:41,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471299093655589 [2023-01-27 20:53:41,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-01-27 20:53:41,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-01-27 20:53:41,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:41,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-01-27 20:53:41,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,356 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 4 states and 592 transitions. [2023-01-27 20:53:41,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 178 flow [2023-01-27 20:53:41,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 168 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:53:41,357 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 76 flow [2023-01-27 20:53:41,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-01-27 20:53:41,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-01-27 20:53:41,358 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 76 flow [2023-01-27 20:53:41,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:41,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:41,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:53:41,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:41,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash -512809655, now seen corresponding path program 1 times [2023-01-27 20:53:41,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:41,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710530570] [2023-01-27 20:53:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:53:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710530570] [2023-01-27 20:53:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710530570] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:41,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:41,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:53:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297778813] [2023-01-27 20:53:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:41,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:53:41,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:53:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:53:41,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-27 20:53:41,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:41,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-27 20:53:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:41,531 INFO L130 PetriNetUnfolder]: 344/533 cut-off events. [2023-01-27 20:53:41,531 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-01-27 20:53:41,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 533 events. 344/533 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1621 event pairs, 277 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 469. Up to 533 conditions per place. [2023-01-27 20:53:41,534 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-01-27 20:53:41,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 132 flow [2023-01-27 20:53:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:53:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:53:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-01-27 20:53:41,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446122860020141 [2023-01-27 20:53:41,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-01-27 20:53:41,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-01-27 20:53:41,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:41,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-01-27 20:53:41,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,538 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 76 flow. Second operand 3 states and 443 transitions. [2023-01-27 20:53:41,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 132 flow [2023-01-27 20:53:41,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:53:41,539 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 82 flow [2023-01-27 20:53:41,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-27 20:53:41,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-01-27 20:53:41,540 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 82 flow [2023-01-27 20:53:41,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:41,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:41,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:53:41,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:41,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash -599166117, now seen corresponding path program 1 times [2023-01-27 20:53:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893541368] [2023-01-27 20:53:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893541368] [2023-01-27 20:53:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893541368] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179908862] [2023-01-27 20:53:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:41,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:53:41,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:53:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:42,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:53:42,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:42,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:53:42,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:42,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 61 [2023-01-27 20:53:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:42,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:42,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:42,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 65 [2023-01-27 20:53:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:42,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179908862] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:53:42,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:53:42,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-27 20:53:42,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178366608] [2023-01-27 20:53:42,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:53:42,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:53:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:53:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:53:42,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 331 [2023-01-27 20:53:42,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 82 flow. Second operand has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:42,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:42,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 331 [2023-01-27 20:53:42,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:43,445 INFO L130 PetriNetUnfolder]: 1268/1991 cut-off events. [2023-01-27 20:53:43,445 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2023-01-27 20:53:43,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1991 events. 1268/1991 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9306 event pairs, 162 based on Foata normal form. 4/1699 useless extension candidates. Maximal degree in co-relation 4940. Up to 506 conditions per place. [2023-01-27 20:53:43,451 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 74 selfloop transitions, 14 changer transitions 124/212 dead transitions. [2023-01-27 20:53:43,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 212 transitions, 1043 flow [2023-01-27 20:53:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:53:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:53:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2613 transitions. [2023-01-27 20:53:43,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41548735888058513 [2023-01-27 20:53:43,456 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2613 transitions. [2023-01-27 20:53:43,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2613 transitions. [2023-01-27 20:53:43,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:43,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2613 transitions. [2023-01-27 20:53:43,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.52631578947367) internal successors, (2613), 19 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,469 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,469 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 82 flow. Second operand 19 states and 2613 transitions. [2023-01-27 20:53:43,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 212 transitions, 1043 flow [2023-01-27 20:53:43,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 212 transitions, 1039 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 20:53:43,478 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 199 flow [2023-01-27 20:53:43,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=199, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-01-27 20:53:43,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2023-01-27 20:53:43,479 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 199 flow [2023-01-27 20:53:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:43,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:43,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:43,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:43,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:43,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1758554723, now seen corresponding path program 2 times [2023-01-27 20:53:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:43,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234567583] [2023-01-27 20:53:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:43,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:44,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234567583] [2023-01-27 20:53:44,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234567583] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:44,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:44,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:53:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658780287] [2023-01-27 20:53:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:44,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:53:44,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:53:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:53:44,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 331 [2023-01-27 20:53:44,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:44,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 331 [2023-01-27 20:53:44,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:44,359 INFO L130 PetriNetUnfolder]: 1073/1714 cut-off events. [2023-01-27 20:53:44,359 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-01-27 20:53:44,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1714 events. 1073/1714 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8071 event pairs, 132 based on Foata normal form. 4/1584 useless extension candidates. Maximal degree in co-relation 6457. Up to 602 conditions per place. [2023-01-27 20:53:44,367 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 46 selfloop transitions, 5 changer transitions 41/92 dead transitions. [2023-01-27 20:53:44,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 633 flow [2023-01-27 20:53:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:53:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:53:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 866 transitions. [2023-01-27 20:53:44,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3737591713422529 [2023-01-27 20:53:44,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 866 transitions. [2023-01-27 20:53:44,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 866 transitions. [2023-01-27 20:53:44,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:44,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 866 transitions. [2023-01-27 20:53:44,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,374 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 199 flow. Second operand 7 states and 866 transitions. [2023-01-27 20:53:44,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 633 flow [2023-01-27 20:53:44,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 589 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-27 20:53:44,388 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 173 flow [2023-01-27 20:53:44,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-01-27 20:53:44,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-01-27 20:53:44,389 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 173 flow [2023-01-27 20:53:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:44,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:44,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:53:44,390 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:44,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash -115692411, now seen corresponding path program 3 times [2023-01-27 20:53:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757034308] [2023-01-27 20:53:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757034308] [2023-01-27 20:53:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757034308] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611863184] [2023-01-27 20:53:44,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:53:44,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:44,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:44,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:53:44,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:53:44,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:53:44,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:44,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 20:53:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:44,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:44,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:53:44,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:53:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:44,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:45,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-01-27 20:53:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611863184] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:53:51,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:53:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 26 [2023-01-27 20:53:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69496237] [2023-01-27 20:53:51,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:53:51,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 20:53:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 20:53:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=601, Unknown=6, NotChecked=0, Total=756 [2023-01-27 20:53:51,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 331 [2023-01-27 20:53:51,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 173 flow. Second operand has 28 states, 28 states have (on average 112.57142857142857) internal successors, (3152), 28 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:51,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:51,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 331 [2023-01-27 20:53:51,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:52,655 INFO L130 PetriNetUnfolder]: 1727/2822 cut-off events. [2023-01-27 20:53:52,655 INFO L131 PetriNetUnfolder]: For 6136/6136 co-relation queries the response was YES. [2023-01-27 20:53:52,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9837 conditions, 2822 events. 1727/2822 cut-off events. For 6136/6136 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15210 event pairs, 111 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 9806. Up to 775 conditions per place. [2023-01-27 20:53:52,668 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 103 selfloop transitions, 26 changer transitions 157/286 dead transitions. [2023-01-27 20:53:52,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 286 transitions, 1863 flow [2023-01-27 20:53:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-27 20:53:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-27 20:53:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3464 transitions. [2023-01-27 20:53:52,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36087092405458904 [2023-01-27 20:53:52,675 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3464 transitions. [2023-01-27 20:53:52,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3464 transitions. [2023-01-27 20:53:52,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:52,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3464 transitions. [2023-01-27 20:53:52,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 119.44827586206897) internal successors, (3464), 29 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:52,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 331.0) internal successors, (9930), 30 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:52,692 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 331.0) internal successors, (9930), 30 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:52,692 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 173 flow. Second operand 29 states and 3464 transitions. [2023-01-27 20:53:52,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 286 transitions, 1863 flow [2023-01-27 20:53:52,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 286 transitions, 1748 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-01-27 20:53:52,700 INFO L231 Difference]: Finished difference. Result has 93 places, 49 transitions, 401 flow [2023-01-27 20:53:52,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=401, PETRI_PLACES=93, PETRI_TRANSITIONS=49} [2023-01-27 20:53:52,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2023-01-27 20:53:52,702 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 49 transitions, 401 flow [2023-01-27 20:53:52,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 112.57142857142857) internal successors, (3152), 28 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:52,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:52,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:52,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:52,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 20:53:52,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:52,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 157009709, now seen corresponding path program 4 times [2023-01-27 20:53:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:52,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917782971] [2023-01-27 20:53:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:53:53,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917782971] [2023-01-27 20:53:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917782971] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739542137] [2023-01-27 20:53:53,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:53:53,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:53,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:53,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:53:53,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:53:53,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:53:53,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:53,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-27 20:53:53,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:53,355 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:53:53,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 90 [2023-01-27 20:53:53,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 20:53:53,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:53:53,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:53:53,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:53:53,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:53:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:53,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:55,802 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_223 (Array Int Int)) (v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (< (select (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1))) is different from false [2023-01-27 20:53:55,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:55,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 41 [2023-01-27 20:53:55,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 423 treesize of output 417 [2023-01-27 20:53:55,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 232 [2023-01-27 20:53:55,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 224 [2023-01-27 20:53:55,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2023-01-27 20:53:55,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 204 [2023-01-27 20:53:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-27 20:53:55,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739542137] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:53:55,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:53:55,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2023-01-27 20:53:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126873976] [2023-01-27 20:53:55,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:53:55,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 20:53:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 20:53:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=410, Unknown=9, NotChecked=42, Total=552 [2023-01-27 20:53:55,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 331 [2023-01-27 20:53:55,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 49 transitions, 401 flow. Second operand has 24 states, 24 states have (on average 106.95833333333333) internal successors, (2567), 24 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:55,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:55,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 331 [2023-01-27 20:53:55,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:56,701 INFO L130 PetriNetUnfolder]: 1469/2486 cut-off events. [2023-01-27 20:53:56,701 INFO L131 PetriNetUnfolder]: For 30865/30865 co-relation queries the response was YES. [2023-01-27 20:53:56,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14203 conditions, 2486 events. 1469/2486 cut-off events. For 30865/30865 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13193 event pairs, 152 based on Foata normal form. 14/2500 useless extension candidates. Maximal degree in co-relation 14167. Up to 771 conditions per place. [2023-01-27 20:53:56,709 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 0 selfloop transitions, 0 changer transitions 176/176 dead transitions. [2023-01-27 20:53:56,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 176 transitions, 1841 flow [2023-01-27 20:53:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 20:53:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 20:53:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1783 transitions. [2023-01-27 20:53:56,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666918429003023 [2023-01-27 20:53:56,713 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1783 transitions. [2023-01-27 20:53:56,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1783 transitions. [2023-01-27 20:53:56,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:56,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1783 transitions. [2023-01-27 20:53:56,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 111.4375) internal successors, (1783), 16 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:56,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:56,722 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:56,722 INFO L175 Difference]: Start difference. First operand has 93 places, 49 transitions, 401 flow. Second operand 16 states and 1783 transitions. [2023-01-27 20:53:56,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 176 transitions, 1841 flow [2023-01-27 20:53:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 176 transitions, 1508 flow, removed 134 selfloop flow, removed 16 redundant places. [2023-01-27 20:53:56,755 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-01-27 20:53:56,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-01-27 20:53:56,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2023-01-27 20:53:56,755 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-01-27 20:53:56,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.95833333333333) internal successors, (2567), 24 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:56,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:53:56,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:53:56,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:53:56,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:53:56,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:56,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:56,965 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-01-27 20:53:56,968 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:53:56,968 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:53:56,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:53:56 BasicIcfg [2023-01-27 20:53:56,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:53:56,970 INFO L158 Benchmark]: Toolchain (without parser) took 21751.34ms. Allocated memory was 358.6MB in the beginning and 675.3MB in the end (delta: 316.7MB). Free memory was 319.0MB in the beginning and 341.3MB in the end (delta: -22.3MB). Peak memory consumption was 297.3MB. Max. memory is 16.0GB. [2023-01-27 20:53:56,970 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 307.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:53:56,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.20ms. Allocated memory is still 358.6MB. Free memory was 318.7MB in the beginning and 306.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:53:56,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.61ms. Allocated memory is still 358.6MB. Free memory was 306.5MB in the beginning and 304.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:53:56,970 INFO L158 Benchmark]: Boogie Preprocessor took 24.31ms. Allocated memory is still 358.6MB. Free memory was 304.8MB in the beginning and 303.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:53:56,970 INFO L158 Benchmark]: RCFGBuilder took 409.23ms. Allocated memory is still 358.6MB. Free memory was 303.2MB in the beginning and 281.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 20:53:56,971 INFO L158 Benchmark]: TraceAbstraction took 21112.34ms. Allocated memory was 358.6MB in the beginning and 675.3MB in the end (delta: 316.7MB). Free memory was 280.1MB in the beginning and 341.3MB in the end (delta: -61.2MB). Peak memory consumption was 257.5MB. Max. memory is 16.0GB. [2023-01-27 20:53:56,971 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 307.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 176.20ms. Allocated memory is still 358.6MB. Free memory was 318.7MB in the beginning and 306.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.61ms. Allocated memory is still 358.6MB. Free memory was 306.5MB in the beginning and 304.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.31ms. Allocated memory is still 358.6MB. Free memory was 304.8MB in the beginning and 303.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 409.23ms. Allocated memory is still 358.6MB. Free memory was 303.2MB in the beginning and 281.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 21112.34ms. Allocated memory was 358.6MB in the beginning and 675.3MB in the end (delta: 316.7MB). Free memory was 280.1MB in the beginning and 341.3MB in the end (delta: -61.2MB). Peak memory consumption was 257.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 154 PlacesBefore, 31 PlacesAfterwards, 156 TransitionsBefore, 24 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 7 FixpointIterations, 94 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 162 TotalNumberOfCompositions, 1738 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1289, independent: 1233, independent conditional: 0, independent unconditional: 1233, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 600, independent: 582, independent conditional: 0, independent unconditional: 582, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1289, independent: 651, independent conditional: 0, independent unconditional: 651, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 600, unknown conditional: 0, unknown unconditional: 600] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 187 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1032 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1032 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 115 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2109 IncrementalHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 0 mSDtfsCounter, 2109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=401occurred in iteration=6, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 293 ConstructedInterpolants, 18 QuantifiedInterpolants, 2442 SizeOfPredicates, 46 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 18/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 20:53:56,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...