/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:19:33,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:19:33,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:19:33,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:19:33,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:19:33,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:19:33,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:19:33,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:19:33,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:19:33,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:19:33,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:19:33,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:19:33,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:19:33,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:19:33,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:19:33,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:19:33,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:19:33,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:19:33,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:19:33,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:19:33,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:19:33,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:19:33,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:19:33,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:19:33,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:19:33,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:19:33,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:19:33,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:19:33,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:19:33,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:19:33,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:19:33,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:19:33,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:19:33,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:19:33,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:19:33,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:19:33,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:19:33,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:19:33,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:19:33,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:19:33,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:19:33,941 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-SemanticLbe.epf [2022-12-05 21:19:33,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:19:33,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:19:33,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:19:33,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:19:33,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:19:33,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:19:33,975 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:19:33,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:19:33,976 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:19:33,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:19:33,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:19:33,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:19:33,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:19:33,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:19:33,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:19:33,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:19:33,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:19:33,978 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:19:33,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:19:33,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:19:33,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:19:33,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:19:33,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:19:33,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:19:33,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:19:33,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:19:33,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:19:33,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:19:33,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:19:33,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:19:33,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:19:34,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:19:34,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:19:34,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:19:34,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:19:34,316 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:19:34,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-12-05 21:19:35,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:19:35,694 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:19:35,694 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-12-05 21:19:35,699 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/747838509/0bc2513b1cc6446c9c1248c3666de084/FLAGa15493e66 [2022-12-05 21:19:35,712 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/747838509/0bc2513b1cc6446c9c1248c3666de084 [2022-12-05 21:19:35,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:19:35,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:19:35,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:19:35,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:19:35,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:19:35,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69105ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35, skipping insertion in model container [2022-12-05 21:19:35,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:19:35,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:19:35,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,890 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-05 21:19:35,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:19:35,900 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:19:35,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:19:35,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:19:35,919 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-05 21:19:35,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:19:35,934 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:19:35,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35 WrapperNode [2022-12-05 21:19:35,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:19:35,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:19:35,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:19:35,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:19:35,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,981 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-12-05 21:19:35,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:19:35,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:19:35,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:19:35,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:19:35,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:35,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:36,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:36,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:36,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:36,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:36,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:19:36,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:19:36,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:19:36,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:19:36,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (1/1) ... [2022-12-05 21:19:36,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:19:36,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:36,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 21:19:36,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 21:19:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:19:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:19:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:19:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:19:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:19:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:19:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:19:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:19:36,104 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:19:36,209 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:19:36,211 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:19:36,412 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:19:36,437 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:19:36,437 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 21:19:36,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:36 BoogieIcfgContainer [2022-12-05 21:19:36,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:19:36,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:19:36,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:19:36,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:19:36,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:19:35" (1/3) ... [2022-12-05 21:19:36,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183c88ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:36, skipping insertion in model container [2022-12-05 21:19:36,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:35" (2/3) ... [2022-12-05 21:19:36,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183c88ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:36, skipping insertion in model container [2022-12-05 21:19:36,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:36" (3/3) ... [2022-12-05 21:19:36,450 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-12-05 21:19:36,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:19:36,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:19:36,466 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:19:36,545 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 21:19:36,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 196 flow [2022-12-05 21:19:36,615 INFO L130 PetriNetUnfolder]: 11/88 cut-off events. [2022-12-05 21:19:36,615 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 21:19:36,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 11/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2022-12-05 21:19:36,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 196 flow [2022-12-05 21:19:36,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 80 transitions, 172 flow [2022-12-05 21:19:36,626 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:19:36,641 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 80 transitions, 172 flow [2022-12-05 21:19:36,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 80 transitions, 172 flow [2022-12-05 21:19:36,670 INFO L130 PetriNetUnfolder]: 11/80 cut-off events. [2022-12-05 21:19:36,670 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 21:19:36,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 11/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2022-12-05 21:19:36,673 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 80 transitions, 172 flow [2022-12-05 21:19:36,674 INFO L188 LiptonReduction]: Number of co-enabled transitions 1088 [2022-12-05 21:19:39,775 INFO L203 LiptonReduction]: Total number of compositions: 65 [2022-12-05 21:19:39,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:19:39,801 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;@206d5eaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:19:39,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 21:19:39,806 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-05 21:19:39,806 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 21:19:39,806 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:39,807 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:39,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1161558226, now seen corresponding path program 1 times [2022-12-05 21:19:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:39,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910820985] [2022-12-05 21:19:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910820985] [2022-12-05 21:19:40,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910820985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:40,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:40,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:19:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450499885] [2022-12-05 21:19:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:40,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:19:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:19:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:19:40,123 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:40,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:40,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:40,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:40,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:40,186 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2022-12-05 21:19:40,187 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-05 21:19:40,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2022-12-05 21:19:40,189 INFO L137 encePairwiseOnDemand]: 10/13 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-12-05 21:19:40,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2022-12-05 21:19:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:19:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:19:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-12-05 21:19:40,199 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2022-12-05 21:19:40,201 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 20 transitions. [2022-12-05 21:19:40,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2022-12-05 21:19:40,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 21:19:40,206 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2022-12-05 21:19:40,208 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2022-12-05 21:19:40,212 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2022-12-05 21:19:40,213 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2022-12-05 21:19:40,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:40,213 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:40,213 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:40,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:19:40,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -824867760, now seen corresponding path program 1 times [2022-12-05 21:19:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:40,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741566516] [2022-12-05 21:19:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:19:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741566516] [2022-12-05 21:19:40,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741566516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:40,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:40,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:19:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945872733] [2022-12-05 21:19:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:19:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:19:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:19:40,344 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:40,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:40,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:40,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:40,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:40,377 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-12-05 21:19:40,377 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-05 21:19:40,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 112. Up to 49 conditions per place. [2022-12-05 21:19:40,378 INFO L137 encePairwiseOnDemand]: 10/13 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-12-05 21:19:40,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2022-12-05 21:19:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:19:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:19:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-12-05 21:19:40,379 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2022-12-05 21:19:40,379 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 20 transitions. [2022-12-05 21:19:40,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2022-12-05 21:19:40,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:19:40,380 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2022-12-05 21:19:40,380 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2022-12-05 21:19:40,381 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-12-05 21:19:40,381 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2022-12-05 21:19:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:40,381 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:40,382 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:40,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:19:40,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash 596881523, now seen corresponding path program 1 times [2022-12-05 21:19:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:40,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263383995] [2022-12-05 21:19:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:40,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:19:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263383995] [2022-12-05 21:19:40,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263383995] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:40,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220703528] [2022-12-05 21:19:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:40,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:40,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 21:19:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:40,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:19:40,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:40,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:19:41,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220703528] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:41,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:41,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 8 [2022-12-05 21:19:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953222433] [2022-12-05 21:19:41,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 21:19:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 21:19:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:19:41,157 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:41,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:41,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:41,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:41,317 INFO L130 PetriNetUnfolder]: 65/116 cut-off events. [2022-12-05 21:19:41,317 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-05 21:19:41,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 65/116 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 100. Up to 41 conditions per place. [2022-12-05 21:19:41,319 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 40 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2022-12-05 21:19:41,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 58 transitions, 305 flow [2022-12-05 21:19:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:19:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:19:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 65 transitions. [2022-12-05 21:19:41,321 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2022-12-05 21:19:41,321 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 13 states and 65 transitions. [2022-12-05 21:19:41,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 58 transitions, 305 flow [2022-12-05 21:19:41,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:19:41,323 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 184 flow [2022-12-05 21:19:41,323 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=184, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2022-12-05 21:19:41,324 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 18 predicate places. [2022-12-05 21:19:41,324 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 184 flow [2022-12-05 21:19:41,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:41,324 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:41,324 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:41,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 21:19:41,530 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 [2022-12-05 21:19:41,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash -817445360, now seen corresponding path program 2 times [2022-12-05 21:19:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:41,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900277212] [2022-12-05 21:19:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900277212] [2022-12-05 21:19:42,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900277212] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885512324] [2022-12-05 21:19:42,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:19:42,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:42,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:42,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:42,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 21:19:42,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:19:42,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:19:42,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-05 21:19:42,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:42,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:43,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885512324] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:43,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:43,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2022-12-05 21:19:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339957774] [2022-12-05 21:19:43,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 21:19:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 21:19:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-05 21:19:43,514 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:43,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 184 flow. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:43,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:43,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:43,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:44,194 INFO L130 PetriNetUnfolder]: 175/289 cut-off events. [2022-12-05 21:19:44,194 INFO L131 PetriNetUnfolder]: For 618/618 co-relation queries the response was YES. [2022-12-05 21:19:44,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 289 events. 175/289 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 901 event pairs, 0 based on Foata normal form. 1/262 useless extension candidates. Maximal degree in co-relation 749. Up to 125 conditions per place. [2022-12-05 21:19:44,199 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 59 selfloop transitions, 54 changer transitions 4/117 dead transitions. [2022-12-05 21:19:44,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 117 transitions, 960 flow [2022-12-05 21:19:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 21:19:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 21:19:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 100 transitions. [2022-12-05 21:19:44,201 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2022-12-05 21:19:44,201 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 184 flow. Second operand 18 states and 100 transitions. [2022-12-05 21:19:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 117 transitions, 960 flow [2022-12-05 21:19:44,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 117 transitions, 881 flow, removed 33 selfloop flow, removed 2 redundant places. [2022-12-05 21:19:44,208 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 671 flow [2022-12-05 21:19:44,208 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=671, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2022-12-05 21:19:44,209 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2022-12-05 21:19:44,209 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 671 flow [2022-12-05 21:19:44,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:44,209 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:44,210 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:44,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 21:19:44,415 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 [2022-12-05 21:19:44,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1577726672, now seen corresponding path program 3 times [2022-12-05 21:19:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:44,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143225104] [2022-12-05 21:19:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:45,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143225104] [2022-12-05 21:19:45,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143225104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:45,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691667360] [2022-12-05 21:19:45,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:19:45,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:45,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:45,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:45,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 21:19:45,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-05 21:19:45,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:19:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-05 21:19:45,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:45,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:45,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691667360] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:45,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:45,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-12-05 21:19:45,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134656915] [2022-12-05 21:19:45,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:45,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 21:19:45,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 21:19:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-12-05 21:19:45,941 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:45,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 671 flow. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:45,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:45,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:45,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:47,258 INFO L130 PetriNetUnfolder]: 351/568 cut-off events. [2022-12-05 21:19:47,259 INFO L131 PetriNetUnfolder]: For 3520/3520 co-relation queries the response was YES. [2022-12-05 21:19:47,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 568 events. 351/568 cut-off events. For 3520/3520 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2162 event pairs, 5 based on Foata normal form. 6/542 useless extension candidates. Maximal degree in co-relation 3027. Up to 243 conditions per place. [2022-12-05 21:19:47,265 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 69 selfloop transitions, 132 changer transitions 21/222 dead transitions. [2022-12-05 21:19:47,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 222 transitions, 2473 flow [2022-12-05 21:19:47,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-05 21:19:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-05 21:19:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 141 transitions. [2022-12-05 21:19:47,267 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3740053050397878 [2022-12-05 21:19:47,267 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 671 flow. Second operand 29 states and 141 transitions. [2022-12-05 21:19:47,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 222 transitions, 2473 flow [2022-12-05 21:19:47,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 222 transitions, 1859 flow, removed 296 selfloop flow, removed 6 redundant places. [2022-12-05 21:19:47,285 INFO L231 Difference]: Finished difference. Result has 84 places, 156 transitions, 1473 flow [2022-12-05 21:19:47,285 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1473, PETRI_PLACES=84, PETRI_TRANSITIONS=156} [2022-12-05 21:19:47,286 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 66 predicate places. [2022-12-05 21:19:47,286 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 156 transitions, 1473 flow [2022-12-05 21:19:47,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:47,286 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:47,286 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:47,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 21:19:47,491 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 [2022-12-05 21:19:47,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash 294917994, now seen corresponding path program 4 times [2022-12-05 21:19:47,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:47,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315283311] [2022-12-05 21:19:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315283311] [2022-12-05 21:19:48,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315283311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411395298] [2022-12-05 21:19:48,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:19:48,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:48,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:48,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:48,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 21:19:48,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:19:48,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:19:48,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-05 21:19:48,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:48,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:49,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411395298] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:49,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:49,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-05 21:19:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146354326] [2022-12-05 21:19:49,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:49,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 21:19:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 21:19:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-12-05 21:19:49,093 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:49,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 156 transitions, 1473 flow. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:49,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:49,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:49,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:50,869 INFO L130 PetriNetUnfolder]: 660/1067 cut-off events. [2022-12-05 21:19:50,870 INFO L131 PetriNetUnfolder]: For 3971/3971 co-relation queries the response was YES. [2022-12-05 21:19:50,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5320 conditions, 1067 events. 660/1067 cut-off events. For 3971/3971 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4768 event pairs, 6 based on Foata normal form. 26/1077 useless extension candidates. Maximal degree in co-relation 5077. Up to 305 conditions per place. [2022-12-05 21:19:50,879 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 118 selfloop transitions, 266 changer transitions 18/402 dead transitions. [2022-12-05 21:19:50,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 402 transitions, 4185 flow [2022-12-05 21:19:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-05 21:19:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-05 21:19:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 173 transitions. [2022-12-05 21:19:50,882 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2022-12-05 21:19:50,882 INFO L175 Difference]: Start difference. First operand has 84 places, 156 transitions, 1473 flow. Second operand 33 states and 173 transitions. [2022-12-05 21:19:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 402 transitions, 4185 flow [2022-12-05 21:19:50,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 402 transitions, 3208 flow, removed 466 selfloop flow, removed 8 redundant places. [2022-12-05 21:19:50,940 INFO L231 Difference]: Finished difference. Result has 114 places, 316 transitions, 2899 flow [2022-12-05 21:19:50,941 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2899, PETRI_PLACES=114, PETRI_TRANSITIONS=316} [2022-12-05 21:19:50,941 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 96 predicate places. [2022-12-05 21:19:50,941 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 316 transitions, 2899 flow [2022-12-05 21:19:50,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:50,942 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:50,942 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:50,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 21:19:51,147 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 [2022-12-05 21:19:51,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash -361597168, now seen corresponding path program 5 times [2022-12-05 21:19:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:51,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827147537] [2022-12-05 21:19:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:51,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:51,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827147537] [2022-12-05 21:19:51,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827147537] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557171662] [2022-12-05 21:19:51,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:19:51,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:51,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:51,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:51,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 21:19:51,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-05 21:19:51,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:19:51,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-05 21:19:51,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:52,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:19:52,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557171662] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:52,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:52,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 14 [2022-12-05 21:19:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964645232] [2022-12-05 21:19:52,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:19:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:19:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:19:52,565 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:52,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 316 transitions, 2899 flow. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:52,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:52,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:52,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:54,446 INFO L130 PetriNetUnfolder]: 794/1335 cut-off events. [2022-12-05 21:19:54,446 INFO L131 PetriNetUnfolder]: For 2484/2484 co-relation queries the response was YES. [2022-12-05 21:19:54,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1335 events. 794/1335 cut-off events. For 2484/2484 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6540 event pairs, 6 based on Foata normal form. 4/1331 useless extension candidates. Maximal degree in co-relation 6380. Up to 505 conditions per place. [2022-12-05 21:19:54,457 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 203 selfloop transitions, 261 changer transitions 21/485 dead transitions. [2022-12-05 21:19:54,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 485 transitions, 4850 flow [2022-12-05 21:19:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-05 21:19:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-05 21:19:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 170 transitions. [2022-12-05 21:19:54,460 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.36324786324786323 [2022-12-05 21:19:54,460 INFO L175 Difference]: Start difference. First operand has 114 places, 316 transitions, 2899 flow. Second operand 36 states and 170 transitions. [2022-12-05 21:19:54,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 485 transitions, 4850 flow [2022-12-05 21:19:54,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 485 transitions, 4520 flow, removed 96 selfloop flow, removed 11 redundant places. [2022-12-05 21:19:54,502 INFO L231 Difference]: Finished difference. Result has 152 places, 389 transitions, 4255 flow [2022-12-05 21:19:54,503 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4255, PETRI_PLACES=152, PETRI_TRANSITIONS=389} [2022-12-05 21:19:54,504 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 134 predicate places. [2022-12-05 21:19:54,504 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 389 transitions, 4255 flow [2022-12-05 21:19:54,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:54,504 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:54,504 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:54,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 21:19:54,708 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 [2022-12-05 21:19:54,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -237633720, now seen corresponding path program 6 times [2022-12-05 21:19:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:54,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891121921] [2022-12-05 21:19:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:54,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:55,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891121921] [2022-12-05 21:19:55,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891121921] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077940012] [2022-12-05 21:19:55,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 21:19:55,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:55,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:55,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 21:19:55,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-05 21:19:55,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:19:55,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-05 21:19:55,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:55,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:55,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077940012] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:55,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:55,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-12-05 21:19:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543913952] [2022-12-05 21:19:55,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:55,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 21:19:55,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:55,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 21:19:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-12-05 21:19:55,902 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:55,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 389 transitions, 4255 flow. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:55,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:55,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:55,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:58,250 INFO L130 PetriNetUnfolder]: 2020/3362 cut-off events. [2022-12-05 21:19:58,252 INFO L131 PetriNetUnfolder]: For 11760/11760 co-relation queries the response was YES. [2022-12-05 21:19:58,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18512 conditions, 3362 events. 2020/3362 cut-off events. For 11760/11760 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 19485 event pairs, 20 based on Foata normal form. 75/3379 useless extension candidates. Maximal degree in co-relation 18327. Up to 733 conditions per place. [2022-12-05 21:19:58,288 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 263 selfloop transitions, 814 changer transitions 26/1103 dead transitions. [2022-12-05 21:19:58,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1103 transitions, 13333 flow [2022-12-05 21:19:58,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-05 21:19:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-05 21:19:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 233 transitions. [2022-12-05 21:19:58,292 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4480769230769231 [2022-12-05 21:19:58,292 INFO L175 Difference]: Start difference. First operand has 152 places, 389 transitions, 4255 flow. Second operand 40 states and 233 transitions. [2022-12-05 21:19:58,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1103 transitions, 13333 flow [2022-12-05 21:19:58,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 1103 transitions, 13152 flow, removed 83 selfloop flow, removed 7 redundant places. [2022-12-05 21:19:58,551 INFO L231 Difference]: Finished difference. Result has 208 places, 969 transitions, 13488 flow [2022-12-05 21:19:58,552 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=13488, PETRI_PLACES=208, PETRI_TRANSITIONS=969} [2022-12-05 21:19:58,553 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 190 predicate places. [2022-12-05 21:19:58,553 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 969 transitions, 13488 flow [2022-12-05 21:19:58,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:58,553 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:58,553 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:58,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 21:19:58,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:58,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:19:58,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash 429213031, now seen corresponding path program 7 times [2022-12-05 21:19:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:58,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933785131] [2022-12-05 21:19:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:19:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:59,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933785131] [2022-12-05 21:19:59,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933785131] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:19:59,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485431256] [2022-12-05 21:19:59,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 21:19:59,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:19:59,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:19:59,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:19:59,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 21:19:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:59,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-05 21:19:59,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:19:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:19:59,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:19:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:19:59,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485431256] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:19:59,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:19:59,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 12 [2022-12-05 21:19:59,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840939639] [2022-12-05 21:19:59,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:19:59,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 21:19:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:59,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 21:19:59,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-05 21:19:59,402 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:19:59,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 969 transitions, 13488 flow. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:59,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:59,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:19:59,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:20:00,241 INFO L130 PetriNetUnfolder]: 1790/3048 cut-off events. [2022-12-05 21:20:00,241 INFO L131 PetriNetUnfolder]: For 18228/18228 co-relation queries the response was YES. [2022-12-05 21:20:00,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19164 conditions, 3048 events. 1790/3048 cut-off events. For 18228/18228 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 17947 event pairs, 58 based on Foata normal form. 398/3434 useless extension candidates. Maximal degree in co-relation 19068. Up to 1242 conditions per place. [2022-12-05 21:20:00,271 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 394 selfloop transitions, 370 changer transitions 149/913 dead transitions. [2022-12-05 21:20:00,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 913 transitions, 13878 flow [2022-12-05 21:20:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:20:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:20:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2022-12-05 21:20:00,272 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2022-12-05 21:20:00,272 INFO L175 Difference]: Start difference. First operand has 208 places, 969 transitions, 13488 flow. Second operand 7 states and 36 transitions. [2022-12-05 21:20:00,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 913 transitions, 13878 flow [2022-12-05 21:20:00,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 913 transitions, 12647 flow, removed 209 selfloop flow, removed 11 redundant places. [2022-12-05 21:20:00,578 INFO L231 Difference]: Finished difference. Result has 196 places, 725 transitions, 9388 flow [2022-12-05 21:20:00,578 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=10016, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9388, PETRI_PLACES=196, PETRI_TRANSITIONS=725} [2022-12-05 21:20:00,579 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 178 predicate places. [2022-12-05 21:20:00,579 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 725 transitions, 9388 flow [2022-12-05 21:20:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:00,579 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:20:00,580 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:20:00,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 21:20:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:20:00,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:20:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:20:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1996653006, now seen corresponding path program 8 times [2022-12-05 21:20:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:20:00,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495347611] [2022-12-05 21:20:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:20:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:20:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:20:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:20:01,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:20:01,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495347611] [2022-12-05 21:20:01,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495347611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:20:01,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894119118] [2022-12-05 21:20:01,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:20:01,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:20:01,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:20:01,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:20:01,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 21:20:01,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:20:01,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:20:01,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-05 21:20:01,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:20:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:01,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:20:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:01,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894119118] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:20:01,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:20:01,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2022-12-05 21:20:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781825976] [2022-12-05 21:20:01,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:20:01,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:20:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:20:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:20:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:20:01,644 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:20:01,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 725 transitions, 9388 flow. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:01,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:20:01,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:20:01,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:20:02,401 INFO L130 PetriNetUnfolder]: 1253/2021 cut-off events. [2022-12-05 21:20:02,402 INFO L131 PetriNetUnfolder]: For 7109/7109 co-relation queries the response was YES. [2022-12-05 21:20:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12975 conditions, 2021 events. 1253/2021 cut-off events. For 7109/7109 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9947 event pairs, 40 based on Foata normal form. 170/2191 useless extension candidates. Maximal degree in co-relation 12923. Up to 551 conditions per place. [2022-12-05 21:20:02,421 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 225 selfloop transitions, 399 changer transitions 95/719 dead transitions. [2022-12-05 21:20:02,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 719 transitions, 10441 flow [2022-12-05 21:20:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 21:20:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 21:20:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 54 transitions. [2022-12-05 21:20:02,422 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2967032967032967 [2022-12-05 21:20:02,422 INFO L175 Difference]: Start difference. First operand has 196 places, 725 transitions, 9388 flow. Second operand 14 states and 54 transitions. [2022-12-05 21:20:02,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 719 transitions, 10441 flow [2022-12-05 21:20:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 719 transitions, 9683 flow, removed 96 selfloop flow, removed 20 redundant places. [2022-12-05 21:20:02,547 INFO L231 Difference]: Finished difference. Result has 171 places, 599 transitions, 7766 flow [2022-12-05 21:20:02,548 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=7380, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7766, PETRI_PLACES=171, PETRI_TRANSITIONS=599} [2022-12-05 21:20:02,548 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 153 predicate places. [2022-12-05 21:20:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 599 transitions, 7766 flow [2022-12-05 21:20:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:02,549 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:20:02,549 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:20:02,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 21:20:02,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 21:20:02,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:20:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:20:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1792576912, now seen corresponding path program 9 times [2022-12-05 21:20:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:20:02,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677473547] [2022-12-05 21:20:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:20:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:20:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:20:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:20:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677473547] [2022-12-05 21:20:03,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677473547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:20:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521268445] [2022-12-05 21:20:03,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:20:03,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:20:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:20:03,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:20:03,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 21:20:03,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-05 21:20:03,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:20:03,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-05 21:20:03,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:20:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:04,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:20:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:04,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521268445] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:20:04,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:20:04,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-05 21:20:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838746269] [2022-12-05 21:20:04,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:20:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-05 21:20:04,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:20:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-05 21:20:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-12-05 21:20:04,747 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:20:04,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 599 transitions, 7766 flow. Second operand has 22 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:04,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:20:04,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:20:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:20:06,114 INFO L130 PetriNetUnfolder]: 1523/2432 cut-off events. [2022-12-05 21:20:06,114 INFO L131 PetriNetUnfolder]: For 7533/7533 co-relation queries the response was YES. [2022-12-05 21:20:06,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 2432 events. 1523/2432 cut-off events. For 7533/7533 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 12362 event pairs, 32 based on Foata normal form. 2/2434 useless extension candidates. Maximal degree in co-relation 15621. Up to 639 conditions per place. [2022-12-05 21:20:06,137 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 228 selfloop transitions, 653 changer transitions 9/890 dead transitions. [2022-12-05 21:20:06,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 890 transitions, 12971 flow [2022-12-05 21:20:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 21:20:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 21:20:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 112 transitions. [2022-12-05 21:20:06,139 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3190883190883191 [2022-12-05 21:20:06,139 INFO L175 Difference]: Start difference. First operand has 171 places, 599 transitions, 7766 flow. Second operand 27 states and 112 transitions. [2022-12-05 21:20:06,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 890 transitions, 12971 flow [2022-12-05 21:20:06,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 890 transitions, 12565 flow, removed 81 selfloop flow, removed 10 redundant places. [2022-12-05 21:20:06,320 INFO L231 Difference]: Finished difference. Result has 189 places, 846 transitions, 13075 flow [2022-12-05 21:20:06,321 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=7501, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=13075, PETRI_PLACES=189, PETRI_TRANSITIONS=846} [2022-12-05 21:20:06,322 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 171 predicate places. [2022-12-05 21:20:06,322 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 846 transitions, 13075 flow [2022-12-05 21:20:06,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:06,322 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:20:06,322 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:20:06,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-05 21:20:06,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:20:06,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:20:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:20:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 78769584, now seen corresponding path program 10 times [2022-12-05 21:20:06,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:20:06,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543562627] [2022-12-05 21:20:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:20:06,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:20:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:20:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:07,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:20:07,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543562627] [2022-12-05 21:20:07,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543562627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:20:07,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059546767] [2022-12-05 21:20:07,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:20:07,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:20:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:20:07,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:20:07,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 21:20:07,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:20:07,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:20:07,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-05 21:20:07,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:20:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:07,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:20:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:20:08,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059546767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:20:08,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:20:08,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 21 [2022-12-05 21:20:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18751610] [2022-12-05 21:20:08,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:20:08,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 21:20:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:20:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 21:20:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-12-05 21:20:08,282 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:20:08,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 846 transitions, 13075 flow. Second operand has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:08,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:20:08,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:20:08,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:20:10,053 INFO L130 PetriNetUnfolder]: 1790/2878 cut-off events. [2022-12-05 21:20:10,053 INFO L131 PetriNetUnfolder]: For 11768/11768 co-relation queries the response was YES. [2022-12-05 21:20:10,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20889 conditions, 2878 events. 1790/2878 cut-off events. For 11768/11768 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15447 event pairs, 20 based on Foata normal form. 6/2884 useless extension candidates. Maximal degree in co-relation 20840. Up to 751 conditions per place. [2022-12-05 21:20:10,076 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 64 selfloop transitions, 777 changer transitions 205/1046 dead transitions. [2022-12-05 21:20:10,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1046 transitions, 17631 flow [2022-12-05 21:20:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 21:20:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 21:20:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 111 transitions. [2022-12-05 21:20:10,078 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.32840236686390534 [2022-12-05 21:20:10,078 INFO L175 Difference]: Start difference. First operand has 189 places, 846 transitions, 13075 flow. Second operand 26 states and 111 transitions. [2022-12-05 21:20:10,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 1046 transitions, 17631 flow [2022-12-05 21:20:10,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1046 transitions, 17382 flow, removed 88 selfloop flow, removed 4 redundant places. [2022-12-05 21:20:10,320 INFO L231 Difference]: Finished difference. Result has 213 places, 814 transitions, 13702 flow [2022-12-05 21:20:10,321 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=12846, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13702, PETRI_PLACES=213, PETRI_TRANSITIONS=814} [2022-12-05 21:20:10,321 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 195 predicate places. [2022-12-05 21:20:10,322 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 814 transitions, 13702 flow [2022-12-05 21:20:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:10,322 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:20:10,322 INFO L213 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:20:10,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-05 21:20:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-05 21:20:10,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:20:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:20:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash -65234292, now seen corresponding path program 11 times [2022-12-05 21:20:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:20:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488209844] [2022-12-05 21:20:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:20:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:20:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:20:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:11,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:20:11,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488209844] [2022-12-05 21:20:11,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488209844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:20:11,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691314456] [2022-12-05 21:20:11,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:20:11,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:20:11,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:20:11,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:20:11,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 21:20:11,693 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-05 21:20:11,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:20:11,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-05 21:20:11,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:20:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:20:12,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:20:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:20:13,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691314456] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:20:13,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:20:13,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2022-12-05 21:20:13,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190642761] [2022-12-05 21:20:13,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:20:13,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-05 21:20:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:20:13,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-05 21:20:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-12-05 21:20:13,211 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 21:20:13,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 814 transitions, 13702 flow. Second operand has 25 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:13,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:20:13,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 21:20:13,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:20:14,218 INFO L130 PetriNetUnfolder]: 1358/2220 cut-off events. [2022-12-05 21:20:14,219 INFO L131 PetriNetUnfolder]: For 7946/7946 co-relation queries the response was YES. [2022-12-05 21:20:14,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17723 conditions, 2220 events. 1358/2220 cut-off events. For 7946/7946 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11723 event pairs, 6 based on Foata normal form. 4/2224 useless extension candidates. Maximal degree in co-relation 17670. Up to 771 conditions per place. [2022-12-05 21:20:14,231 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 0 selfloop transitions, 0 changer transitions 865/865 dead transitions. [2022-12-05 21:20:14,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 865 transitions, 16090 flow [2022-12-05 21:20:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:20:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:20:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 48 transitions. [2022-12-05 21:20:14,242 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2022-12-05 21:20:14,242 INFO L175 Difference]: Start difference. First operand has 213 places, 814 transitions, 13702 flow. Second operand 12 states and 48 transitions. [2022-12-05 21:20:14,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 865 transitions, 16090 flow [2022-12-05 21:20:14,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 865 transitions, 14990 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-12-05 21:20:14,453 INFO L231 Difference]: Finished difference. Result has 200 places, 0 transitions, 0 flow [2022-12-05 21:20:14,453 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=12645, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=200, PETRI_TRANSITIONS=0} [2022-12-05 21:20:14,454 INFO L294 CegarLoopForPetriNet]: 18 programPoint places, 182 predicate places. [2022-12-05 21:20:14,454 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 0 transitions, 0 flow [2022-12-05 21:20:14,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:14,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 21:20:14,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 21:20:14,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 21:20:14,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-05 21:20:14,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-05 21:20:14,657 INFO L458 BasicCegarLoop]: Path program histogram: [11, 1, 1] [2022-12-05 21:20:14,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:20:14,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:20:14,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:20:14 BasicIcfg [2022-12-05 21:20:14,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:20:14,663 INFO L158 Benchmark]: Toolchain (without parser) took 38948.54ms. Allocated memory was 228.6MB in the beginning and 638.6MB in the end (delta: 410.0MB). Free memory was 204.9MB in the beginning and 307.4MB in the end (delta: -102.5MB). Peak memory consumption was 308.6MB. Max. memory is 8.0GB. [2022-12-05 21:20:14,663 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 228.6MB. Free memory was 205.6MB in the beginning and 205.6MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:20:14,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.98ms. Allocated memory is still 228.6MB. Free memory was 204.9MB in the beginning and 192.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-05 21:20:14,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.78ms. Allocated memory is still 228.6MB. Free memory was 192.9MB in the beginning and 191.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:20:14,664 INFO L158 Benchmark]: Boogie Preprocessor took 38.37ms. Allocated memory is still 228.6MB. Free memory was 191.3MB in the beginning and 190.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 21:20:14,664 INFO L158 Benchmark]: RCFGBuilder took 421.09ms. Allocated memory is still 228.6MB. Free memory was 189.7MB in the beginning and 175.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 21:20:14,664 INFO L158 Benchmark]: TraceAbstraction took 38218.00ms. Allocated memory was 228.6MB in the beginning and 638.6MB in the end (delta: 410.0MB). Free memory was 175.0MB in the beginning and 307.4MB in the end (delta: -132.4MB). Peak memory consumption was 279.2MB. Max. memory is 8.0GB. [2022-12-05 21:20:14,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 228.6MB. Free memory was 205.6MB in the beginning and 205.6MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.98ms. Allocated memory is still 228.6MB. Free memory was 204.9MB in the beginning and 192.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.78ms. Allocated memory is still 228.6MB. Free memory was 192.9MB in the beginning and 191.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.37ms. Allocated memory is still 228.6MB. Free memory was 191.3MB in the beginning and 190.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 421.09ms. Allocated memory is still 228.6MB. Free memory was 189.7MB in the beginning and 175.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 38218.00ms. Allocated memory was 228.6MB in the beginning and 638.6MB in the end (delta: 410.0MB). Free memory was 175.0MB in the beginning and 307.4MB in the end (delta: -132.4MB). Peak memory consumption was 279.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 76 PlacesBefore, 18 PlacesAfterwards, 80 TransitionsBefore, 13 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 29 ConcurrentYvCompositions, 7 ChoiceCompositions, 65 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 592, independent: 592, independent conditional: 592, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 592, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 592, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 592, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 499, independent: 499, independent conditional: 0, independent unconditional: 499, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 499, independent: 497, independent conditional: 0, independent unconditional: 497, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 592, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 499, unknown conditional: 0, unknown unconditional: 499] , Statistics on independence cache: Total cache size (in pairs): 901, Positive cache size: 901, Positive conditional cache size: 0, Positive unconditional cache size: 901, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 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: 38.1s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1521 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1521 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 613 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3740 IncrementalHoareTripleChecker+Invalid, 4353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 613 mSolverCounterUnsat, 0 mSDtfsCounter, 3740 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 200 SyntacticMatches, 25 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13702occurred in iteration=12, InterpolantAutomatonStates: 261, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 7579 SizeOfPredicates, 107 NumberOfNonLiveVariables, 1314 ConjunctsInSsa, 211 ConjunctsInUnsatCore, 35 InterpolantComputations, 2 PerfectInterpolantSequences, 27/301 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 21:20:14,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...