/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:01:41,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:01:41,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:01:41,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:01:41,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:01:41,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:01:41,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:01:41,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:01:41,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:01:41,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:01:41,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:01:41,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:01:41,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:01:41,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:01:41,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:01:41,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:01:41,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:01:41,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:01:41,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:01:41,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:01:41,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:01:41,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:01:41,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:01:41,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:01:41,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 02:01:41,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:01:41,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:01:41,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:01:41,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:01:41,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:01:41,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:01:41,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:01:41,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:01:41,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:01:41,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:01:41,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:01:41,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:01:41,888 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:01:41,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:01:41,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:01:41,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:01:41,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:01:41,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:01:41,889 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:01:41,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:01:41,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:01:41,890 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:01:41,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:01:41,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:01:41,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:01:41,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:01:41,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:01:41,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:01:41,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:01:41,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:01:41,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:01:41,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:01:41,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:01:41,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:01:41,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:01:41,892 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:01:42,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:01:42,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:01:42,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:01:42,093 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:01:42,094 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:01:42,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-01-28 02:01:43,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:01:43,338 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:01:43,338 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-01-28 02:01:43,350 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecce6e33/f2ccdbf387ce4b71ba8d4facb9d2d7cb/FLAGaf3058ec1 [2023-01-28 02:01:43,359 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecce6e33/f2ccdbf387ce4b71ba8d4facb9d2d7cb [2023-01-28 02:01:43,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:01:43,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:01:43,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:01:43,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:01:43,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:01:43,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a95d5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43, skipping insertion in model container [2023-01-28 02:01:43,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:01:43,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:01:43,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-01-28 02:01:43,682 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,682 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,683 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,683 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:01:43,719 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:01:43,747 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-01-28 02:01:43,753 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,753 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,754 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,755 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:43,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:01:43,816 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:01:43,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43 WrapperNode [2023-01-28 02:01:43,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:01:43,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:01:43,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:01:43,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:01:43,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,859 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 225 [2023-01-28 02:01:43,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:01:43,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:01:43,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:01:43,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:01:43,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,879 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:01:43,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:01:43,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:01:43,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:01:43,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (1/1) ... [2023-01-28 02:01:43,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:01:43,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:43,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:01:43,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:01:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:01:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 02:01:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 02:01:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 02:01:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 02:01:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:01:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:01:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:01:43,955 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:01:44,113 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:01:44,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:01:44,399 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:01:44,410 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:01:44,410 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-28 02:01:44,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:01:44 BoogieIcfgContainer [2023-01-28 02:01:44,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:01:44,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:01:44,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:01:44,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:01:44,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:01:43" (1/3) ... [2023-01-28 02:01:44,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a85ff54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:01:44, skipping insertion in model container [2023-01-28 02:01:44,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:43" (2/3) ... [2023-01-28 02:01:44,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a85ff54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:01:44, skipping insertion in model container [2023-01-28 02:01:44,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:01:44" (3/3) ... [2023-01-28 02:01:44,417 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-01-28 02:01:44,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:01:44,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:01:44,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:01:44,484 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 02:01:44,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 233 transitions, 474 flow [2023-01-28 02:01:44,594 INFO L130 PetriNetUnfolder]: 28/249 cut-off events. [2023-01-28 02:01:44,594 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-01-28 02:01:44,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 249 events. 28/249 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 387 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-01-28 02:01:44,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 233 transitions, 474 flow [2023-01-28 02:01:44,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 228 transitions, 461 flow [2023-01-28 02:01:44,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:01:44,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 228 transitions, 461 flow [2023-01-28 02:01:44,618 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 228 transitions, 461 flow [2023-01-28 02:01:44,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 228 transitions, 461 flow [2023-01-28 02:01:44,645 INFO L130 PetriNetUnfolder]: 27/244 cut-off events. [2023-01-28 02:01:44,645 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:01:44,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 244 events. 27/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 337 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-01-28 02:01:44,650 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-01-28 02:01:56,639 WARN L222 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 02:02:02,914 WARN L222 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 02:02:13,145 INFO L134 LiptonReduction]: Checked pairs total: 3792 [2023-01-28 02:02:13,145 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-01-28 02:02:13,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:02:13,172 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;@3d8ef37f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:02:13,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:02:13,177 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-01-28 02:02:13,178 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:02:13,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:13,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-28 02:02:13,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:13,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash -620848509, now seen corresponding path program 1 times [2023-01-28 02:02:13,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811624050] [2023-01-28 02:02:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:02:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:13,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:13,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811624050] [2023-01-28 02:02:13,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811624050] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:02:13,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:02:13,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:02:13,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002318892] [2023-01-28 02:02:13,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:02:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:02:13,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:02:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:02:13,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 470 [2023-01-28 02:02:13,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:13,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:13,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 470 [2023-01-28 02:02:13,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:13,770 INFO L130 PetriNetUnfolder]: 48/113 cut-off events. [2023-01-28 02:02:13,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:02:13,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 48/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 292 event pairs, 33 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-01-28 02:02:13,774 INFO L137 encePairwiseOnDemand]: 457/470 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-28 02:02:13,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-01-28 02:02:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:02:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:02:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-01-28 02:02:13,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451063829787234 [2023-01-28 02:02:13,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-01-28 02:02:13,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-01-28 02:02:13,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:13,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-01-28 02:02:13,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:13,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:13,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:13,808 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 636 transitions. [2023-01-28 02:02:13,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-01-28 02:02:13,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:02:13,813 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-01-28 02:02:13,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, 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=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-28 02:02:13,825 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-01-28 02:02:13,825 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-01-28 02:02:13,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:13,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:13,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:02:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:02:13,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:13,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash 491945045, now seen corresponding path program 1 times [2023-01-28 02:02:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:13,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345242085] [2023-01-28 02:02:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:02:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345242085] [2023-01-28 02:02:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345242085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:02:13,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:02:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:02:13,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729613018] [2023-01-28 02:02:13,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:02:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:02:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:02:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:02:13,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-28 02:02:13,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:13,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:13,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-28 02:02:13,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:14,051 INFO L130 PetriNetUnfolder]: 48/115 cut-off events. [2023-01-28 02:02:14,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:02:14,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 115 events. 48/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 33 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 212. Up to 100 conditions per place. [2023-01-28 02:02:14,052 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-01-28 02:02:14,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-01-28 02:02:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:02:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:02:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-01-28 02:02:14,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44893617021276594 [2023-01-28 02:02:14,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-01-28 02:02:14,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-01-28 02:02:14,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:14,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-01-28 02:02:14,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,059 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 633 transitions. [2023-01-28 02:02:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-01-28 02:02:14,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:14,060 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-01-28 02:02:14,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-01-28 02:02:14,061 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-01-28 02:02:14,061 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-01-28 02:02:14,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:14,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:02:14,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:02:14,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:14,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 119254294, now seen corresponding path program 1 times [2023-01-28 02:02:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398405656] [2023-01-28 02:02:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:14,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:14,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642608744] [2023-01-28 02:02:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:14,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:14,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:02:14,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:02:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:02:14,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 02:02:14,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:14,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398405656] [2023-01-28 02:02:14,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642608744] [2023-01-28 02:02:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642608744] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:14,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-28 02:02:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030841886] [2023-01-28 02:02:14,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:14,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:02:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:02:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:02:14,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-28 02:02:14,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:14,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-28 02:02:14,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:14,545 INFO L130 PetriNetUnfolder]: 48/121 cut-off events. [2023-01-28 02:02:14,545 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 02:02:14,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 121 events. 48/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 297 event pairs, 33 based on Foata normal form. 6/102 useless extension candidates. Maximal degree in co-relation 219. Up to 100 conditions per place. [2023-01-28 02:02:14,546 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-01-28 02:02:14,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-01-28 02:02:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:02:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:02:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1247 transitions. [2023-01-28 02:02:14,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421985815602837 [2023-01-28 02:02:14,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1247 transitions. [2023-01-28 02:02:14,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1247 transitions. [2023-01-28 02:02:14,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:14,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1247 transitions. [2023-01-28 02:02:14,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.83333333333334) internal successors, (1247), 6 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,556 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 1247 transitions. [2023-01-28 02:02:14,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-01-28 02:02:14,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:14,562 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-01-28 02:02:14,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-28 02:02:14,564 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-01-28 02:02:14,564 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-01-28 02:02:14,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:14,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:14,565 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:02:14,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:02:14,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:14,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:14,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash -562486123, now seen corresponding path program 2 times [2023-01-28 02:02:14,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861021781] [2023-01-28 02:02:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:14,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867194034] [2023-01-28 02:02:14,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:02:14,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:14,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:14,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:02:14,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:02:15,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:02:15,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:02:15,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 02:02:15,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:15,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861021781] [2023-01-28 02:02:15,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867194034] [2023-01-28 02:02:15,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867194034] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:15,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:15,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-28 02:02:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373662578] [2023-01-28 02:02:15,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:15,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:02:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:02:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:02:15,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-28 02:02:15,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 204.41666666666666) internal successors, (2453), 12 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:15,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:15,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-28 02:02:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:15,588 INFO L130 PetriNetUnfolder]: 48/133 cut-off events. [2023-01-28 02:02:15,588 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-28 02:02:15,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 133 events. 48/133 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 347 event pairs, 33 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 215. Up to 100 conditions per place. [2023-01-28 02:02:15,589 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-01-28 02:02:15,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-01-28 02:02:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:02:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:02:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2474 transitions. [2023-01-28 02:02:15,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43865248226950354 [2023-01-28 02:02:15,594 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2474 transitions. [2023-01-28 02:02:15,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2474 transitions. [2023-01-28 02:02:15,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:15,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2474 transitions. [2023-01-28 02:02:15,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 206.16666666666666) internal successors, (2474), 12 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:15,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 470.0) internal successors, (6110), 13 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:15,606 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 470.0) internal successors, (6110), 13 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:15,607 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 2474 transitions. [2023-01-28 02:02:15,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-01-28 02:02:15,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:15,608 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-01-28 02:02:15,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-01-28 02:02:15,609 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-01-28 02:02:15,609 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-01-28 02:02:15,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 204.41666666666666) internal successors, (2453), 12 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:15,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:15,610 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:02:15,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:02:15,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 02:02:15,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:15,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2052217611, now seen corresponding path program 3 times [2023-01-28 02:02:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:15,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716371383] [2023-01-28 02:02:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:15,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458309810] [2023-01-28 02:02:15,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:02:15,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:15,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:15,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:02:15,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:02:16,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:02:16,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:02:16,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 02:02:16,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-28 02:02:16,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-28 02:02:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716371383] [2023-01-28 02:02:16,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458309810] [2023-01-28 02:02:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458309810] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:16,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-28 02:02:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701693324] [2023-01-28 02:02:16,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:02:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:02:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:02:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 470 [2023-01-28 02:02:16,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 202.16666666666666) internal successors, (1213), 6 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:16,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:16,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 470 [2023-01-28 02:02:16,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:16,576 INFO L130 PetriNetUnfolder]: 50/160 cut-off events. [2023-01-28 02:02:16,576 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2023-01-28 02:02:16,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 160 events. 50/160 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-01-28 02:02:16,577 INFO L137 encePairwiseOnDemand]: 466/470 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-01-28 02:02:16,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-01-28 02:02:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:02:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:02:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1235 transitions. [2023-01-28 02:02:16,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379432624113475 [2023-01-28 02:02:16,579 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1235 transitions. [2023-01-28 02:02:16,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1235 transitions. [2023-01-28 02:02:16,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:16,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1235 transitions. [2023-01-28 02:02:16,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:16,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:16,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:16,585 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 1235 transitions. [2023-01-28 02:02:16,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-01-28 02:02:16,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-28 02:02:16,588 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-01-28 02:02:16,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-01-28 02:02:16,589 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-01-28 02:02:16,589 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-01-28 02:02:16,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.16666666666666) internal successors, (1213), 6 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:16,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:16,589 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-28 02:02:16,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 02:02:16,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:16,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:16,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1831329205, now seen corresponding path program 4 times [2023-01-28 02:02:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:16,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175128046] [2023-01-28 02:02:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:17,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611936677] [2023-01-28 02:02:17,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:02:17,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:17,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:02:17,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:02:19,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:02:19,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:02:19,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 9543 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 02:02:19,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-28 02:02:19,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-28 02:02:19,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:19,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175128046] [2023-01-28 02:02:19,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:19,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611936677] [2023-01-28 02:02:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611936677] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:19,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:19,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-28 02:02:19,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836910068] [2023-01-28 02:02:19,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:19,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 02:02:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 02:02:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-28 02:02:19,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-28 02:02:19,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 204.33333333333334) internal successors, (4904), 24 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:19,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:19,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-28 02:02:19,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:20,203 INFO L130 PetriNetUnfolder]: 50/208 cut-off events. [2023-01-28 02:02:20,204 INFO L131 PetriNetUnfolder]: For 3489/3489 co-relation queries the response was YES. [2023-01-28 02:02:20,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 208 events. 50/208 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 48/231 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-01-28 02:02:20,205 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-01-28 02:02:20,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-01-28 02:02:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 02:02:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 02:02:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4928 transitions. [2023-01-28 02:02:20,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368794326241135 [2023-01-28 02:02:20,213 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4928 transitions. [2023-01-28 02:02:20,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4928 transitions. [2023-01-28 02:02:20,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:20,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4928 transitions. [2023-01-28 02:02:20,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 205.33333333333334) internal successors, (4928), 24 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:20,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 470.0) internal successors, (11750), 25 states have internal predecessors, (11750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:20,233 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 470.0) internal successors, (11750), 25 states have internal predecessors, (11750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:20,233 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 4928 transitions. [2023-01-28 02:02:20,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-01-28 02:02:20,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:20,237 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-01-28 02:02:20,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-01-28 02:02:20,238 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-01-28 02:02:20,238 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-01-28 02:02:20,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 204.33333333333334) internal successors, (4904), 24 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:20,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:20,249 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-28 02:02:20,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:02:20,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:20,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:20,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -697457845, now seen corresponding path program 5 times [2023-01-28 02:02:20,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:20,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488463716] [2023-01-28 02:02:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:21,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208510064] [2023-01-28 02:02:21,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:02:21,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:21,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:02:21,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 02:16:28,916 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:16:28,933 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:16:29,968 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 [2023-01-28 02:16:30,134 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-28 02:16:30,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-01-28 02:16:30,181 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:16:30,181 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-28 02:16:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:16:30,181 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-01-28 02:16:30,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-28 02:16:30,183 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-01-28 02:16:30,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (1/2) [2023-01-28 02:16:30,187 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:16:30,188 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:16:30,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:16:30 BasicIcfg [2023-01-28 02:16:30,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:16:30,190 INFO L158 Benchmark]: Toolchain (without parser) took 886827.77ms. Allocated memory was 327.2MB in the beginning and 482.3MB in the end (delta: 155.2MB). Free memory was 295.2MB in the beginning and 340.3MB in the end (delta: -45.1MB). Peak memory consumption was 112.0MB. Max. memory is 16.0GB. [2023-01-28 02:16:30,190 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:16:30,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.48ms. Allocated memory is still 327.2MB. Free memory was 294.7MB in the beginning and 263.9MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-28 02:16:30,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.25ms. Allocated memory is still 327.2MB. Free memory was 263.9MB in the beginning and 261.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 02:16:30,190 INFO L158 Benchmark]: Boogie Preprocessor took 23.20ms. Allocated memory is still 327.2MB. Free memory was 260.8MB in the beginning and 258.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:16:30,191 INFO L158 Benchmark]: RCFGBuilder took 528.88ms. Allocated memory is still 327.2MB. Free memory was 258.3MB in the beginning and 295.6MB in the end (delta: -37.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.0GB. [2023-01-28 02:16:30,191 INFO L158 Benchmark]: TraceAbstraction took 885776.30ms. Allocated memory was 327.2MB in the beginning and 482.3MB in the end (delta: 155.2MB). Free memory was 294.7MB in the beginning and 340.3MB in the end (delta: -45.6MB). Peak memory consumption was 109.3MB. Max. memory is 16.0GB. [2023-01-28 02:16:30,192 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 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 454.48ms. Allocated memory is still 327.2MB. Free memory was 294.7MB in the beginning and 263.9MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.25ms. Allocated memory is still 327.2MB. Free memory was 263.9MB in the beginning and 261.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.20ms. Allocated memory is still 327.2MB. Free memory was 260.8MB in the beginning and 258.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 528.88ms. Allocated memory is still 327.2MB. Free memory was 258.3MB in the beginning and 295.6MB in the end (delta: -37.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.0GB. * TraceAbstraction took 885776.30ms. Allocated memory was 327.2MB in the beginning and 482.3MB in the end (delta: 155.2MB). Free memory was 294.7MB in the beginning and 340.3MB in the end (delta: -45.6MB). Peak memory consumption was 109.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.5s, 206 PlacesBefore, 25 PlacesAfterwards, 228 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 6 FixpointIterations, 109 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 19 ConcurrentYvCompositions, 11 ChoiceCompositions, 237 TotalNumberOfCompositions, 3792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3097, independent: 3030, independent conditional: 0, independent unconditional: 3030, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1960, independent: 1938, independent conditional: 0, independent unconditional: 1938, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3097, independent: 1092, independent conditional: 0, independent unconditional: 1092, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 1960, unknown conditional: 0, unknown unconditional: 1960] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1072]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 279 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 885.7s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 28.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 496 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 496 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=6, InterpolantAutomatonStates: 54, 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: 0.5s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11265 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown