/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:33:29,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:33:29,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:33:29,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:33:29,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:33:29,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:33:29,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:33:29,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:33:29,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:33:29,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:33:29,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:33:29,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:33:29,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:33:29,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:33:29,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:33:29,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:33:29,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:33:29,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:33:29,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:33:29,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:33:29,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:33:29,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:33:29,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:33:29,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:33:29,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:33:29,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:33:29,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:33:29,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:33:29,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:33:29,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:33:29,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:33:29,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:33:29,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:33:29,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:33:29,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:33:29,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:33:29,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:33:29,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:33:29,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:33:29,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:33:29,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:33:29,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:33:29,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:33:29,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:33:29,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:33:29,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:33:29,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:33:29,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:33:29,842 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:33:29,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:33:29,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:33:29,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:33:29,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:33:29,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:33:29,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:33:29,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:33:29,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:33:29,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:33:29,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:33:29,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:33:29,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:33:29,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:33:29,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:33:29,845 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:33:29,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:33:29,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:33:30,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:33:30,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:33:30,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:33:30,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:33:30,043 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:33:30,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2022-09-20 22:33:30,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2466a3af9/1dd617d204a84b4c8338fff21ad06c72/FLAGf423a5efb [2022-09-20 22:33:30,531 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:33:30,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2022-09-20 22:33:30,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2466a3af9/1dd617d204a84b4c8338fff21ad06c72/FLAGf423a5efb [2022-09-20 22:33:30,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2466a3af9/1dd617d204a84b4c8338fff21ad06c72 [2022-09-20 22:33:30,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:33:30,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:33:30,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:33:30,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:33:30,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:33:30,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23303497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30, skipping insertion in model container [2022-09-20 22:33:30,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:33:30,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:33:30,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2022-09-20 22:33:30,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:33:30,817 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:33:30,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2022-09-20 22:33:30,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:33:30,866 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:33:30,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30 WrapperNode [2022-09-20 22:33:30,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:33:30,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:33:30,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:33:30,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:33:30,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,899 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-09-20 22:33:30,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:33:30,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:33:30,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:33:30,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:33:30,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:33:30,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:33:30,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:33:30,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:33:30,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (1/1) ... [2022-09-20 22:33:30,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:33:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:33:30,989 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) [2022-09-20 22:33:31,005 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 [2022-09-20 22:33:31,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 22:33:31,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 22:33:31,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 22:33:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 22:33:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 22:33:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:33:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 22:33:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:33:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:33:31,031 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:33:31,171 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:33:31,172 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:33:31,331 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:33:31,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:33:31,336 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:33:31,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:33:31 BoogieIcfgContainer [2022-09-20 22:33:31,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:33:31,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:33:31,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:33:31,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:33:31,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:33:30" (1/3) ... [2022-09-20 22:33:31,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78304219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:33:31, skipping insertion in model container [2022-09-20 22:33:31,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:33:30" (2/3) ... [2022-09-20 22:33:31,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78304219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:33:31, skipping insertion in model container [2022-09-20 22:33:31,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:33:31" (3/3) ... [2022-09-20 22:33:31,346 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2022-09-20 22:33:31,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:33:31,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:33:31,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:33:31,412 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:33:31,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 22:33:31,514 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-09-20 22:33:31,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:33:31,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-09-20 22:33:31,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 22:33:31,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-09-20 22:33:31,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:33:31,542 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;@7ddf6dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:33:31,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 22:33:31,568 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-20 22:33:31,569 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:33:31,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:31,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:31,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1426205310, now seen corresponding path program 1 times [2022-09-20 22:33:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:31,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040432852] [2022-09-20 22:33:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:31,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:31,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040432852] [2022-09-20 22:33:31,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040432852] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:31,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:31,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:33:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056415235] [2022-09-20 22:33:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:31,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:33:31,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:31,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:33:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:33:31,980 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:33:31,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-09-20 22:33:31,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:31,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:33:31,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:32,313 INFO L130 PetriNetUnfolder]: 192/531 cut-off events. [2022-09-20 22:33:32,313 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-09-20 22:33:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 531 events. 192/531 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2641 event pairs, 18 based on Foata normal form. 27/530 useless extension candidates. Maximal degree in co-relation 864. Up to 68 conditions per place. [2022-09-20 22:33:32,321 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 21 selfloop transitions, 5 changer transitions 42/124 dead transitions. [2022-09-20 22:33:32,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 124 transitions, 393 flow [2022-09-20 22:33:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:33:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:33:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 984 transitions. [2022-09-20 22:33:32,340 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.822742474916388 [2022-09-20 22:33:32,341 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 984 transitions. [2022-09-20 22:33:32,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 984 transitions. [2022-09-20 22:33:32,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:32,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 984 transitions. [2022-09-20 22:33:32,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.6923076923077) internal successors, (984), 13 states have internal predecessors, (984), 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) [2022-09-20 22:33:32,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-09-20 22:33:32,364 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-09-20 22:33:32,365 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 984 transitions. [2022-09-20 22:33:32,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 124 transitions, 393 flow [2022-09-20 22:33:32,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:33:32,370 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 226 flow [2022-09-20 22:33:32,371 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2022-09-20 22:33:32,376 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-09-20 22:33:32,376 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 226 flow [2022-09-20 22:33:32,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-09-20 22:33:32,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:32,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:32,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:33:32,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2016124930, now seen corresponding path program 1 times [2022-09-20 22:33:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419094013] [2022-09-20 22:33:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:32,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:32,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419094013] [2022-09-20 22:33:32,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419094013] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:32,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:32,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:33:32,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612452832] [2022-09-20 22:33:32,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:32,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:33:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:33:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:33:32,520 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:33:32,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2022-09-20 22:33:32,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:32,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:33:32,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:32,700 INFO L130 PetriNetUnfolder]: 401/951 cut-off events. [2022-09-20 22:33:32,702 INFO L131 PetriNetUnfolder]: For 274/297 co-relation queries the response was YES. [2022-09-20 22:33:32,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 951 events. 401/951 cut-off events. For 274/297 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6125 event pairs, 4 based on Foata normal form. 10/843 useless extension candidates. Maximal degree in co-relation 1842. Up to 257 conditions per place. [2022-09-20 22:33:32,710 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 15 changer transitions 6/109 dead transitions. [2022-09-20 22:33:32,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 386 flow [2022-09-20 22:33:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:33:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:33:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-09-20 22:33:32,713 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-09-20 22:33:32,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-09-20 22:33:32,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-09-20 22:33:32,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:32,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-09-20 22:33:32,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 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) [2022-09-20 22:33:32,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-09-20 22:33:32,717 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2022-09-20 22:33:32,718 INFO L175 Difference]: Start difference. First operand has 105 places, 77 transitions, 226 flow. Second operand 10 states and 798 transitions. [2022-09-20 22:33:32,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 386 flow [2022-09-20 22:33:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 366 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-09-20 22:33:32,725 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 315 flow [2022-09-20 22:33:32,726 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=315, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2022-09-20 22:33:32,726 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2022-09-20 22:33:32,726 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 315 flow [2022-09-20 22:33:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2022-09-20 22:33:32,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:32,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:32,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:33:32,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1587355821, now seen corresponding path program 1 times [2022-09-20 22:33:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:32,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474558021] [2022-09-20 22:33:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:32,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474558021] [2022-09-20 22:33:32,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474558021] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:32,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:32,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:33:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162548188] [2022-09-20 22:33:32,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:32,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:33:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:33:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:33:32,881 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:33:32,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-09-20 22:33:32,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:32,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:33:32,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:33,091 INFO L130 PetriNetUnfolder]: 381/922 cut-off events. [2022-09-20 22:33:33,091 INFO L131 PetriNetUnfolder]: For 2309/2559 co-relation queries the response was YES. [2022-09-20 22:33:33,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3222 conditions, 922 events. 381/922 cut-off events. For 2309/2559 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6012 event pairs, 0 based on Foata normal form. 66/903 useless extension candidates. Maximal degree in co-relation 3171. Up to 405 conditions per place. [2022-09-20 22:33:33,097 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 28 changer transitions 13/128 dead transitions. [2022-09-20 22:33:33,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 128 transitions, 681 flow [2022-09-20 22:33:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:33:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:33:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-09-20 22:33:33,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-09-20 22:33:33,100 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-09-20 22:33:33,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-09-20 22:33:33,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:33,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-09-20 22:33:33,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 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) [2022-09-20 22:33:33,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-09-20 22:33:33,105 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-09-20 22:33:33,105 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 315 flow. Second operand 13 states and 1036 transitions. [2022-09-20 22:33:33,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 128 transitions, 681 flow [2022-09-20 22:33:33,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 673 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-20 22:33:33,115 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 533 flow [2022-09-20 22:33:33,115 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=533, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2022-09-20 22:33:33,117 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2022-09-20 22:33:33,117 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 533 flow [2022-09-20 22:33:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-09-20 22:33:33,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:33,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:33:33,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash -967091996, now seen corresponding path program 1 times [2022-09-20 22:33:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:33,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938310115] [2022-09-20 22:33:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938310115] [2022-09-20 22:33:33,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938310115] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:33,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:33,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:33:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498181765] [2022-09-20 22:33:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:33:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:33:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:33:33,256 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:33:33,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 533 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:33:33,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:33,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:33:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:33,591 INFO L130 PetriNetUnfolder]: 399/2048 cut-off events. [2022-09-20 22:33:33,591 INFO L131 PetriNetUnfolder]: For 5308/5490 co-relation queries the response was YES. [2022-09-20 22:33:33,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 2048 events. 399/2048 cut-off events. For 5308/5490 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21598 event pairs, 13 based on Foata normal form. 21/1973 useless extension candidates. Maximal degree in co-relation 6585. Up to 498 conditions per place. [2022-09-20 22:33:33,603 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 32 selfloop transitions, 11 changer transitions 15/144 dead transitions. [2022-09-20 22:33:33,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 144 transitions, 818 flow [2022-09-20 22:33:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:33:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:33:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 683 transitions. [2022-09-20 22:33:33,605 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8248792270531401 [2022-09-20 22:33:33,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 683 transitions. [2022-09-20 22:33:33,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 683 transitions. [2022-09-20 22:33:33,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:33,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 683 transitions. [2022-09-20 22:33:33,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.88888888888889) internal successors, (683), 9 states have internal predecessors, (683), 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) [2022-09-20 22:33:33,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-09-20 22:33:33,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-09-20 22:33:33,608 INFO L175 Difference]: Start difference. First operand has 121 places, 107 transitions, 533 flow. Second operand 9 states and 683 transitions. [2022-09-20 22:33:33,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 144 transitions, 818 flow [2022-09-20 22:33:33,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 144 transitions, 758 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-09-20 22:33:33,668 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 571 flow [2022-09-20 22:33:33,669 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=571, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2022-09-20 22:33:33,670 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 49 predicate places. [2022-09-20 22:33:33,670 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 571 flow [2022-09-20 22:33:33,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:33:33,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:33,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:33:33,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash -791942108, now seen corresponding path program 2 times [2022-09-20 22:33:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:33,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279123646] [2022-09-20 22:33:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279123646] [2022-09-20 22:33:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279123646] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:33,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:33,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:33:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493523540] [2022-09-20 22:33:33,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:33,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:33:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:33:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:33:33,769 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:33:33,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 571 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2022-09-20 22:33:33,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:33,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:33:33,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:33,947 INFO L130 PetriNetUnfolder]: 272/1407 cut-off events. [2022-09-20 22:33:33,948 INFO L131 PetriNetUnfolder]: For 2550/2625 co-relation queries the response was YES. [2022-09-20 22:33:33,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 1407 events. 272/1407 cut-off events. For 2550/2625 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13556 event pairs, 9 based on Foata normal form. 16/1366 useless extension candidates. Maximal degree in co-relation 4008. Up to 175 conditions per place. [2022-09-20 22:33:33,958 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 20 selfloop transitions, 5 changer transitions 17/128 dead transitions. [2022-09-20 22:33:33,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 751 flow [2022-09-20 22:33:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:33:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:33:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 528 transitions. [2022-09-20 22:33:33,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8198757763975155 [2022-09-20 22:33:33,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 528 transitions. [2022-09-20 22:33:33,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 528 transitions. [2022-09-20 22:33:33,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:33,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 528 transitions. [2022-09-20 22:33:33,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 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) [2022-09-20 22:33:33,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-09-20 22:33:33,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-09-20 22:33:33,962 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 571 flow. Second operand 7 states and 528 transitions. [2022-09-20 22:33:33,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 751 flow [2022-09-20 22:33:33,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 731 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-09-20 22:33:33,978 INFO L231 Difference]: Finished difference. Result has 135 places, 106 transitions, 521 flow [2022-09-20 22:33:33,978 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=135, PETRI_TRANSITIONS=106} [2022-09-20 22:33:33,978 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 51 predicate places. [2022-09-20 22:33:33,978 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 106 transitions, 521 flow [2022-09-20 22:33:33,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2022-09-20 22:33:33,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:33,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:33,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:33:33,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash -521608600, now seen corresponding path program 3 times [2022-09-20 22:33:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:33,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868862359] [2022-09-20 22:33:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:33,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:34,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868862359] [2022-09-20 22:33:34,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868862359] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:34,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:34,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:33:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707578523] [2022-09-20 22:33:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:34,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:33:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:33:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:33:34,045 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:33:34,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 106 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2022-09-20 22:33:34,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:34,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:33:34,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:34,260 INFO L130 PetriNetUnfolder]: 176/596 cut-off events. [2022-09-20 22:33:34,260 INFO L131 PetriNetUnfolder]: For 1772/2087 co-relation queries the response was YES. [2022-09-20 22:33:34,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 596 events. 176/596 cut-off events. For 1772/2087 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4268 event pairs, 1 based on Foata normal form. 66/625 useless extension candidates. Maximal degree in co-relation 2135. Up to 94 conditions per place. [2022-09-20 22:33:34,265 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 32 changer transitions 19/133 dead transitions. [2022-09-20 22:33:34,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 841 flow [2022-09-20 22:33:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:33:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:33:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1256 transitions. [2022-09-20 22:33:34,268 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8532608695652174 [2022-09-20 22:33:34,268 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1256 transitions. [2022-09-20 22:33:34,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1256 transitions. [2022-09-20 22:33:34,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:34,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1256 transitions. [2022-09-20 22:33:34,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 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) [2022-09-20 22:33:34,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2022-09-20 22:33:34,273 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2022-09-20 22:33:34,273 INFO L175 Difference]: Start difference. First operand has 135 places, 106 transitions, 521 flow. Second operand 16 states and 1256 transitions. [2022-09-20 22:33:34,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 841 flow [2022-09-20 22:33:34,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 133 transitions, 788 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-09-20 22:33:34,281 INFO L231 Difference]: Finished difference. Result has 139 places, 107 transitions, 574 flow [2022-09-20 22:33:34,281 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=574, PETRI_PLACES=139, PETRI_TRANSITIONS=107} [2022-09-20 22:33:34,282 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 55 predicate places. [2022-09-20 22:33:34,282 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 107 transitions, 574 flow [2022-09-20 22:33:34,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2022-09-20 22:33:34,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:34,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:34,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:33:34,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1395002608, now seen corresponding path program 1 times [2022-09-20 22:33:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:34,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176167779] [2022-09-20 22:33:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:34,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:34,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176167779] [2022-09-20 22:33:34,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176167779] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:34,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:34,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:33:34,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109642511] [2022-09-20 22:33:34,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:34,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:33:34,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:34,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:33:34,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:33:34,341 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-09-20 22:33:34,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 107 transitions, 574 flow. Second operand has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2022-09-20 22:33:34,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:34,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-09-20 22:33:34,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:34,449 INFO L130 PetriNetUnfolder]: 121/650 cut-off events. [2022-09-20 22:33:34,449 INFO L131 PetriNetUnfolder]: For 2046/2116 co-relation queries the response was YES. [2022-09-20 22:33:34,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 650 events. 121/650 cut-off events. For 2046/2116 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5282 event pairs, 1 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 2085. Up to 93 conditions per place. [2022-09-20 22:33:34,453 INFO L137 encePairwiseOnDemand]: 85/92 looper letters, 15 selfloop transitions, 4 changer transitions 4/114 dead transitions. [2022-09-20 22:33:34,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 114 transitions, 654 flow [2022-09-20 22:33:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:33:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:33:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-09-20 22:33:34,455 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8247282608695652 [2022-09-20 22:33:34,455 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-09-20 22:33:34,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-09-20 22:33:34,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:34,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-09-20 22:33:34,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 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) [2022-09-20 22:33:34,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2022-09-20 22:33:34,458 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2022-09-20 22:33:34,458 INFO L175 Difference]: Start difference. First operand has 139 places, 107 transitions, 574 flow. Second operand 8 states and 607 transitions. [2022-09-20 22:33:34,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 114 transitions, 654 flow [2022-09-20 22:33:34,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 114 transitions, 557 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-09-20 22:33:34,469 INFO L231 Difference]: Finished difference. Result has 133 places, 109 transitions, 515 flow [2022-09-20 22:33:34,469 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=515, PETRI_PLACES=133, PETRI_TRANSITIONS=109} [2022-09-20 22:33:34,470 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 49 predicate places. [2022-09-20 22:33:34,470 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 109 transitions, 515 flow [2022-09-20 22:33:34,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2022-09-20 22:33:34,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:33:34,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:33:34,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:33:34,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:33:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:33:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1980006204, now seen corresponding path program 2 times [2022-09-20 22:33:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:33:34,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174874901] [2022-09-20 22:33:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:33:34,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:33:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:33:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:33:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:33:34,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174874901] [2022-09-20 22:33:34,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174874901] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:33:34,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:33:34,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:33:34,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668833787] [2022-09-20 22:33:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:33:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:33:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:33:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:33:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:33:34,540 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-09-20 22:33:34,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 109 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2022-09-20 22:33:34,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:33:34,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-09-20 22:33:34,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:33:34,673 INFO L130 PetriNetUnfolder]: 133/700 cut-off events. [2022-09-20 22:33:34,673 INFO L131 PetriNetUnfolder]: For 1046/1059 co-relation queries the response was YES. [2022-09-20 22:33:34,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 700 events. 133/700 cut-off events. For 1046/1059 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5882 event pairs, 0 based on Foata normal form. 1/666 useless extension candidates. Maximal degree in co-relation 1925. Up to 84 conditions per place. [2022-09-20 22:33:34,677 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-09-20 22:33:34,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 114 transitions, 612 flow [2022-09-20 22:33:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:33:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:33:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 572 transitions. [2022-09-20 22:33:34,678 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7771739130434783 [2022-09-20 22:33:34,678 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 572 transitions. [2022-09-20 22:33:34,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 572 transitions. [2022-09-20 22:33:34,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:33:34,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 572 transitions. [2022-09-20 22:33:34,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 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) [2022-09-20 22:33:34,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2022-09-20 22:33:34,681 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2022-09-20 22:33:34,681 INFO L175 Difference]: Start difference. First operand has 133 places, 109 transitions, 515 flow. Second operand 8 states and 572 transitions. [2022-09-20 22:33:34,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 114 transitions, 612 flow [2022-09-20 22:33:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 114 transitions, 597 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-20 22:33:34,688 INFO L231 Difference]: Finished difference. Result has 131 places, 0 transitions, 0 flow [2022-09-20 22:33:34,688 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=131, PETRI_TRANSITIONS=0} [2022-09-20 22:33:34,688 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 47 predicate places. [2022-09-20 22:33:34,688 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 0 transitions, 0 flow [2022-09-20 22:33:34,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2022-09-20 22:33:34,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 22:33:34,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 22:33:34,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 22:33:34,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 22:33:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:33:34,691 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-09-20 22:33:34,693 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:33:34,693 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:33:34,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:33:34 BasicIcfg [2022-09-20 22:33:34,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:33:34,697 INFO L158 Benchmark]: Toolchain (without parser) took 4132.74ms. Allocated memory was 221.2MB in the beginning and 440.4MB in the end (delta: 219.2MB). Free memory was 191.6MB in the beginning and 238.0MB in the end (delta: -46.4MB). Peak memory consumption was 172.7MB. Max. memory is 8.0GB. [2022-09-20 22:33:34,698 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 221.2MB. Free memory is still 178.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:33:34,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.83ms. Allocated memory was 221.2MB in the beginning and 288.4MB in the end (delta: 67.1MB). Free memory was 191.5MB in the beginning and 244.6MB in the end (delta: -53.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-20 22:33:34,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.11ms. Allocated memory is still 288.4MB. Free memory was 244.6MB in the beginning and 242.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:33:34,698 INFO L158 Benchmark]: Boogie Preprocessor took 29.45ms. Allocated memory is still 288.4MB. Free memory was 242.6MB in the beginning and 241.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:33:34,699 INFO L158 Benchmark]: RCFGBuilder took 407.28ms. Allocated memory is still 288.4MB. Free memory was 241.2MB in the beginning and 228.2MB in the end (delta: 12.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 22:33:34,699 INFO L158 Benchmark]: TraceAbstraction took 3357.41ms. Allocated memory was 288.4MB in the beginning and 440.4MB in the end (delta: 152.0MB). Free memory was 227.6MB in the beginning and 238.0MB in the end (delta: -10.4MB). Peak memory consumption was 142.7MB. Max. memory is 8.0GB. [2022-09-20 22:33:34,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 221.2MB. Free memory is still 178.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.83ms. Allocated memory was 221.2MB in the beginning and 288.4MB in the end (delta: 67.1MB). Free memory was 191.5MB in the beginning and 244.6MB in the end (delta: -53.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.11ms. Allocated memory is still 288.4MB. Free memory was 244.6MB in the beginning and 242.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.45ms. Allocated memory is still 288.4MB. Free memory was 242.6MB in the beginning and 241.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 407.28ms. Allocated memory is still 288.4MB. Free memory was 241.2MB in the beginning and 228.2MB in the end (delta: 12.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3357.41ms. Allocated memory was 288.4MB in the beginning and 440.4MB in the end (delta: 152.0MB). Free memory was 227.6MB in the beginning and 238.0MB in the end (delta: -10.4MB). Peak memory consumption was 142.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 491 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 573 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 101 mSDtfsCounter, 573 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=574occurred in iteration=6, InterpolantAutomatonStates: 84, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 491 ConstructedInterpolants, 0 QuantifiedInterpolants, 2157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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! [2022-09-20 22:33:34,737 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...